represented in America by a single species, A. maritima, a small tree or large shrub of stream banks, marshes, and the shores of shallow lakes. Members
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conic-convex or domed, cells usually in obliquely radial rows. Calyptra large, long-rostrate, cucullate and inflated. Spores smooth or weakly papillose
12 KB (769 words) - 06:47, 30 July 2020
guide cells 2–4 per layer in (1-) 2 layers, hydroid strand present, usually large, abaxial stereid band present, of substereid cells, elliptic or round in
12 KB (806 words) - 07:13, 30 July 2020
World Cirsium species was greatly affected by the events of the Quaternary. Large areas were glaciated and other areas were vastly different during glacial
60 KB (2,205 words) - 13:43, 10 February 2021
columella. Calyptra campanulate, becoming cucullate with age, erose at base, large, covering 1/2 to all of capsule, plicate. North America, South America, Eurasia
8 KB (626 words) - 06:51, 30 July 2020
Mentioned on page 263, 264, 266, 290, 301, 304, 653, 654. Plants small to large, yellow to dark green or blackish. Stems irregularly and often freely branched;
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Volume 28. Treatment on page 259. Mentioned on page 590. Plants usually large, green to golden. Stems creeping, slender, inconspicuous, sympodial, secondary
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on page 554. Mentioned on page 516, 551, 555, 647. Plants very small to large, in loose to dense tufts or mats, green, yellowish, golden, reddish, or brownish
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toothed or entire; seed wings absent or present. > 46 46 Bracteoles ± as large as calyx lobes, nearly surrounding calyces of flowers they subtend. Chelone
26 KB (1,000 words) - 19:24, 29 July 2020
reniform; petals 3, imbricate, free, large, imbricate; staminode a thin ring at base of pistil; pistils 1, large; ovules 3, but usually only 1 ovule fertile;
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grading from small pores at the apex to large pores at the base; concave surface aporose except for a few large pores in the lower side regions. Sexual
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solitary, conduplicate, articulate; blade elliptic to broadly oblanceolate, large, fleshy, leathery, margins entire. Inflorescences axillary, from base of
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coriaceous, smooth, glabrous or minutely puberulent; ribs 5, rounded, often with large, dark, sticky gland near apex, or wings 3–5, coriaceous, hyaline, often between
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usually brochidodromous). (Winter buds usually large, with imbricate scales; floral buds usually larger than vegetative buds.) Inflorescences terminal
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beak 0.2–1 mm, orifice truncate. Stigmas 3. Achenes trigonous, almost as large as bodies of perigynia; style deciduous. North America, Mexico Species 5
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distinct struma; annulus variable, absent, rudimentary, small and adherent or large, 1–3 rows of deciduous, revoluble cells; operculum obliquely high-conic,
21 KB (1,496 words) - 06:56, 30 July 2020
Volume 27. Treatment on page 440. Mentioned on page 663. Plants in small to large cushions, white to pale green, glaucous, grayish or pale-brown. Stems erect
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Treatment appears in FNA Volume 27. Treatment on page 311. Plants medium to large, usually dark green or black with distal portions green. Stems elongate,
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reddish to salmon with color hidden by very thin, light gray layer, usually large and coarse, annulate-ridged (smooth in F. hamatacanthus), longest spines
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stem. Inflorescences terminal, lax to rather dense spicate racemes; bracts large and foliaceous to reduced. Flowers few-to-many, resupinate, pedicellate,
6 KB (409 words) - 05:27, 30 July 2020