Property:Phenology

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Crataegus frugiferens +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus furtiva +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus gattingeri +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus gaylussacia +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus gilva +
Flowering Mar–Apr  +, fruiting Sep–Oct.  +
Crataegus greggiana +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus harbisonii +
Flowering early May  +, fruiting Sep–Nov.  +
Crataegus holmesiana +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ignava +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus incilis +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus integra +
Flowering mid Mar–mid Apr  +, fruiting Jul–Aug.  +
Crataegus intricata +
Flowering late Apr, early Jun  +, fruiting Sep–Oct.  +
Crataegus invicta +
Flowering Mar–early Apr  +, fruiting Jul–Aug.  +
Crataegus iracunda +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus irrasa +
Flowering May–Jun  +, fruiting Sep.  +
Crataegus jesupii +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus jonesiae +
Flowering Jun  +, fruiting Sep–Oct.  +
Crataegus lacrimata +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus laevigata +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus lanata +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus lancei +
Flowering Apr–Sep  +, fruiting Aug–Sep.  +
Crataegus lanuginosa +
Flowering late Apr  +, fruiting late Oct.  +
Crataegus lassa +
Flowering Mar–mid Apr  +, fruiting Jul–Aug.  +
Crataegus laurentiana +
Flowering Jun  +, fruiting Sep–Oct.  +
Crataegus leonensis +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus lepida +
Flowering Apr–May  +, fruiting Jul–Aug.  +
Crataegus levis +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus lumaria +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus macracantha +
Flowering Apr–Jun  +, fruiting Sep–Oct.  +
Crataegus macrosperma +
Flowering Apr–Jun  +, fruiting Sep–Nov.  +
Crataegus magniflora +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus margarettae var. angustifolia +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus margarettae var. brownii +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus margarettae var. margarettae +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus margarettae var. meiophylla +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus marshallii +
Flowering Mar–Apr  +, fruiting Sep–Nov.  +
Crataegus mendosa +
Flowering Mar–Apr  +, fruiting Sep–Nov.  +
Crataegus meridiana +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus mira +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus mollis var. dumetosa +
Flowering Mar–Apr  +, fruiting Sep–Oct.  +
Crataegus mollis var. incisifolia +
Flowering Mar–May  +, fruiting Sep–Nov.  +
Crataegus mollis var. meridionalis +
Flowering Mar–Apr  +, fruiting Sep–Oct.  +
Crataegus mollis var. mollis +
Flowering Mar–May  +, fruiting Sep–Nov.  +
Crataegus mollis var. viburnifolia +
Flowering Mar  +, fruiting Sep–Oct.  +
Crataegus monogyna var. monogyna +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus munda +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus nananixonii +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus neobushii +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus nitida +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus oakesiana +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus okanaganensis var. okanaganensis +
Flowering May  +, fruiting late Aug–Sep.  +
Crataegus okanaganensis var. wellsii +
