Property:Phenology

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Amaranthus powellii +
Flowering summer–fall.  +
Amaranthus pumilus +
Flowering summer–fall.  +
Amaranthus retroflexus +
Flowering summer–fall.  +
Amaranthus scleropoides +
Flowering summer–fall.  +
Amaranthus spinosus +
Flowering summer–fall.  +
Amaranthus tamaulipensis +
Flowering spring–fall.  +
Amaranthus thunbergii +
Flowering summer–fall.  +
Amaranthus torreyi +
Flowering summer–fall.  +
Amaranthus tricolor +
Flowering summer–fall.  +
Amaranthus tuberculatus +
Flowering summer–fall.  +
Amaranthus viridis +
Flowering summer–fall.  +
Amaranthus viscidulus +
Flowering summer–fall.  +
Amaranthus watsonii +
Flowering late winter–spring, summer–fall.  +
Amaranthus wrightii +
Flowering summer–fall.  +
Amauriopsis dissecta +
Flowering (Jun–)Aug–Sep(–Oct).  +
Amberboa moschata +
Flowering winter–early summer (Jan–Jul).  +
Amblyolepis setigera +
Flowering (Jan–)Mar–May(–Sep).  +
Amblyopappus pusillus +
Flowering spring.  +
Ambrosia acanthicarpa +
Flowering (Apr–)Jul–Nov.  +
Ambrosia ambrosioides +
Flowering Mar–May.  +
Ambrosia artemisiifolia +
Flowering Jul–Oct.  +
Ambrosia bidentata +
Flowering Jul–Oct.  +
Ambrosia chamissonis +
Flowering Apr–Nov.  +
Ambrosia cheiranthifolia +
Flowering Jun–Nov.  +
Ambrosia chenopodiifolia +
Flowering Mar–Apr.  +
Ambrosia confertiflora +
Flowering (May–)Sep–Dec.  +
Ambrosia cordifolia +
Flowering Mar–Apr.  +
Ambrosia deltoidea +
Flowering Feb–May.  +
Ambrosia dumosa +
Flowering Mar–May(–Dec).  +
Ambrosia eriocentra +
Flowering Apr–May(–Jul).  +
Ambrosia grayi +
Flowering Aug–Sep.  +
Ambrosia hispida +
Flowering Apr.  +
Ambrosia ilicifolia +
Flowering Jan–Apr.  +
Ambrosia linearis +
Flowering Jul.  +
Ambrosia monogyra +
Flowering (May–)Aug–Nov.  +
Ambrosia psilostachya +
Flowering Jul–Oct(–Dec).  +
Ambrosia pumila +
Flowering May–Jun(–Oct).  +
Ambrosia salsola +
Flowering Mar–May(–Jun).  +
Ambrosia tomentosa +
Flowering Jun–Sep.  +
Ambrosia trifida +
Flowering Jul–Nov.  +
Amelanchier alnifolia var. alnifolia +
Flowering May–Jul  +, fruiting Jul–Aug.  +
Amelanchier alnifolia var. pumila +
Flowering May–Jun  +, fruiting Jul–Sep.  +
Amelanchier alnifolia var. semiintegrifolia +
Flowering Mar–Jun  +, fruiting Jun–Aug.  +
Amelanchier amabilis +
Flowering May–Jun  +, fruiting Jul–Aug.  +
Amelanchier arborea +
Flowering Feb–May  +, fruiting May–Jul.  +
Amelanchier bartramiana +
Flowering May–Aug  +, fruiting Jul–Sep.  +
Amelanchier canadensis var. canadensis +
Flowering Mar–May  +, fruiting Jun–Jul.  +
Amelanchier canadensis var. obovalis +
Flowering Mar–May  +, fruiting May–Jun.  +
Amelanchier cusickii +
Flowering Mar–Jul  +, fruiting May–Aug.  +
Amelanchier fernaldii +
Flowering Jun–Jul  +, fruiting Jul–Aug.  +
Amelanchier gaspensis +
Flowering May–Jun  +, fruiting Jul–Sep.  +
Amelanchier humilis +
Flowering Apr–May  +, fruiting Jul–Aug.  +
Amelanchier interior +
Flowering May–Jun  +, fruiting Jul–Aug.  +
Amelanchier intermedia +
Flowering May–Jun  +, fruiting Jun–Aug.  +
Amelanchier laevis +
Flowering Apr–Jun  +, fruiting Jun–Jul.  +
Amelanchier nantucketensis +
Flowering Mar–May  +, fruiting Jun–Jul.  +
Amelanchier nitens +
Flowering Apr–Jun  +, fruiting Jun–Jul.  +
Amelanchier pallida +
Flowering Apr–Jun  +, fruiting Jul–Sep.  +
Amelanchier sanguinea +
Flowering May–Jun  +, fruiting Jul–Aug.  +
Amelanchier spicata +
Flowering Apr–Jun  +, fruiting Jul–Aug.  +
Amelanchier utahensis +
Flowering Apr–May  +, fruiting Jul–Sep.  +
Amerorchis rotundifolia +
Flowering Jun–Jul.  +
Amianthium muscitoxicum +
Flowering late spring–summer.  +
Ammannia auriculata +
