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naked. Spores globose, minutely papillose. North America, Eurasia, mostly temperate zone. Genera 4, species 7 (2 genera, 4 species in the flora). Helodiaceae

ribbed, often crowned with persistent sepals and styles. x = 8. Mostly north temperate zone, Europe, Asia (s to India, Iran). Species ca. 25 (1 in the flora)

Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., Wis., Mostly north temperate zone, Europe, Asia (s to India, Iran). Subspecies 2 (2 in the flora)

x = 8. Mostly north temperate zones Species ca. 5 (3 in the flora). In North America Ostrya consists of small trees in the northern temperate deciduous

distally, margins dentate or slightly dentate, border ± widened at transitional zone in outer peristomial layer pattern; specialized exostome teeth variously

are found throughout Arctic, boreal, and temperate zones, also on high mountains in subtropical and tropical zones, and are more diverse in xeric and Mediterranean

or curved, rarely folded. Widespread, well represented in the north-temperate zone. Genera 48, species ca. 1200 (35 genera, 442 species in the flora).

plants in arid and semiarid regions of subtropical and lower to middle temperate latitudes. Genera ca. 1500, species ca. 23,000 (418 genera, 2413 species

compressed laterally, coat tough, margins absent. x=9. Subtropical and temperate North America. Species 8 (8 in the flora). Exell, A. W. 1927. William Bartram

aristate), rarely of both scales and bristles or of awns. Almost worldwide, mostly temperate. Genera 170, species 2800+ (77 genera, 719 species in the flora). The

reflexed, distinct, similar, white, yellow, pink, or violet, often with basal zone of yellow or other colors, lanceolate to ovate, inner tepals auriculate at

sori. Spores brownish, cristate, rarely rugose. x = 38, 39, 41. Mostly north temperate regions and higher elevations in the tropics. Woodsia is a well-marked

or cultivars derived from them, are from ecologically equivalent, temperate zones and their naturalization potential is high. Asparagus and Allium have

cotyledons flat or greatly thickened, oily. Primarily boreal and cool temperate zones of Northern Hemisphere Genera 6, species ca. 125 (5 genera, 33 species

moderately wide to broad, membranaceous. x = 14. Throughout n temperate, boreal, and arctic zones of the Northern Hemisphere, North America, Asia. Species ca

inferior, lateral, or superior. x = 9. Worldwide, mainly in subarctic, temperate, and subtropical regions. Species ca. 250 (62 in the flora). Many species

meristem absent. x = 67, 68. Temperate, alpine, and arctic regions, and tropical Asian mountains. We distinguish the temperate and arctic Huperzia as a distinct

only on ray or only on disc cypselae, or 0. x = 9. Nearly worldwide, mostly in temperate regions. Species ca. 390 (173 in the flora). The North American and

M., and L. Soukupová, eds. 1988. Studies in wetland carices of the temperate zone. Aquatic Bot. 30: 1–168. Catling, P. M., A. A. Reznicek, and W. J. Crins

scarious, erose, hyaline or not, (apices usually with a well-defined green zone, sometimes ± foliaceous), faces glabrous or hairy, sometimes stipitate-glandular

Seeds: endosperm abundant, mealy; embryo linear, straight. Mostly in north temperate zone, some circumboreal, a few south to Mexico, New Zealand, and

grow primarily in open, mesic habitats, and are native to the northern temperate zone and South America. Four species are native to the Flora region, four

reticulate; embryo annular. x = 16, 17. Mostly tropical, subtropical, and warm-temperate zones, some species in temperate zones, some taxa are at present almost

basal and cauline; alternate; petiolate or sessile; blades (1–7-nerved) mostly cuneate, elliptic, lanceolate, linear, oblanceolate, or spatulate, margins

Species of Agrostis growing in the temperate regions of the Northern Hemisphere and on tropical mountains are mostly perennials, with the annual species

rosette; ligule color may change in dried material; cypsela size, though mostly consistent within species, may vary considerably within a head, the outer

laterally compressed, longitudinally ribbed. x = 11. Throughout north temperate zone, North America, Europe, Asia. Species ca. 15 (3 in the flora). Corylus