Flowering May  +, fruiting late Aug–Sep.  +
Crataegus okennonii +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus opaca +
Flowering Feb–Mar  +, fruiting May–Jun.  +
Crataegus opima +
Flowering early–mid Apr  +, fruiting Sep–Oct.  +
Crataegus orbicularis +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ouachitensis var. minor +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ouachitensis var. ouachitensis +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus padifolia var. incarnata +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus padifolia var. padifolia +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus pennsylvanica +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus persimilis +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus pexa +
Flowering Mar–Apr  +, fruiting Aug.  +
Crataegus phaenopyrum +
Flowering Jun  +, fruiting Sep–Nov.  +
Crataegus phippsii +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus pinetorum +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus populnea +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus prona +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus pruinosa var. dissona +
Flowering Apr–May  +, fruiting Sep–Nov.  +
Crataegus pruinosa var. magnifolia +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus pruinosa var. parvula +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus pruinosa var. pruinosa +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus pruinosa var. rugosa +
Flowering Apr–May  +, fruiting Sep–Nov.  +
Crataegus pruinosa var. virella +
Flowering Apr–May  +, fruiting Sep–Nov.  +
Crataegus pulcherrima +
Flowering mid Apr  +, fruiting Sep–Oct.  +
Crataegus punctata +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus purpurella +
Flowering late May–early Jun  +, fruiting Aug–Sep.  +
Crataegus quaesita +
Flowering Mar–Apr  +, fruiting Jul–Aug.  +
Crataegus reverchonii var. mohrii +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus reverchonii var. palmeri +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus reverchonii var. reverchonii +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus rivularis +
Flowering mid May–early Jun  +, fruiting Aug–Sep.  +
Crataegus rivuloadamensis +
Flowering late May–early Jun  +, fruiting Aug–Sep.  +
Crataegus rivulopugnensis +
Flowering late May–early Jun  +, fruiting Aug–Sep.  +
Crataegus roribacca +
Flowering Apr  +, fruiting Sep.  +
Crataegus rubella +
Flowering late Apr–early May  +, fruiting Sep–Oct.  +
Crataegus rubribracteolata +
Flowering late May  +, fruiting late Aug–Sep.  +
Crataegus saligna +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus sargentii +
Flowering late Mar–mid Apr  +, fruiting Sep–Nov.  +
Crataegus scabrida var. asperifolia +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus scabrida var. cyclophylla +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus scabrida var. egglestonii +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus scabrida var. scabrida +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus schizophylla +
Flowering May–Jun  +, fruiting Oct.  +
Crataegus schuettei var. cuneata +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus schuettei var. ferrissii +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus schuettei var. gigantea +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus schuettei var. schuettei +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus segnis +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus senta +
Flowering Apr–early May  +, fruiting Aug–Sep.  +
Crataegus sheila-phippsiae var. saskatchewanensis +
Flowering May–Jun  +, fruiting Aug–Sep.  +