Flowering late spring–late fall.  +
Ammannia coccinea +
Flowering late spring–late fall.  +
Ammannia grayi +
Flowering late spring–fall (May–Sep).  +
Ammannia latifolia +
Flowering late spring–late fall.  +
Ammannia robusta +
Flowering late spring–late fall.  +
Amoreuxia gonzalezii +
Flowering Jul–Sep.  +
Amoreuxia palmatifida +
Flowering Jun–Sep  +, fruiting Jul–Oct.  +
Amoreuxia wrightii +
Flowering May–Jul(–Oct).  +
Ampelaster carolinianus +
Flowering peak late fall–winter, year round (Fla).  +
Ampelopsis aconitifolia +
Flowering May–Aug  +, fruiting Jun–Oct.  +
Ampelopsis cordata +
Flowering late Apr–Jun  +, fruiting Jul–Sep.  +
Ampelopsis glandulosa +
Flowering late May–Jul  +, fruiting Jul–Oct.  +
Amphiachyris amoena +
Flowering late Sep–Oct.  +
Amphiachyris dracunculoides +
Flowering Jul–Nov.  +
Amphipappus fremontii var. fremontii +
Flowering Mar–May.  +
Amphipappus fremontii var. spinosus +
Flowering Mar–May.  +
Amphiscirpus nevadensis +
Fruiting summer.  +
Anacamptodon splachnoides +
Capsules mature (Jan-)Apr–Oct(-Dec).  +
Anacolia menziesii +
Capsules mature Feb–Aug.  +
Anagallis arvensis +
Flowering spring–summer.  +
Anagallis minima +
Flowering spring–fall.  +
Anagallis monelli +
Flowering spring–fall.  +
Anagallis pumila +
Flowering spring–early winter.  +
Anaphalis margaritacea +
Flowering Jul–Oct (sporadically longer).  +
Ancistrocactus brevihamatus +
Flowering Jan–Mar.  +
Ancistrocactus scheeri +
Flowering Nov–Mar.  +
Ancistrocarphus filagineus +
Flowering and fruiting mid Mar–late Jun.  +
Ancistrocarphus keilii +
Flowering and fruiting Mar–Apr.  +
Andreaeobryum macrosporum +
Capsules mature late summer.  +
Andromeda polifolia var. latifolia +
Flowering May–Jul(-Sep)  +, fruiting Jun–Sep.  +
Andromeda polifolia var. polifolia +
Flowering May–Aug  +, fruiting Jun–Sep.  +
Androsace chamaejasme subsp. lehmanniana +
Flowering summer.  +
Androsace elongata subsp. acuta +
Flowering early-mid summer.  +
Androsace filiformis +
Flowering early-mid summer.  +
Androsace occidentalis +
Flowering early-mid summer.  +
Androsace septentrionalis +
Flowering spring–early fall.  +
Androstephium breviflorum +
Flowering spring (Mar–Jun).  +
Androstephium coeruleum +
Flowering spring (Feb–May).  +
Anelsonia eurycarpa +
Flowering Jun–Jul.  +
Anemone acutiloba +
Flowering spring.  +
Anemone americana +
Flowering spring.  +
Anemone berlandieri +
Flowering winter–spring (Feb–Apr).  +
Anemone canadensis +
Flowering spring–summer (May–Aug).  +
Anemone caroliniana +
Flowering winter–spring (Feb–Apr).  +
Anemone cylindrica +
Flowering summer (Jun–Jul).  +
Anemone deltoidea +
Flowering spring–summer (Apr–Jul).  +
Anemone drummondii var. drummondii +
Flowering summer (Jun–Aug).  +
Anemone drummondii var. lithophila +
Flowering summer (Jun–Aug).  +
Anemone edwardsiana var. edwardsiana +
Flowering winter–spring (Feb–Apr).  +
Anemone edwardsiana var. petraea +
Flowering winter–spring (Feb–Apr).  +
Anemone grayi +
Flowering winter–early summer (Feb–Jun).  +
Anemone lancifolia +
Flowering spring–summer (Apr–Jun).  +
Anemone lyallii +
Flowering spring–summer (Mar–Jul).  +
Anemone multiceps +
Flowering spring–summer (May–Jul).  +
Anemone multifida var. multifida +
Flowering spring–summer (Apr–Jul).  +
Anemone multifida var. saxicola +
Flowering summer (Jun–Aug).  +
Anemone multifida var. stylosa +
Flowering summer (Jul–Aug).  +
Anemone multifida var. tetonensis +
Flowering spring–summer (Mar–Aug).  +
Anemone narcissiflora var. monantha +
Flowering spring–summer (May–Jul).  +
Anemone narcissiflora var. villosissima +
Flowering spring–summer (May–Aug).  +
