apex acuminate to rounded. Flowers: receptacle hispid; sepals spreading or reflexed, 4-10 × 2-5 mm, hispid; petals 5, yellow, 8-16 × 3-9 mm. Heads of achenes
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ovate, rhombic, or rhombic-ovate, margins entire (often revolute), faces hispid or strigose to stigillose, sometimes glanddotted. Heads radiate, borne singly
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(± papillose distally). Cypselae prismatic, ca. 10-ribbed, scabrellous to hispid-strigose, sometimes glanddotted; pappi persistent, of 35–40, barbellulate
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216. Herbs or subshrubs, annual or perennial. Stems erect, puberulent or hispid, not viscid. Leaves: stipules persistent, filiform; blade broadly ovate
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appears in FNA Volume 25. Treatment on page 460. Plants annual; glabrous or hispid, hairs papillose-based. Culms 11-110 cm, erect to decumbent; nodes shortly
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ray-floret proximally, abaxially with pit-gland-tipped processes and glabrous or hispid, hispidulous, puberulent, and/or sessile or stipitate-glandular). Receptacles
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Copyright: Flora of North America Association Stems hispid, with stinging hairs. Leaf-blades abaxially hispid, both surfaces with stinging hairs. Flowers unisexual
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Mentioned on page 217. Herbs or subshrubs, annual. Stems erect to decumbent, hispid or stellate-hairy to glabrescent. Leaves: stipules deciduous, inconspicuous
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annual, or subshrubs [shrubs and small trees], glabrous, or ± pubescent or hispid. Stems erect, ascending, or prostrate, branched (rarely simple), not jointed
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terete, in cross section. > 4 4 Body of perigynium pubsescent, scabrous, hispid, or sometimes papillose, papillae longer than wide Key D 4 Body of perigynium
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rounded to narrowly acute. Flowers: receptacle hispid; sepals reflexed 1-2 mm above base, 5-11 × 2-4 mm, hispid, hirsute, or glabrous; petals 5-6, abaxially
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faces hispid, scabrous, or glabrous. Phyllaries 17–37 in 2–3 series, outer appressed, apices acute to acuminate, abaxial faces glabrous, hispid, pilose
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on page 226, 233, 244, 419. Annuals; not scapose; glabrous, hirsute, or hispid, (trichomes often retrorse). Stems erect, branched [unbranched]. Leaves
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taproot. Stems erect, unbranched or branched, 30–70 (–100) cm, sparsely hispid, occasionally densely so at distal nodes. Leaves opposite; stipules (0–)
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North America Association Stems (0.8–) 1–10 dm, usually sparsely to densely hispid basally, rarely glabrous, trichomes 0.5–3.6 mm. Basal leaves long-petiolate;
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ultimate margins entire or toothed, faces hirsute, hispid, pilose, puberulent, scabrous, or scabro-hispid [sericeous], often glanddotted or ± stipitate-glandular
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to globose, 3-7 × 4-8 mm; achenes 1.6-2.8 × 1.2-2 mm, glabrous or rarely hispid; beak lance-subulate, straight or weakly curved, 0.4-1.2 mm. Generated Map
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midribs) narrowly oblong to linear, bases ± cuneate, margins entire, faces hispid to scabrous, glabrescent (then usually roughened by persistent hair-bases)
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lanceolate, lanceovate, or ovate, margins entire or toothed to laciniate, faces hispid, sericeous, or strigillose, often resinous or glanddotted. Heads radiate
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82. Plants caulescent, 30–250 cm; fibrous-rooted. Stems terete, scabrous, hispid, or hirsute. Leaves: basal persistent or caducous, petiolate; cauline alternate
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