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In North America, most authors have followed K. K. Mackenzie's (1931-1935) arrangement of the genus, in which he did not recognize subgenera and instead divided the North American Carex into 71 sections. The sections were narrowly defined, for the most part consisting of groups of species that were very similar morphologically.Discussion. Species 45 (23 in the flora). Two extra-limital species of Spiranthes have been reported from the flora. The Central American S. graminea Lindley was reported from southern Arizona (C. A. Luer 1975), based on plants subsequently described as S. delitescens Sheviak.Species 250-700 (37 in the flora): North America, Mexico, West Indies, Central America, South America, Eurasia, Africa, Pacific Islands (Hawaii, New Zealand), Australia; introduced widely. Molecular data (L. A. Alice and C. S. Campbell 1999) have shown Rubus to be monophyletic when including Dalibarda (R. repens). These data also show that ...Senecio aronicoides is a species of flowering plant in the aster family known by the common name rayless ragwort.It is native to Oregon and northern and central California, where it can be found in the woodlands and forests of mountains and foothills, often in relatively dry habitat.It is a biennial or perennial herb growing up to about 90 centimeters …Lateral leaflets sessile or subsessile; leaflet apices acute; e North America, Great Plains. Rubus occidentalis: 20 Plants to 3 dm (rarely to 7 dm in R. trivialis, but then falling); stems usually creeping, sometimes erect but low growing, or higher only when using other vegetation for support > 21: 20 Plants 3+ dm; stems erect or arching > 34: 21Sep 27, 2016 · Flora of North America Editorial Committee: Email: Creation date: 27/09/16 00:00: Description: FNA presents in one published reference source, information on the names, taxonomic relationships, continent-wide distributions, and morphological characteristics of all plants native and naturalized found in North America north of Mexico. Publisher name A phylogenetic analysis of western North American Draba (Brassicaceae) based on nuclear ribosomal DNA sequences from the ITS region. Syst. Bot. 28: 584-592. Ekman, E. 1929. Studies in the genus Draba. Svensk Bot. Tidskr. 23: 476-495. Ekman, E. 1930. Contribution to the Draba flora of Greenland. II.Common names: White trillium great white trillium white wake-robin trille grandiflore. Treatment appears in FNA Volume 26. Mentioned on page 99. Rhizomes short, thick, praemorse. Scapes (1–) 2–3 (–many), round in cross-section, 1.5–3+ dm, thick, glabrous. Bracts sessile or subsessile (occasionally weakly cuneate basally); blade dark ...Calyptronoma rivalis (palma de manaca) Calystegia stebbinsii (Stebbins' false bindweed) Camissonia benitensis (San Benito evening primrose) Campanula robinsiae (Brooksville bellflower) Canavalia molokaiensis (puakauhi) Canavalia napaliensis (Mākaha Valley Jack-bean) Cardamine micranthera (small-anthered bittercress)Flora of North America North of Mexico is a synoptic account of the plants of North America north of Mexico: the continental United States of America (including the Florida Keys and Aleutian Islands), Canada, Greenland (Kalâtdlit-Nunât), and St. Pierre and Miquelon. The Flora is intended to serve both as a means of identifying plants within ...In Thalictrum, T. thalictroides is unique in having umbelliform inflorescences and is therefore easy to identify. Based on this one distinction, many botanists still place it in the genus Anemonella. The leaflets, flowers, and fruits, however, are not unlike those of Thalictrum. The Cherokee used infusions prepared from the roots of Thalictrum ...A morphologically based phylogenetic analysis of North American asters was done by Jones and D. A. Young (1983). They identified a group similar to the current Symphyotrichum, but did not segregate it from Aster. G. L. Nesom (1994b, 1997) segregated Symphyotrichum from Aster in a strict sense on a morphologic basis.The Cupressaceae, with a known fossil record extending back to the Jurassic (C. N. Miller Jr. 1988), constitute a diverse family often divided between Cupressaceae in the strict sense (for genera with leaves opposite in four ranks or whorled) and Taxodiaceae (leaves mostly alternate), but they are best kept together (J. E. Eckenwalder 1976; R ...The flora of North America is remarkably rich and interesting, in part because of the continent’s geological history and in part because of its diverse topography and range of climates. The area north of Mexico alone has about 18,600 species of vascular plants.

Species ca. 150 species (34 in the flora): widespread in North America, Mexico, West Indies, South America, including the Galápagos Islands; some species introduced to and naturalized in the Old World. ... Plants small trees or shrubs; fruits barrel-shaped, sometimes stipitate, fleshy or juicy, surfaces reddish to purple with pulp of various ...Claytonia sibirica, the pink purslane, candy flower, Siberian spring beauty or Siberian miner's lettuce, is a flowering plant in the family Montiaceae, native to the Commander Islands (including Bering Island) of Siberia, and western North America from the Aleutian Islands and coastal Alaska south through Haida Gwaii, Vancouver Island, Cascade and …Flora of North America North of Mexico is a synoptic floristic account of the plants of North America north of Mexico: the continental United States of America (including the Florida Keys and Aleutian Islands), Canada, Greenland (Kalâtdlit-Nunât), and St. Pierre and Miquelon. The flora is intended to serve both as a means of identifying ...Common names: White trillium great white trillium white wake-robin trille grandiflore. Basionym: Trillium rhomboideum var. grandiflorum Michaux Fl. Bor.-Amer. 1: 216. 1803 Trillium erythrocarpum Curtis 1805. Treatment appears in FNA Volume 26. Mentioned on page 99. Rhizomes short, thick, praemorse. Scapes (1-)2-3 (-many), round in cross ...Climate and Physiography. Soils. History of the Vegetation: Cretaceous (Maastrichtian)-Tertiary. Paleoclimates, Paleovegetation, and Paleofloras during the Late Quaternary. Vegetation. Phytogeograhy. Taxonomic Botany and Floristics. Weeds. Ethnobotany and Economic Botany.

Discussion. Species 150-250+ (25 in the flora). Within species of Bidens, leaves may be simple, 1-pinnately compound, or 1-3-pinnatisect or -pinnately or -ternately lobed.For compound leaves, leaflets are described; for leaves mostly 1-pinnately lobed, primary lobes are described; for leaves 2-3-pinnatisect or -pinnately lobed, the ultimate lobes are described.Species ca. 140 (33 in the flora): North America, Mexico, Europe, Asia, n Africa; introduced widely worldwide. Most species of Rosa occur in the cooler parts of the northern hemisphere. Only three or four species extend south of the Tropic of Cancer in the Old World, none in the New World. ... North American rose species have contributed ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Plants without elongate rhizomes (occasionally with rhizomes. Possible cause: Nevertheless, as noted by B. L. Turner (1994), plants with intergradient fruits ar.