Crataegus sheila-phippsiae var. sheila-phippsiae +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus sheridana +
Flowering May–Jun  +, fruiting Sep.  +
Crataegus shuswapensis +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus sororia +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus spathulata +
Flowering Apr  +, fruiting Sep–Nov.  +
Crataegus spes-aestatum +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus stolonifera +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus stonei +
Flowering late May–early Jun  +, fruiting Sep–Oct.  +
Crataegus submollis +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus suborbiculata +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus succulenta var. gemmosa +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus succulenta var. michiganensis +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus succulenta var. neofluvialis +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus succulenta var. pisifera +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus succulenta var. succulenta +
Flowering Apr–Jun  +, fruiting Sep–Oct.  +
Crataegus tecta +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus teres +
Flowering Mar  +, fruiting Aug–Sep.  +
Crataegus texana var. dasyphylla +
Flowering Mar–Apr  +, fruiting Sep–Nov.  +
Crataegus texana var. texana +
Flowering Mar–Apr  +, fruiting Sep–Nov.  +
Crataegus tracyi +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus triflora +
Flowering late Apr–early May  +, fruiting Sep–Nov.  +
Crataegus turnerorum +
Flowers Apr  +, fruiting Sep–Oct.  +
Crataegus uniflora +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Crataegus ursopedensis +
Flowering May–Jun  +, fruiting not recorded.  +
Crataegus venusta +
Flowering early–mid Apr  +, fruiting Sep–Nov.  +
Crataegus viridis var. glabriuscula +
Flowering Apr  +, fruiting Sep–Nov.  +
Crataegus viridis var. lanceolata +
Flowering Apr  +, fruiting Sep–Nov.  +
Crataegus viridis var. nitens +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus viridis var. ovata +
Flowering early May  +, fruiting Oct.  +
Crataegus viridis var. velutina +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus viridis var. viridis +
Flowering Apr–May  +, fruiting Sep–Nov.  +
Crataegus visenda +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus wattiana var. wattiana +
Flowering Apr–Jun  +, fruiting Sep–Oct.  +
Crataegus williamsii +
Flowering May–Jun  +, fruiting Sep–Oct.  +
Crataegus wootoniana +
Flowering May  +, fruiting Sep.  +
Crataegus ×atrorubens +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ×bicknellii +
Flowering Jun  +, fruiting Sep–Oct.  +
Crataegus ×coleae +
Flowering May  +, fruiting late Sep.  +
Crataegus ×collicola +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×disperma +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×dispessa +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×fretalis +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×incaedua +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×kelloggii +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ×latebrosa +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ×lucorum +
Flowering May  +, fruiting Sep–Oct.  +
Crataegus ×rufula +
Flowering Feb–Mar  +, fruiting May–Jun.  +
Crataegus ×sicca nothovar. glabrifolia +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ×sicca nothovar. sicca +
Flowering Apr  +, fruiting Sep–Oct.  +
Crataegus ×vailiae +
Flowers Apr–May  +, fruiting Sep–Oct.  +
Crepis acuminata +
Flowering May–Aug.  +
Crepis atribarba +
Flowering May–Jul.  +
Crepis bakeri subsp. bakeri +
