Did you know?

Bromus. Treatment appears in FNA Volume 24. Treatment on page 193. Plants perennial, annual, or biennial; usually cespitose, sometimes rhizomatous. Culms 5-190 cm. Sheaths closed to near the top, usually pubescent; auricles sometimes present; ligules membranous, to 6 mm, usually erose or lacerate; blades usually flat, rarely involute.This treatment of Crataegus is the first attempted for the whole flora area since the work of J. Torrey and A. Gray (1838-1843). It is mainly conservatively based on E. J. Palmer (1950, 1952, 1960), except for series Apricae and Lacrimatae, and new species, mainly western, not known to Palmer. The taxonomic complexity of North American ...without the prior written permission of the Flora of North America Association. Library of Congress Cataloging-in-Publication Data (Revised for Volume 7) Flora of North America North of Mexico edited by Flora of North America Editorial Committee. Includes bibliographical references and indexes. Contents: v. 1. Introduction—v. 2.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 ...Halesia J. Ellis ex Linnaeus, Syst. Nat. ed. 10. 2: 1041, 1044, 1369. 1759. Silverbell, snowdrop tree [For Stephen Hales, 1677-1761, English botanist] Shrubs or trees: pith chambered [continuous]; winter buds with scales; fertile shoots of current growing season without fully developed leaves (rarely fully developed in H. diptera ).The Flora of North America North of Mexico is a multivolume work describing the native plants and naturalized plants of North America, including the United States, Canada, St. Pierre and Miquelon, and Greenland. It includes bryophytes and vascular plants. All taxa are described and included in dichotomous keys, distributions of all species and infraspecific taxa are mapped, and about 20% of ...Flora of North America : Taxon Id: Name : Volume: 233501079: Quercus rubra : FNA Vol. 3: eFlora Home | People Search | Help | ActKey | Hu Cards | Glossary |The Biota of North America Program. North American Vascular Flora . ... North American Plant Atlas . Customized Geographic. Database Page . BONAP Botanical Garden . Optimal Browsers for Viewing : North American Plant Atlas (NAPA) U.S. County-Level Distributions: Species/Generic Maps -List ...Species 32 (15 in the flora). None of the North American species occurs in South America except for the pantropical weeds Argemone mexicana and, probably, A. ochroleuca. Argemone glauca is endemic to Hawaii. Three suffrutescent, perennial species are known from Mexico in Coahuila (A. fruticosa) and Chihuahua (A. turnerae, A. ownbeyana).Hickory is a common name for trees composing the genus Carya, which includes around 18 species. Five or six species are native to China, Indochina, and India (), as many as twelve are native to the United States, four are found in Mexico, and two to four are native to Canada. A number of hickory species are used for products like edible nuts or wood. . …Species 43 (38 in the flora): North America, Asia. Trillium is traditionally divided into two subgenera, which overlap in some characters. Botanists consider subg. Trillium to be the more primitive group, because the genera considered closest to Trillium all have pedicellate flowers, as does subg.Species ca. 50 (2 in the flora). Although the taxonomy of Rhinanthus in the Old World is complex, the taxa found in North America are reasonably distinct. The subapical teeth on the adaxial corolla lip have been described as galea or nipples; the term teeth is used in this account.North America is home to an incredible variety of birds, with over 800 species of birds living in the continent. From the majestic Bald Eagle to the tiny hummingbird, North America is a bird-lover’s paradise.Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) is a genus comprising about 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. Except for three South American species, the species of Helianthus are native to North America and Central America.The best-known species is the common sunflower …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.Herbs and subshrubs, annual or perennial, glabrous or densely tomentose-sericeous. Stems erect, ascending, or prostrate, simple or branched, not jointed, not armed, not fleshy; branches alternate [proximal sometimes almost opposite]. Leaves alternate [rarely proximal almost opposite], sessile (sometimes narrowed into pseudopetiole); blade obovate-lanceolate, lanceolate, linear, or filiform ...Category:Flora of North America. Category. : Flora of North America. This category is located at Category:Flora of Northern America. Note: This category should be empty. See the instructions for more information. There are no pages or files in this category. This list may not reflect recent changes ( learn more ). Plantago aristata is a species of plantain known by the common name bracted plantain [1] or largebracted plantain. [2] It is native to the eastern and central United States, and it can be found in other parts of North America as well as parts of Eurasia as an introduced species. It grows in many types of habitat, including disturbed areas ...Panicles usually 1-1.5 cm wide, erect; callus hairs shorter than 0.5 mm; rachilla hairs up to 1 mm long; plants of western North America Trisetum wolfii: 3 Lemmas with evident awns 3-14 mm long, these straight, curved, flexuous, or geniculate, exceeding the lemma apices. > 4: 5 Plants rhizomatous; culms usually solitary. > 6: 6Herbs or small shrubs [lianas, trees], herbs annual or rhizomatous perennial, usually pubescent, sometimes with stinging hairs, deciduous. Leaves opposite or alternate and spirally arranged, simple; stipules present or absent; petioles present. Leaf-blades paired, equal in size (except in Pilea, which may have unequally paired leaves), dotted with linear or rounded marks formed by cystoliths ...0 references. Wikidata property example. Orchidaceae. Flora of North America taxon ID. 10638. 0 references. Sphagnum fuscum. Flora of North America taxon ID. 200000804.

