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  • series (reflexed in fruit, usually distinct, oblanceolate, lanceolate, narrowly triangular, or linear, subequal to unequal, usually chartaceous proximally
    12 KB (725 words) - 22:34, 29 July 2020
  • 20–100+, bisexual; corollas white [pale to bright-yellow], tubes shorter than narrowly funnelform to cylindric throats, lobes 5, ± deltate (anther sacs black;
    9 KB (705 words) - 23:11, 29 July 2020
  • toothed (teeth sometimes bristly); heads usually in spiciform, racemiform, narrowly paniculiform, or corymbiform arrays, rarely borne singly;phyllaries not
    79 KB (1,886 words) - 20:55, 29 July 2020
  • yellow to orange, tubes shorter than narrowly funnelform throats, lobes 5, deltate. Cypselae ± compressed, ± obpyramidal, ± 3-angled, sericeous to strigillose;
    6 KB (541 words) - 23:21, 29 July 2020
  • also loculicidal. Seeds ca. 200, yellow to brown or black, oblong to obpyramidal or short-cylindric, wings absent. × = 9. North America, Mexico, Central
    12 KB (470 words) - 19:19, 29 July 2020
  • tubes shorter than campanulate or narrowly funnelform throats, lobes 5, deltate. Cypselae (blackish, dull) obpyramidal to clavate, ± scabrellous to glabrate;
    7 KB (595 words) - 23:57, 29 July 2020
  • 14–25+, bisexual, fertile; corollas yellow, tubes longer than to equaling narrowly funnelform throats, lobes 5, recurved, lance-linear; style-branches: stigmatic
    7 KB (421 words) - 21:23, 29 July 2020
  • lance-linear. Cypselae obpyramidal, 4–5-angled, faces ribbed and sparsely hairy (hairs straight); pappi persistent, of 12–18 narrowly lanceolate to subulate
    7 KB (564 words) - 00:02, 30 July 2020
  • tubes shorter than narrowly cylindric throats, lobes 5, deltate (equal, papillate abaxially). Cypselae cylindric to clavate or obpyramidal, sometimes weakly
    9 KB (648 words) - 22:40, 29 July 2020
  • globose-cylindric, or obpyramidal with (2–)5–15-flowered lateral dichasia proximally; capsules 5–7 mm > 21 20 Leaf blades 30–70 mm, narrowly oblong to narrowly elliptic-oblanceolate;
    13 KB (445 words) - 11:15, 30 July 2020
  • flattened or narrowly winged, 0.2–6 cm; blade narrowly oblong or elliptic to ovate, broadly obovate, or orbiculate, (0.4–) 1–10 × 0.4–4 cm, base narrowly cuneate
    13 KB (1,003 words) - 21:01, 7 June 2022
  • cylindric-campanulate throats, lobes 5, ± deltate. Cypselae obconic or obpyramidal, glabrous or hairy; pappi 0, or persistent, of 2–11 (–15) usually aristate
    15 KB (1,046 words) - 22:37, 29 July 2020
  • zygomorphic), tubes much shorter than narrowly funnelform throats, lobes 5, ovate to deltate (equal or unequal). Cypselae obpyramidal, glabrous or shaggily hairy;
    6 KB (509 words) - 22:34, 29 July 2020
  • cm wide, apex narrowly acute, surfaces not farinose, glaucous at least when young. Inflorescences: cyme (red), 2–3-branched, obpyramidal; branches not
    6 KB (589 words) - 13:01, 30 July 2020
  • corollas yellow, tubes shorter than narrowly campanulate throats, lobes 5, triangular. Cypselae (purplish black) obpyramidal, slightly compressed; pappi 0,
    6 KB (532 words) - 23:09, 29 July 2020
  • (midcauline) 3-lobed or 5-lobed or foliolate; blades or leaflets broadly to narrowly oblong to ovate, ultimate margins entire, faces sparsely to moderately
    7 KB (567 words) - 00:02, 30 July 2020
  • lanceolate-elliptic or very narrowly elliptic to linear, sometimes to oblanceolate or oblanceolate-elliptic near base, 1.8–10 × 0.2–1.3 (–2) cm, base narrowly cuneate or
    11 KB (932 words) - 21:01, 7 June 2022
  • filament length. Capsules exserted, chestnut-brown, 1-locular, narrowly obpyriform to narrowly ovoid, 2.4–2.9 mm, apex acute, valves separating at dehiscence
    6 KB (439 words) - 00:52, 30 July 2020
  • 1 Involucres narrowly cylindric, (1–)2–3 mm diam.; phyllaries 4 or 5(–6) in ± 1–2 series; florets 4 or 5(–6) > 2 1 Involucres campanulate, cylindric, ellipsoid
    17 KB (728 words) - 22:41, 29 July 2020
  • spiny-toothed Ambrosia ilicifolia 5 Leaves: petioles 10–35 mm, blades lanceolate to narrowly triangular, margins coarsely toothed (not spiny) Ambrosia ambrosioides
    16 KB (728 words) - 23:11, 29 July 2020

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