Flowering May–Jul.  +
Crepis bakeri subsp. cusickii +
Flowering Jun–Jul.  +
Crepis bakeri subsp. idahoensis +
Flowering May–Jul.  +
Crepis barbigera +
Flowering May–Jul.  +
Crepis biennis +
Flowering Jun–Aug.  +
Crepis bursifolia +
Flowering Apr–Sep.  +
Crepis capillaris +
Flowering May–Nov.  +
Crepis elegans +
Flowering Jun–Sep.  +
Crepis foetida +
Flowering Apr–Sep.  +
Crepis intermedia +
Flowering May–Jul.  +
Crepis modocensis subsp. glareosa +
Flowering May–Jul.  +
Crepis modocensis subsp. modocensis +
Flowering May–Jul.  +
Crepis modocensis subsp. rostrata +
Flowering May–Jul.  +
Crepis modocensis subsp. subacaulis +
Flowering May–Jul.  +
Crepis monticola +
Flowering May–Jul.  +
Crepis nana +
Flowering May–Sep.  +
Crepis nicaeënsis +
Flowering May–Aug.  +
Crepis occidentalis subsp. conjuncta +
Flowering Jun–Jul.  +
Crepis occidentalis subsp. costata +
Flowering Jun–Jul.  +
Crepis occidentalis subsp. occidentalis +
Flowering May–Jun.  +
Crepis occidentalis subsp. pumila +
Flowering Jun–Jul.  +
Crepis pannonica +
Flowering Jun–Aug.  +
Crepis pleurocarpa +
Flowering Jun–Aug.  +
Crepis pulchra +
Flowering Apr–Aug.  +
Crepis rubra +
Flowering Apr–Jun.  +
Crepis runcinata subsp. andersonii +
Flowering May–Jul.  +
Crepis runcinata subsp. barberi +
Flowering Jun–Sep.  +
Crepis runcinata subsp. glauca +
Flowering May–Aug.  +
Crepis runcinata subsp. hallii +
Flowering Jul–Aug.  +
Crepis runcinata subsp. hispidulosa +
Flowering Jun–Jul.  +
Crepis runcinata subsp. imbricata +
Flowering May–Jun.  +
Crepis runcinata subsp. runcinata +
Flowering Jun–Jul.  +
Crepis setosa +
Flowering May–Nov.  +
Crepis tectorum +
Flowering May–Sep.  +
Crepis vesicaria +
Flowering Feb–Oct.  +
Crepis zacintha +
Flowering Jun–Jul.  +
Crinum americanum var. americanum +
Flowering late winter–autumn (all year in Fla).  +
Crinum americanum var. traubii +
Flowering summer–autumn.  +
Crinum asiaticum +
Flowering summer–fall.  +
Crinum bulbispermum +
Flowering spring–summer.  +
Crinum zeylanicum +
Flowering late spring–summer.  +
Crocanthemum aldersonii +
Flowering Mar–Jun.  +
Crocanthemum arenicola +
Flowering Mar–Apr.  +
Crocanthemum bicknellii +
Flowering Jun–Jul.  +
Crocanthemum canadense +
Flowering late Mar–Jul(–Aug).  +
Crocanthemum carolinianum +
Flowering Mar–May.  +
Crocanthemum corymbosum +
Flowering late Feb–Apr.  +
Crocanthemum dumosum +
Flowering late May–Jun.  +
Crocanthemum georgianum +
Flowering Apr–Jun.  +
Crocanthemum glomeratum +
Flowering Jun–Aug [throughout the year].  +
Crocanthemum greenei +
Flowering Apr–May.  +
Crocanthemum nashii +
Flowering Mar–Jun.  +
Crocanthemum propinquum +
Flowering May–early Jul.  +
Crocanthemum rosmarinifolium +
Flowering May–Jul.  +
Crocanthemum scoparium var. scoparium +
Flowering Mar–Jul.  +
Crocanthemum scoparium var. vulgare +
Flowering Mar–Jul.  +
Crocanthemum suffrutescens +
Flowering Apr–Jun.  +
Crocidium multicaule +
Flowering Feb–Jun.  +
Crocosmia ×crocosmiiflora +
Flowering mainly Jul–Aug.  +
Croomia pauciflora +
Flowering spring.  +
Croptilon divaricatum +
Flowering (Jul–)Aug–Oct(–Nov).  +
Croptilon hookerianum var. graniticum +
Flowering Aug–Oct(–Dec).  +
Croptilon hookerianum var. hookerianum +
Flowering Jul–Oct.  +
Croptilon hookerianum var. validum +
Flowering (Jun–)Jul–Oct.  +
Croptilon rigidifolium +
Flowering Sep–Nov(–Dec).  +
Crossidium aberrans +
Capsule mature Jan–Jun(-Aug).  +
Crossidium crassinervium var. crassinervium +
Capsule mature Dec–Jul.  +
Crossidium seriatum +
Capsules mature Jan–Jul.  +
Crossidium squamiferum var. pottioideum +
Capsule mature May–Aug(-Dec).  +
Crossidium squamiferum var. squamiferum +
Capsules mature (Aug-)Dec–Mar.  +