Anemone narcissiflora var. zephyra +
Flowering summer (Jun–Aug).  +
Anemone occidentalis +
Flowering spring–summer (May–Aug/Sep).  +
Anemone okennonii +
Flowering spring (Mar–Apr).  +
Anemone oregana var. felix +
Flowering spring (Apr–Jun).  +
Anemone oregana var. oregana +
Flowering spring (Mar–Jun).  +
Anemone parviflora +
Flowering spring–summer (May–Aug).  +
Anemone patens var. multifida +
Flowering spring–summer (Apr–Aug).  +
Anemone piperi +
Flowering spring–summer (Apr–Aug).  +
Anemone quinquefolia var. minima +
Flowering spring (Apr–May).  +
Anemone quinquefolia var. quinquefolia +
Flowering spring–early summer (Mar–Jun).  +
Anemone richardsonii +
Flowering spring–summer (May–Aug).  +
Anemone tuberosa +
Flowering spring (Apr–May).  +
Anemone virginiana var. alba +
Flowering spring–summer (May–Jul).  +
Anemone virginiana var. cylindroidea +
Flowering summer (Jun–Aug).  +
Anemone virginiana var. virginiana +
Flowering summer (Jun–Aug).  +
Anemopsis californica +
Flowering early spring–summer.  +
Angelonia gardneri +
Flowering May–Oct.  +
Anisocarpus madioides +
Flowering Apr–Sep.  +
Anisocarpus scabridus +
Flowering Jun–Sep.  +
Anisocoma acaulis +
Flowering Mar–May.  +
Annona glabra +
Flowering spring–early summer.  +
Annona squamosa +
Flowering spring–early summer.  +
Anoda abutiloides +
Flowering spring–fall.  +
Anoda crenatiflora +
Flowering fall.  +
Anoda cristata +
Flowering summer–fall.  +
Anoda lanceolata +
Flowering summer–fall.  +
Anoda pentaschista +
Flowering late summer–mid winter.  +
Anoda reticulata +
Flowering late summer.  +
Anoda thurberi +
Flowering late summer–early fall.  +
Anomobryum concinnatum +
Capsules mature Jul–Sep.  +
Anomobryum julaceum +
Capsules mature Jun–Sep.  +
Anomodon attenuatus +
Capsules mature early-mid fall.  +
Anomodon minor +
Capsules mature early fall.  +
Anomodon rostratus +
Capsules mature early-mid fall.  +
Anomodon rugelii +
Capsules mature mid fall.  +
Anomodon viticulosus +
Capsules mature early-mid fall.  +
Anredera cordifolia +
Flowering late summer–fall.  +
Anredera vesicaria +
Flowering late summer–fall.  +
Antennaria alpina +
Flowering mid–late summer.  +
Antennaria anaphaloides +
Flowering summer.  +
Antennaria arcuata +
Flowering summer.  +
Antennaria argentea +
Flowering summer.  +
Antennaria aromatica +
Flowering mid summer.  +
Antennaria corymbosa +
Flowering early–mid summer.  +
Antennaria densifolia +
Flowering summer.  +
Antennaria dimorpha +
Flowering early–mid spring.  +
Antennaria dioica +
Flowering summer.  +
Antennaria flagellaris +
Flowering mid–late spring.  +
Antennaria friesiana subsp. alaskana +
Flowering summer.  +
Antennaria friesiana subsp. friesiana +
Flowering summer.  +
Antennaria friesiana subsp. neoalaskana +
Flowering summer.  +
Antennaria geyeri +
Flowering summer.  +
Antennaria howellii subsp. canadensis +
Flowering mid spring–early summer.  +
Antennaria howellii subsp. howellii +
Flowering mid spring–early summer.  +
Antennaria howellii subsp. neodioica +
Flowering mid spring–early summer.  +
Antennaria howellii subsp. petaloidea +
Flowering mid spring–early summer.  +
Antennaria lanata +
Flowering summer.  +
Antennaria luzuloides subsp. aberrans +
Flowering summer.  +
Antennaria luzuloides subsp. luzuloides +
Flowering summer.  +
Antennaria marginata +
Flowering summer.  +
Antennaria media +
Flowering summer.  +
Antennaria microphylla +
Flowering early–mid summer.  +
Antennaria monocephala subsp. angustata +
Flowering summer.  +
Antennaria monocephala subsp. monocephala +
Flowering summer.  +
Antennaria neglecta +
Flowering early–mid spring.  +
Antennaria parlinii subsp. fallax +