Visit this flora’s website Northern America Vascular Plants of the Americas WFO Status: not yet imported The Vascular Plants of the Americas (VPA) website contains the first integrated assessment of all known native species of vascular plants in the New World. It includes 128,716 species in 6,227 genera, and 355 families (Jan. 2019).Species 14 (9 in the flora): mostly N tempnorth temperate, some circumboreal, North America, a few s to Mexico, e Asia, Pacific Islands (New Zealand), and Australia. The plants flower in late spring to late summer, and the flowering season is shorter northward and at higher elevations. Species 52, including 1 hybrid (52 in the flora): North America, Mexico; introduced in the Old World. The identification of sunflower species has long been problematic. C. B. Heiser et al. (1969) felt that the greatest contribution of their sustained efforts to understand sunflower taxonomy was not providing an easy way to identify sunflowers ...North American Wildland Plants - Stubbendieck et al. Range Plant Handbook - USDA Forest Service Weeds of the West - Tom D. Whitson Flora of the San Juans: A field guide to the mountain plants of southwestern Colorado, Susan Komarek, ... 1000 Weeds of North America, Old, 2013 Flora of the Wasatch, High Country Apps, 2015 Virginia Tech Tree …16. Anthers 0.5-2 mm long; paleas 0.3-0.7 mm long, to about 1/3 the length of the lemmas; lemmas usually with teeth to 0.3 mm long. Agrostis densiflora. 9. Panicles open or diffuse, or somewhat contracted but not spikelike, 0.4-20 cm wide; lower branches 1.5-12 cm long, erect to spreading, readily visible. > 10.

Bromus. Treatment appears in FNA Volume 24. Treatment on page 193. Plants perennial, annual, or biennial; usually cespitose, sometimes rhizomatous. Culms 5-190 cm. Sheaths closed to near the top, usually pubescent; auricles sometimes present; ligules membranous, to 6 mm, usually erose or lacerate; blades usually flat, rarely involute.Rubus flagellaris is extremely polymorphic, ranging from plants with low-arching (and later creeping) stems and relatively few prickles to low, creeping plants with abundant prickles. Individual plants in some years will produce abundant, arching, poorly armed stems, and in others creeping, well-armed stems. Prickle shape also varies in these ...Plants terrestrial. Stems decumbent to erect, stolons absent. Leaves monomorphic (dimorphic in P. acrostichoides), evergreen. Petiole 1/9-1 times length of blade, bases swollen or not; vascular-bundles more than 3, arranged in an arc, ± round in cross-section. Blade linear-lanceolate to broadly lanceolate, 1-3-pinnate, gradually reduced distally to pinnatifid apex, somewhat leathery to ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Species ca. 30 (8 in the flora): worldwide, mostl. Possible cause: The Flora of North America North of Mexico (usually referred to as FNA) is a mul.