Crossopetalum ilicifolium +
Flowering year-round  +, fruiting year-round.  +
Crossopetalum rhacoma +
Flowering year-round  +, fruiting year-round.  +
Crossosoma bigelovii +
Flowering Jan–May.  +
Crossosoma californicum +
Flowering Feb–May.  +
Croton alabamensis var. alabamensis +
Flowering mostly late Feb–early Apr  +, fruiting mostly May–Jun.  +
Croton alabamensis var. texensis +
Flowering mostly late Feb–early Apr  +, fruiting mostly May–Jun.  +
Croton argenteus +
Flowering Jun–Dec.  +
Croton argyranthemus +
Flowering Mar–Sep.  +
Croton californicus +
Flowering Feb–Oct.  +
Croton capitatus +
Flowering Jun–Oct.  +
Croton ciliatoglandulifer +
Flowering Oct–Dec.  +
Croton cortesianus +
Flowering Feb–Oct, possibly year-round.  +
Croton coryi +
Flowering May–Nov.  +
Croton dioicus +
Flowering Mar–Nov.  +
Croton elliottii +
Flowering Jul–Sep.  +
Croton fruticulosus +
Flowering May–Dec.  +
Croton glandulosus var. arenicola +
Flowering year-round.  +
Croton glandulosus var. floridanus +
Flowering year-round.  +
Croton glandulosus var. lindheimeri +
Flowering May–Dec.  +
Croton glandulosus var. pubentissimus +
Flowering May–Nov.  +
Croton glandulosus var. septentrionalis +
Flowering May–Nov.  +
Croton heptalon +
Flowering May–Dec.  +
Croton humilis +
Flowering year-round.  +
Croton incanus +
Flowering Mar–Nov.  +
Croton leucophyllus var. leucophyllus +
Flowering Jun–Nov.  +
Croton lindheimeri +
Flowering May–Dec.  +
Croton lindheimerianus var. lindheimerianus +
Flowering May–Nov.  +
Croton lindheimerianus var. tharpii +
Flowering Jul–Oct.  +
Croton linearis +
Flowering year-round.  +
Croton michauxii var. elliptica +
Flowering Jun–Oct.  +
Croton michauxii var. michauxii +
Flowering Jun–Oct.  +
Croton monanthogynus +
Flowering May–Nov.  +
Croton parksii +
Flowering Jun–Dec.  +
Croton pottsii var. pottsii +
Flowering May–Oct.  +
Croton pottsii var. thermophilus +
Flowering Jul–Oct.  +
Croton punctatus +
Flowering year-round.  +
Croton sancti-lazari +
Flowering Oct–Nov.  +
Croton setigerus +
Flowering Jun–Oct.  +
Croton soliman +
Flowering May–Jul.  +
Croton sonorae +
Flowering Jul–Sep.  +
Croton suaveolens +
Flowering Apr–Nov.  +
Croton texensis +
Flowering Jun–Nov.  +
Croton wigginsii +
Flowering Feb–May.  +
Crumia latifolia +
Sporophytes mature spring–summer (May, Jun, Jul).  +
Crupina vulgaris +
Flowering spring–summer (Jun–Aug).  +
Cryphaea filiformis +
Capsules mature Mar–Apr.  +
Cryphaea glomerata +
Capsules mature Sep–Jun.  +
Cryphaea nervosa +
Capsules mature Dec–Apr.  +
Cryphaea ravenelii +
Capsules mature Apr–May.  +
Ctenidium molluscum +
Capsules mature summer.  +
Ctenidium schofieldii +
Capsule maturity unknown.  +
Ctenolepis cerasiformis +
Flowering Aug–Sep.  +
Cucumis anguria var. anguria +
Flowering Jul–Oct.  +
Cucumis anguria var. longaculeatus +
Flowering Jul–Oct.  +
Cucumis dipsaceus +
Flowering Jul–Sep.  +
Cucumis melo subsp. agrestis +
Flowering Jul–Oct(–Nov).  +
Cucumis melo subsp. melo +
Flowering Jul–Oct.  +
Cucumis metuliferus +
Flowering Jul–Sep.  +
Cucumis myriocarpus +
Flowering Aug–Nov.  +
Cucumis sativus var. sativus +
Flowering Aug–Nov.  +
Cucurbita digitata +
Flowering (Feb, Apr–)May–Sep(–Oct).  +
Cucurbita ficifolia +
Flowering Jul–Oct.  +
Cucurbita foetidissima +
Flowering May–Aug.  +
Cucurbita maxima +
Flowering Jun–Oct.  +
Cucurbita melopepo var. melopepo +
Flowering Jun–Oct.  +
Cucurbita melopepo var. ozarkana +
Flowering Jun–Oct.  +
Cucurbita melopepo var. texana +
Flowering Jun–Nov.  +
Cucurbita moschata +
Flowering May–Oct.  +
Cucurbita okeechobeensis subsp. okeechobeensis +
Flowering Mar–Nov.  +
Cucurbita palmata +
Flowering (Feb–)Apr–Sep(–Oct).  +