Flowering early–mid spring.  +
Antennaria parlinii subsp. parlinii +
Flowering early–mid spring.  +
Antennaria parvifolia +
Flowering late spring–summer.  +
Antennaria plantaginifolia +
Flowering mid–late spring.  +
Antennaria pulchella +
Flowering summer.  +
Antennaria pulcherrima subsp. eucosma +
Flowering summer.  +
Antennaria pulcherrima subsp. pulcherrima +
Flowering summer.  +
Antennaria racemosa +
Flowering summer.  +
Antennaria rosea subsp. arida +
Flowering summer.  +
Antennaria rosea subsp. confinis +
Flowering summer.  +
Antennaria rosea subsp. pulvinata +
Flowering summer.  +
Antennaria rosea subsp. rosea +
Flowering summer.  +
Antennaria rosulata +
Flowering summer.  +
Antennaria soliceps +
Flowering summer.  +
Antennaria solitaria +
Flowering early–mid spring.  +
Antennaria stenophylla +
Flowering in late spring–early summer.  +
Antennaria suffrutescens +
Flowering early summer.  +
Antennaria umbrinella +
Flowering summer.  +
Antennaria virginica +
Flowering early–mid spring.  +
Anthemis arvensis +
Flowering May–Jul(–Sep).  +
Anthemis cotula +
Flowering (Apr–)May–Aug(–Oct).  +
Antigonon leptopus +
Flowering year-round.  +
Antirrhinum majus +
Flowering May–Oct.  +
Anulocaulis annulatus +
Flowering late winter–late summer, occasionally mid fall.  +
Anulocaulis eriosolenus +
Flowering late spring-mid fall.  +
Anulocaulis leiosolenus var. gypsogenus +
Flowering late spring–early fall.  +
Anulocaulis leiosolenus var. howardii +
Flowering late spring–early fall.  +
Anulocaulis leiosolenus var. lasianthus +
Flowering late spring–early fall.  +
Anulocaulis leiosolenus var. leiosolenus +
Flowering late spring–early fall.  +
Anulocaulis reflexus +
Flowering late spring–early fall.  +
Aongstroemia longipes +
Capsules mature late summer.  +
Apacheria chiricahuensis +
Flowering Apr–Nov.  +
Aphanes arvensis +
Flowering Apr–May.  +
Aphanes australis +
Flowering Mar–May.  +
Aphanes occidentalis +
Flowering Mar–Jun.  +
Aphanisma blitoides +
Flowering summer–early fall.  +
Aphanorrhegma serratum +
Capsules mature (Jul) Sep–Dec.  +
Aphanostephus pilosus +
Flowering May–Jul.  +
Aphanostephus ramosissimus var. humilis +
Flowering Apr–Jun(–Oct).  +
Aphanostephus ramosissimus var. ramosissimus +
Flowering (Feb–)Apr–Jul(–Sep).  +
Aphanostephus riddellii +
Flowering Mar–Aug(–Oct).  +
Aphanostephus skirrhobasis var. kidderi +
Flowering Mar–Jun(–Aug).  +
Aphanostephus skirrhobasis var. skirrhobasis +
Flowering (Mar–)Apr–Jul(–Aug).  +
Aphanostephus skirrhobasis var. thalassius +
Flowering (Feb–)Apr–Dec.  +
Aphragmus eschscholtzianus +
Flowering Jun–Jul.  +
Aplectrum hyemale +
Flowering late spring.  +
Aplodon wormskioldii +
Capsules mature summer.  +
Apodanthera undulata var. undulata +
Flowering May–Sep.  +
Aponogeton distachyos +
Flowering late winter–spring (Mar–Apr), fall (Oct–Nov).  +
Aptenia cordifolia +
Flowering spring–fall.  +
Apteria aphylla +
Flowering late summer–fall.  +
Aquilegia barnebyi +
Flowering summer (Jun–Jul).  +
Aquilegia brevistyla +
Flowering summer (Jun–Aug).  +
Aquilegia canadensis +
Flowering spring–summer (Mar–Jun).  +
Aquilegia chaplinei +
Flowering summer (Jul–Aug).  +
Aquilegia chrysantha +
Flowering spring–summer (Apr–Sep).  +
Aquilegia coerulea var. alpina +
Flowering summer (Jun–Aug).  +
Aquilegia coerulea var. coerulea +
Flowering summer (mid Jun-early Sep).  +
Aquilegia coerulea var. ochroleuca +
Flowering summer (late Jun–Aug).  +
Aquilegia coerulea var. pinetorum +
Flowering spring–summer (May–Sep).  +
Aquilegia desertorum +
Flowering spring–fall (May–Oct).  +
Aquilegia elegantula +
Flowering spring–summer (May–Jul).  +