(2–) 20–500 cm. Leaves usually mostly cauline, rarely mostly basal; mostly opposite (distal often alternate) or mostly alternate, rarely whorled; petiolate
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in ± 2 series (usually distinct, rarely connate ± 1/10 their lengths, mostly oblong to linear, ± membranous, margins ± scarious). Receptacles flat to convex
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usually glabrous, sometimes stipitate-glandular (mostly distally). Leaves basal and cauline or mostly cauline; basal usually petiolate (petioles usually
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intergrading with distal peduncular bracts, mostly 1/5–1/2+ times phyllaries), sometimes 0. Involucres mostly cylindric or turbinate to campanulate, 5–15
30 KB (1,295 words) - 21:10, 29 July 2020
Leaves mostly basal or mostly cauline; usually opposite (distal sometimes alternate); petiolate or sessile; blades (often 3-nerved or 5-nerved) mostly deltate
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series and orbiculate to oblong, lance-oblong, lanceolate, or linear, unequal, or (with calyculi) 12–25+ in 2–3 series and oblong or lanceolate to linear
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usually distinct, sometimes connate 0.05–0.1 their lengths, mostly oblong or ovate to lance-oblong, chartaceous to membranous or scarious (usually striate
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mm diam. Phyllaries persistent, 4–6 in 1–2 series, erect, distinct, mostly oblong to ovate or lanceolate, equal or subequal, margins obscurely scarious
10 KB (537 words) - 21:25, 29 July 2020
5–13 [–20] mm diam. Phyllaries persistent, mostly 21–35+ in 3–5 series, distinct, deltate to lanceolate, oblong, or elliptic, unequal, margins and apices
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petiolate; blades deltate to ovate or oblong (in broad outline), usually 1–2-ternately lobed (lobes mostly oblong to obovate), ultimate margins entire or
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5–7 mm. Peduncles 0 or very rarely 1–2 mm. Phyllaries in 3–6 series, mostly oblong-obovate, unequal, essentially glabrous, margins without hyaline borders
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distinct, erect, mostly oblong or ovate, equal, membranous. Receptacles concave to flat, paleate; paleae similar to phyllaries, oblong or oval to lanceolate
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10–34+, pistillate, fertile; corollas white [seldom pinkish], laminae mostly oblong. Disc-florets 300–500, bisexual, fertile; corollas yellow [greenish]
10 KB (898 words) - 20:53, 29 July 2020
America Association Annuals or perennials, 3–6 dm. Phyllaries (8–) 12–16, mostly oblong to ovate or obovate. Rays 0. Disc-florets 15–30; corollas white or pinkish
4 KB (559 words) - 00:02, 30 July 2020
and proximal cauline) or sessile (distal); blades (pinnately nerved) mostly oblong to lanceolate, usually 1 (–2) -pinnately lobed, bases ± cuneate, ultimate
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Involucres cylindric, 11–15 × 4–7 mm. Phyllaries in 3–4 series, mostly oblong to oblong-oblanceolate, unequal, essentially glabrous, margins with hyaline
7 KB (645 words) - 22:54, 29 July 2020
1–2 series, erect, distinct (margins interlocking) [connate at bases], mostly oblong or lanceolate to linear, subequal, margins usually ± scarious (tips greenish
7 KB (484 words) - 21:22, 29 July 2020
Trophophores ascending to perpendicular to stem, sessile or stalked; blades linear, oblong, or deltate, simple to 5-pinnate, 4–25 × 1–35 cm. Pinnae (reduced to segments
19 KB (579 words) - 15:29, 15 December 2020
Treatment appears in FNA Volume 21. Treatment on page 479. Leaf-blades mostly oblong to oblong-lanceolate, bases cordate to truncate (often subauriculate), margins
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rostellum lobes mostly parallel to slightly diverging, directed downward, minute, obscure; pollinia remaining enclosed in anther sacs; viscidia mostly quadrangular
7 KB (533 words) - 05:25, 30 July 2020