Cucurbita pepo subsp. pepo +
Flowering Jun–Oct.  +
Cuniculotinus gramineus +
Flowering late summer–fall.  +
Cuphea aspera +
Flowering early–late summer.  +
Cuphea carthagenensis +
Flowering late spring–fall.  +
Cuphea glutinosa +
Flowering spring–summer.  +
Cuphea strigulosa +
Flowering summer.  +
Cuphea viscosissima +
Flowering summer–fall.  +
Cuphea wrightii +
Flowering mid–late summer.  +
Curcuma zedoaria +
Flowering spring (May).  +
Cusickiella douglasii +
Flowering Apr–Aug.  +
Cusickiella quadricostata +
Flowering May–Jun.  +
Cyanthillium cinereum +
Flowering year-round.  +
Cyclachaena xanthiifolia +
Flowering Jul–Oct.  +
Cyclanthera dissecta +
Flowering Sep–Nov.  +
Cyclanthera gracillima +
Flowering Aug–Oct.  +
Cyclanthera naudiniana +
Flowering May–Oct.  +
Cyclanthera stenura +
Flowering (May–)Aug–Oct.  +
Cyclodictyon varians +
Capsules mature fall–winter.  +
Cycloloma atriplicifolium +
Flowering late summer–fall.  +
Cyclopogon cranichoides +
Flowering Feb–Mar.  +
Cyclopogon elatus +
Flowering Feb–Mar.  +
Cydonia oblonga +
Flowering Apr–May  +, fruiting Sep–Oct.  +
Cylindropuntia abyssi +
Flowering spring–early summer (Mar–Jun).  +
Cylindropuntia acanthocarpa var. acanthocarpa +
Flowering spring (May).  +
Cylindropuntia acanthocarpa var. coloradensis +
Flowering spring–early summer (Mar–Jun).  +
Cylindropuntia acanthocarpa var. major +
Flowering spring (Mar–Jun).  +
Cylindropuntia acanthocarpa var. thornberi +
Flowering mid-late spring (Apr–Jun).  +
Cylindropuntia arbuscula +
Flowering spring (Apr–Jun).  +
Cylindropuntia bigelovii var. bigelovii +
Flowering spring–fall (Mar–Jun, Sep).  +
Cylindropuntia californica var. californica +
Flowering spring (Apr-early Jun).  +
Cylindropuntia californica var. parkeri +
Flowering spring (Apr–Jul).  +
Cylindropuntia davisii +
Flowering late spring (May–Jun).  +
Cylindropuntia echinocarpa +
Flowering spring (Mar–Jun).  +
Cylindropuntia fulgida var. fulgida +
Flowering spring–fall (Apr–Sep).  +
Cylindropuntia fulgida var. mamillata +
Flowering spring–fall (Apr–Aug, Oct).  +
Cylindropuntia ganderi +
Flowering spring (Mar–May).  +
Cylindropuntia imbricata var. argentea +
Flowering spring (Apr).  +
Cylindropuntia imbricata var. imbricata +
Flowering spring–summer (May–Aug).  +
Cylindropuntia kleiniae +
Flowering late spring–early summer (May–Jun).  +
Cylindropuntia leptocaulis +
Flowering spring–early summer, sometimes fall (Mar–Aug, Oct).  +
Cylindropuntia munzii +
Flowering spring (Mar–May).  +
Cylindropuntia prolifera +
Flowering spring (Apr–Jul).  +
Cylindropuntia ramosissima +
Flowering spring–summer (Apr–Aug).  +
Cylindropuntia spinosior +
Flowering spring–early summer (Apr–Aug).  +
Cylindropuntia tunicata +
Flowering late spring (May–Jun).  +
Cylindropuntia versicolor +
Flowering spring (Apr–Jun).  +
Cylindropuntia whipplei +
Flowering late spring–early summer (May–Jul).  +
Cylindropuntia wolfii +
Flowering spring (Mar–May).  +
Cylindropuntia ×kelvinensis +
Flowering spring (Apr–Jun).  +
Cylindropuntia ×tetracantha +
Flowering spring (Apr–May).  +
Cymbalaria muralis subsp. muralis +
Flowering May–Oct.  +
Cymophyllus fraserianus +
Fruiting early summer (May–Jun).  +
Cynara cardunculus subsp. cardunculus +
Flowering spring–summer (Apr–Jul).  +
Cynara cardunculus subsp. flavescens +
Flowering spring–summer (Apr–Jul).  +
Cynodontium alpestre +
Capsules mature summer.  +
Cynodontium glaucescens +
Capsules mature summer.  +
Cynodontium gracilescens +
Capsules mature summer.  +
Cynodontium jenneri +
Capsules mature summer.  +
Cynodontium polycarpon +
Capsules mature summer.  +
Cynodontium schisti +
Capsules mature spring.  +
Cynodontium strumiferum +