Iowa, Ohio, Mont. Andropogon is a cosmopolitan genus of tropical and temperate zones, comprising approximately 120 species. Thirteen species are native to

Seeds rarely produced (sterile) or many. x = 11. Introduced; temperate zones worldwide, temperate e Asia. Species 15–30 (2 in the flora). Hemerocallis is important

tardily deciduous, jointed. x = 7. North America, nw Mexico, Eurasia, mostly temperate areas. Species 25–30 (15 in the flora). The convergence of morphologic

early spring. Gardeners and wildflower enthusiasts, over most of the temperate zones of the world, consider trilliums to be among the most beautiful of wildflowers

surrounding copious farinose perisperm. Worldwide, mostly tropics, subtropics, warm-temperate zones. Species ca. 32 (10 in the flora). The generic name

Spores 10–20 µm. Generated Map Legacy Map North America, Eurasia, North Temperate Zone, moderate to high elevations. Varieties 11 (3 in the flora). Pseudoleskea

apically attenuate bristles in 1 series. x = 9. Widespread, mostly in subtropical and warm-temperate zones. Species 25–40+ (4 in the flora). Distinctions between

short-pedunculate or subsessile; staminate spikes 5–9.5 cm; pistillate spikes mostly ca. 40–470-flowered (405–705-flowered if branched), (1.5–)3.5–14 cm × (2

Calyptra cucullate. Spores mostly 8–12 µm. KOH laminal color reaction yellow, occasionally yellowish orange. Worldwide in temperate zones. Species ca. 200 (6

America, Europe, Asia (Malaysia), Africa, Atlantic Islands, mostly in arctic, boreal, and temperate regions, introduced in Australasia, Oceania. Species ca

America, South America, cultivated elsewhere except cold-temperate, subarctic, and arctic zones. While reported as naturalized in some states, most specimens

of many hybrids and cultivars that have been popular for gardens in temperate zones around the world. Various varieties or cultivars of Spiraea japonica

includes about 500 species. It grows throughout the world, principally in temperate and boreal regions. Sixty-one species and five hybrid species are native

fragile propaguloid leaf tips, or by deterioration of fragile leaves along zones of laminal weakness. Sexual condition dioicous, occasionally autoicous; perigonia

Mexico, Central America, South America, Eurasia, Africa (Ethiopia), mostly north-temperate. Species ca. 500 (20 in the flora). Primula is widely distributed

vegetation above the temperate rainforest proceeds through an Abies amabilis zone to a Tsuga mertensiana zone and an Abies lasiocarpa subalpine zone (J.F. Franklin

perfect. Calyptra naked. Spores 9–20 µm. Nearly worldwide, boreal and temperate zones, alpine to middle elevations in the tropics. Species ca. 30 (11 in the

Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Eurasia, introduced also in temperate zones nearly worldwide. Lythrum salicaria is one of the ten most frequently

wide-ranging in primarily temperate areas; of these, 62 are circum-North Temperate and 56 are represented also in the temperate regions of one or more of

temperatures (fig. 3.2), equable subtropical, warm temperate, and temperate climates extended in successive zones along low thermal gradients from the southern

embryo in center, 6-ranked, flattened into 60° wedge, verrucose. x = 12. Temperate Northern Hemisphere south to mountains of Asian tropics. Species ca. 100

subtropics are mostly dry all year, and the Mediterranean climate at the western margin of the continent has rainy winters and dry summers. In temperate latitudes

critical concerns in the tropics, but the loss of biodiversity in the temperate zone is every bit as important and timely. In the continental United States

Frequently the cracks extend deeper than 1 m and are very wide. Vertisols are mostly found in regions with distinct wet-dry seasons. They are of minor extent

America, and it probably has the richest temperate-subtropical fern flora in the world. Most of North America is temperate or arctic, and much of the western