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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capillaire Treatment appears in FNA Volume 25. Plants annual; hirsute or hispid, hairs papillose-based, often bluish or purplish. Culms 15-130 cm, slender
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distally (spreading and branched throughout in C. ramosissima), glabrous or hispid, hispidulous, strigillose, or strigose. Leaves basal and cauline (mostly
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sometimes crenate, surfaces glabrous or hispid to tomentose. Pedicels 1.5–2 mm. Flowers: calyx 7–12 mm, glabrous, hispid, or tomentose, lobes 2, triangular
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hirsute, hispid, or scabrous. Phyllaries 25–45 in 2–3 series, outer reflexed or appressed, apices acuminate to caudate, abaxial faces hispid to scabrous
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deltate to obovate), ultimate margins toothed or entire, faces sparsely hispid (hairs white, coarse) or glabrate, not glanddotted. Heads radiate, borne
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Stems (usually yellowbrown or greenish, sometimes glaucous) erect, glabrous, hispid, ± hirsute, or scabrous. Leaves cauline; all or mostly opposite to mostly
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3-7 × 5-9 mm; achenes 2.6-3.6 (-4.8) × 1.8-3 (-3.2) mm, glabrous, rarely hispid, margin forming narrow rib 0.1-0.2 mm wide; beak persistent, lanceolate
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ovatelanceolate, margins broadly scarious, faces strigose or hirsute to hispid. Receptacles conic, pitted, epaleate. Ray-florets 10–75 (in 1–2 series)
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cm. Stems usually erect, sometimes sprawling or scandent, usually scabro-hispid, sometimes glabrescent. Leaf-blades usually ovate, sometimes deltate or
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drooping, nodes sparsely hispid, hairs papillose-based, internodes glabrous; primary branches to 14 cm, nodes sometimes sparsely hispid, hairs papillose-based
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wide. Panicles of primary culms 7-35 cm, rachises and branches glabrous or hispid, hairs to 3 mm, papillose-based; primary branches 2-8 cm, usually spreading
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ultimate lobes (8-) 10-20 mm wide. Inflorescences 1-flowered; peduncle sparsely hispid or glabrous; involucral-bracts 3, 1-tiered, simple, ±similar to terminal
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rounded, margins entire (revolute), faces scabrous (adaxial) and sparsely hispid-scabrous, glanddotted as well. Heads radiate, borne singly or (2–6) in open
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oblanceolate, margins entire or dentate or deeply lobed (faces glabrous or hispid, hairs simple or minutely 2–3-fid). Heads borne singly or 2–5 in loose,
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serrate apically, rarely entire. Peduncles stipitate-glandular, sometimes hispid as well. Involucres campanulate, (3.5–) 5–8 (–10) mm diam. Ray-florets (10–)
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144, 161, 162. Perennials, 50–200 cm (rhizomatous). Stems erect, scabro-hispid. Leaves mostly basal; opposite, or opposite (proximal) and alternate; petioles
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glabrous; principal blades linear or lance-linear, flat, 5–20 cm, hispid-ciliate, abaxially hispid, pilose, or glabrous, adaxially glabrous to pilose. Inflorescences
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internodes solid. Sheaths open or closed, rounded on the back, frequently hispid; auricles absent; ligules membranous, usually lacerate and minutely ciliate;
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usually erect, branched distally or throughout, glabrous or hairy (sometimes hispid to setose). Leaves basal and cauline or mostly cauline (at flowering); sessile
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basal or basal and cauline, not fasciculate; blade glabrous or strigose to hispid or stipitate-glandular. Inflorescences cymose, open, occasionally with 1
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glabrous; lemmas and paleas subequal, chartaceous to coriaceous, ciliate-hispid or glabrous, tightly clasping along the margins; lemmas 5-veined, obtuse
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broadly ovoid, 2–4 cm, sparsely pubescent. Seeds reniform, sparsely pilose or hispid, hairs sometimes spinelike. Phenology: Flowering Jun–Sep; fruiting Jul–Oct
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decumbent, compressed, sometimes slightly succulent. Sheaths almost glabrous or hispid, hairs papillose-based; ligules membranous, ciliate, cilia 2-4 mm. Panicles
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gradually tapering upward, connate for their whole length. Flowers: receptacle hispid, rarely glabrous; sepals spreading or reflexed, 2-4 × 1-2 mm, glabrous;
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(fibrous-rooted). Stems erect to basally decumbent, puberulent to minutely strigoso-hispid. Leaf-blades ovate to rhombic-lanceolate, 3–8 × 1–3.5 cm, margins toothed
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Copyright: Flora of North America Association Stems erect, never rooting nodally, hispid, base not bulbous. Roots never tuberous. Basal leaf-blades broadly cordate
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glabrous or coarsely hispid. Leaves: blades oblanceolate to oblong, 2–15 × 0.5–2.5 cm, margins entire, dentate, or deeply lobed, faces hispid or hirsute, hairs
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America Association Herbs, erect to sprawling, to 0.4 m. Young stem ribbed, hispid. Leaves: petiole 0.1-0.8 cm. Leaf-blade ovate, 7-12 × 3-6 cm, base sagittate
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Wilson-Ramsey Copyright: Flora of North America Association Annuals; hirsute-hispid throughout. Stems unbranched or branched distally, 1.2–6 dm. Basal leaves
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purple, elliptic to narrowly ovate, 4–5 × 2–2.5 cm; filaments ca. 2.6 cm, hispid or slightly papillose; anthers ca. 3.5 mm; pistil light green, ca. 3.6 cm;
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