Capsules mature summer.  +
Cynodontium strumulosum +
Capsules mature summer.  +
Cynodontium tenellum +
Capsules mature summer.  +
Cynophalla flexuosa +
Flowering spring–late summer.  +
Cyperus acuminatus +
Fruiting summer–fall (Jul–Oct).  +
Cyperus aggregatus +
Fruiting mid summer–fall (Jul–Oct).  +
Cyperus alopecuroides +
Fruiting summer.  +
Cyperus amabilis +
Fruiting summer.  +
Cyperus articulatus +
Fruiting summer.  +
Cyperus bipartitus +
Fruiting summer.  +
Cyperus cephalanthus +
Fruiting summer.  +
Cyperus compressus +
Fruiting summer–early fall.  +
Cyperus croceus +
Fruiting summer–early fall.  +
Cyperus cuspidatus +
Fruiting summer.  +
Cyperus dentatus +
Fruiting summer.  +
Cyperus dentoniae +
Fruiting mid summer–fall (Jul–Sep).  +
Cyperus diandrus +
Fruiting summer.  +
Cyperus difformis +
Fruiting summer.  +
Cyperus digitatus +
Fruiting summer.  +
Cyperus dipsaceus +
Fruiting late summer.  +
Cyperus distans +
Fruiting summer.  +
Cyperus distinctus +
Fruiting summer.  +
Cyperus drummondii +
Fruiting late spring–summer.  +
Cyperus echinatus +
Fruiting summer–early fall.  +
Cyperus elegans +
Fruiting summer.  +
Cyperus entrerianus +
Fruiting summer.  +
Cyperus eragrostis +
Fruiting summer.  +
Cyperus erythrorhizos +
Fruiting summer.  +
Cyperus esculentus var. heermannii +
Fruiting summer.  +
Cyperus esculentus var. leptostachyus +
Fruiting summer.  +
Cyperus esculentus var. macrostachyus +
Fruiting summer.  +
Cyperus fendlerianus +
Fruiting summer.  +
Cyperus filicinus +
Fruiting summer.  +
Cyperus filiculmis +
Fruiting summer.  +
Cyperus filiformis +
Fruiting spring–fall.  +
Cyperus flavescens +
Fruiting summer–early fall.  +
Cyperus flavicomus +
Fruiting summer–early fall.  +
Cyperus floribundus +
Fruiting mid summer–early fall (Jul–Sep).  +
Cyperus fugax +
Fruiting early summer.  +
Cyperus fuligineus +
Fruiting spring–summer.  +
Cyperus fuscus +
Fruiting summer.  +
Cyperus giganteus +
Fruiting summer.  +
Cyperus gracilis +
Fruiting summer–early fall.  +
Cyperus granitophilus +
Fruiting summer.  +
Cyperus grayi +
Fruiting summer.  +
Cyperus grayoides +
Fruiting summer.  +
Cyperus haspan +
Fruiting summer.  +
Cyperus hermaphroditus +
Fruiting summer–fall.  +
Cyperus houghtonii +
Fruiting summer.  +
Cyperus hypopitys +
Fruiting late summer–early fall.  +
Cyperus hystricinus +
Fruiting late summer–early fall (Jul–Sep).  +
Cyperus involucratus +
Fruiting early summer–fall.  +
Cyperus iria +
Fruiting summer–fall (Jul–Oct).  +
Cyperus laevigatus +
Fruiting summer.  +
Cyperus lancastriensis +
Fruiting summer (Jul–Aug).  +
Cyperus lanceolatus +
Fruiting summer.  +
Cyperus lecontei +
Fruiting summer.  +
Cyperus lentiginosus +
Fruiting spring–summer.  +
Cyperus ligularis +
Fruiting throughout the year.  +
Cyperus lupulinus subsp. lupulinus +
Fruiting summer  +
Cyperus lupulinus subsp. macilentus +
Fruiting summer  +
Cyperus manimae var. asperrimus +
Fruiting summer–early fall.  +
Cyperus melanostachyus +
Fruiting summer.  +
Cyperus microiria +
Fruiting summer.  +
Cyperus mutisii +
Fruiting summer–fall (Jun–Nov).  +
Cyperus ochraceus +
Fruiting summer.  +
Cyperus odoratus +
Fruiting summer–early fall.  +
Cyperus onerosus +
Fruiting early summer (May–Jun).  +
Cyperus ovatus +
Fruiting spring–summer.  +
Cyperus owanii +
Fruiting spring–fall.  +
Cyperus oxylepis +
Fruiting summer.  +
Cyperus pallidicolor +
Fruiting summer.  +
Cyperus papyrus +
Fruiting summer.  +
Cyperus parishii +
Fruiting summer.  +
Cyperus pilosus +
Fruiting summer.  +
Cyperus planifolius +
Fruiting throughout the year.  +
Cyperus plukenetii +
Fruiting summer (Jul–Aug).  +
Cyperus polystachyos +
Fruiting summer–early fall.  +
