spinose, not hooded; petals 5, white, yellowish white, or occasionally pink or brownish, clawed or not, blade apex entire, erose, emarginate, or rarely 2-fid;
19 KB (1,194 words) - 10:09, 30 July 2020
present in distal axils, but not subtended by opposite or whorled bracts. Involucre ± actinomorphic, not spurred; glands [0–] (2–) 5, slightly concave, flat
16 KB (581 words) - 18:23, 29 July 2020
longer than achene, seldom smooth; stamens 2–3; styles undivided or shallowly 2-fid, or deeply cleft into 2 (–3) linear stigmatic branches; style base
38 KB (1,253 words) - 01:40, 30 July 2020
staminode 1, scalelike; ovary 2-locular, placentation axile; styles simple or 2-fid; stigma capitate, clavate, linear, 2-lobed, or emarginate. Fruits capsules
12 KB (693 words) - 18:50, 29 July 2020
(1–) 3, distinct or connate basally, usually multifid or laciniate, rarely 2-fid or unbranched, branches threadlike. Fruits capsules, allomorphic fruits achenes
17 KB (923 words) - 18:23, 29 July 2020
shorter than to 2 times longer than achene, retrorsely (to antrorsely) spinulose or sometimes smooth stamens 1–3; styles linear, 2–3-fid, base (tubercle)
13 KB (1,127 words) - 02:15, 30 July 2020
except sometimes on empty proximal scale, apex clearly emarginate to deeply 2-fid, awned. Flowers: perianth present, segments (members) bristlelike and spinulose
4 KB (457 words) - 01:57, 30 July 2020
mutabilis), 6–16, rarely minute or absent (H. denudatus), distinct, undivided, 2-fid or appendaged (H. acetosella, H. aculeatus, H. furcellatus, H. radiatus)
20 KB (1,253 words) - 11:27, 30 July 2020
asymmetric; annulus 2–4-seriate; operculum conic or rostrate from convex-conic base; endostome segments not perforate, cilia in groups of 2–4. North America
9 KB (590 words) - 07:46, 30 July 2020
or procumbent, simple, 2-fid, or with subfloral whorl of branches; pentagonal in cross-section, hyalodermis present, epidermis not prorulose; ± tomentose
12 KB (605 words) - 07:34, 30 July 2020
styles 3 (–4), distinct or connate to 1/2 length, 2-fid [rarely unbranched]. Fruits capsules or drupes. Seeds 2 per locule, rounded-trigonous; seed-coat
16 KB (864 words) - 18:14, 29 July 2020
subtending flower or proximal 1–2 empty. Flowers bisexual; perianth absent; stamens 1–3; styles flattened or subterete, 2–3-fid, base enlarged, deciduous. Achenes
13 KB (547 words) - 01:31, 30 July 2020
triangular, reddish-brown or brown, cleft into 2–3 filiform, terete prongs in the distal half, occasionally 2-fid nearly to the base. Calyptra 4–5-lobed at
13 KB (864 words) - 06:51, 30 July 2020
transversely elliptical along margins, 6–12 (–18) µm wide, papillae usually 2-fid, crowded, 2–6 per lumen, occasionally single and multiplex and covering the lumens
16 KB (1,136 words) - 07:01, 30 July 2020
or obtuse, not hooded; petals (4–) 5 or sometimes absent, white (purple-tinged in C. pumilum and C. regelii), clawed, blade apex 2-fid 1/5–1/2 of length
21 KB (1,044 words) - 10:15, 30 July 2020
sometimes smooth, usually papillose only over lumina, papillae 1 (or 2) per cell, conic, 2-fid, or clavate; marginal cells abruptly shorter than basal. Sexual
11 KB (710 words) - 07:33, 30 July 2020
or obtuse; costa single, ending just before apex, or branched to 2-fid and ending 1/2–9/10 leaf length; alar cells differentiated, rectangular to long-rectangular
9 KB (599 words) - 07:46, 30 July 2020
Involucre ± actinomorphic, not spurred; glands 4–5 (2–3 in E. oblongata), flat or slightly convex; appendages absent or hornlike, 2, slender with attenuate
19 KB (827 words) - 18:28, 29 July 2020
[yellow, yellowbrown, orange, or 2-colored]; nectary extrastaminal, annular and 5-lobed or of 5 glands; stamens [6–] 8 or 10 in 1–2 whorls, distinct or connate
14 KB (637 words) - 18:28, 29 July 2020
or oblong, undivided, 2-fid, or divided, 2–8 (–12) mm, not involucrelike, distal entire to 2-fid, stipulelike, proximalmost not involucrelike, divided
12 KB (722 words) - 11:33, 30 July 2020