Cyperus prolifer +
Fruiting summer.  +
Cyperus prolixus +
Fruiting summer.  +
Cyperus pseudothyrsiflorus +
Fruiting mid summer–early fall (Jul–Sep).  +
Cyperus pseudovegetus +
Fruiting summer.  +
Cyperus pumilus +
Fruiting spring–summer.  +
Cyperus reflexus +
Fruiting late spring–fall (May–Oct).  +
Cyperus refractus +
Fruiting summer (Jul–Aug).  +
Cyperus retroflexus +
Fruiting mid summer–early fall (Jul–Sep).  +
Cyperus retrofractus +
Fruiting summer.  +
Cyperus retrorsus +
Fruiting summer (Jun–Aug).  +
Cyperus rotundus +
Fruiting summer–fall.  +
Cyperus sanguinolentus +
Fruiting late summer–fall.  +
Cyperus schweinitzii +
Fruiting late spring–early summer.  +
Cyperus serotinus +
Fruiting summer.  +
Cyperus seslerioides +
Fruiting summer.  +
Cyperus setigerus +
Fruiting summer.  +
Cyperus spectabilis +
Fruiting summer.  +
Cyperus sphacelatus +
Fruiting summer.  +
Cyperus sphaerolepis +
Fruiting summer.  +
Cyperus squarrosus +
Fruiting summer.  +
Cyperus strigosus +
Fruiting summer.  +
Cyperus surinamensis +
Fruiting late spring–early fall.  +
Cyperus tetragonus +
Fruiting summer–fall (Jun–Nov).  +
Cyperus thyrsiflorus +
Fruiting summer.  +
Cyperus virens +
Fruiting spring–fall.  +
Cyphomeris crassifolia +
Flowering late spring–fall.  +
Cyphomeris gypsophiloides +
Flowering mid summer–fall.  +
Cypripedium acaule +
Flowering Apr–Jul.  +
Cypripedium arietinum +
Flowering May–Jun.  +
Cypripedium californicum +
Flowering May–Jun.  +
Cypripedium candidum +
Flowering Apr–Jul.  +
Cypripedium fasciculatum +
Flowering Apr–Aug.  +
Cypripedium guttatum +
Flowering Jun–Jul.  +
Cypripedium kentuckiense +
Flowering Apr–Jun.  +
Cypripedium montanum +
Flowering Feb–Sep.  +
Cypripedium parviflorum var. makasin +
Flowering May–Aug.  +
Cypripedium parviflorum var. parviflorum +
Flowering Apr–Jun.  +
Cypripedium parviflorum var. pubescens +
Flowering Apr–Aug.  +
Cypripedium passerinum +
Flowering Jun–Jul.  +
Cypripedium reginae +
Flowering May–Aug.  +
Cypripedium yatabeanum +
Flowering Jun–Aug.  +
Cypselea humifusa +
Flowering summer–fall.  +
Cyrilla racemiflora +
Flowering May–Jul, sometimes again Sep–Oct.  +
Cyrto-hypnum involvens +
Capsules mature winter [Nov–Dec(-Mar)].  +
Cyrto-hypnum minutulum +
Capsules mature early spring–fall [Feb–Aug(-Oct)].  +
Cyrto-hypnum pygmaeum +
Capsules mature summer (Jul–Sep).  +
Cyrto-hypnum schistocalyx +
Capsule maturity unknown.  +
Cyrtomnium hymenophylloides +
Capsules mature summer.  +
Cyrtomnium hymenophyllum +
Capsules mature summer.  +
Cyrtopodium polyphyllum +
Flowering winter.  +
Cyrtopodium punctatum +
Flowering winter–early spring.  +
Cystopteris bulbifera +
Sporulating summer–fall.  +
Cystopteris fragilis +
Sporulating summer–fall.  +
Cystopteris laurentiana +
Sporulating summer–fall.  +
Cystopteris montana +
Sporulating summer–fall.  +
Cystopteris protrusa +
Sporulating spring–summer.  +
Cystopteris reevesiana +
Sporulating summer–fall.  +
Cystopteris tennesseensis +
Sporulating summer–fall.  +
Cystopteris tenuis +
Sporulating summer–fall.  +
Cystopteris utahensis +
Sporulating summer–fall.  +
D
Dactylorhiza aristata +
Flowering late spring–mid summer.  +
Dactylorhiza majalis var. junialis +
Flowering late Jun (Ont)–late Jul (Nfld).  +
Dalechampia scandens +
Flowering and fruiting year-round, especially at end of summer/rainy season.  +
Daltonia splachnoides +
Capsules mature summer.  +
Damasonium californicum +
Flowering late summer.  +
Daphne laureola +
Flowering late winter–early spring (Feb–Apr).  +
Daphne mezereum +
Flowering summer (Jun–Aug).  +
Darlingtonia californica +
Flowering mid Apr–Jul.  +
Darmera peltata +
Flowering Apr–Jul.  +