Page 3: 350 results for involucre
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Tragopogon: Dichotomous Key
...long; involucre 12–24 mm tall in flower, becoming 19–38 mm tall in fruit; involucral bracts shorter than to equaling the ray flowers in length 1b. Peduncles apically enlarged and fistulou...
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Hypochaeris: Dichotomous Key
...puberulent; involucre 8–10 mm tall during anthesis (elongating to 17 mm in fruit); rays relatively inconspicuous, not much exceeding the involucre (if at all) and ca. 2 times as long as wide; body of ...
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Gamochaeta: Dichotomous Key
Gamochaeta: Dichotomous Key. You are here: Dichotomous Key > Asteraceae > Asteraceae Gro...
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Liatris: Dichotomous Key
...tube; involucre 9–17 mm tall 1b. Capitula ± sessile, with 5–10 (–14) flowers; disk flowers 7–11 mm long, glabrous adaxially; involucre 7–11 mm tall 2a. Outer involucral bract...
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Arctium: Dichotomous Key
...2a. Involucre 15–25 mm wide, the involucral bracts arachnoid-tomentose; corollas minutely glandular-pubescent; petioles, particularly the lower, often hollow 2b. Involucre 25–45 mm wide, ...
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Inula: Dichotomous Key
...wide; involucre 8–12 (–20) mm in diameter; body of cypsela 1.5–2 mm long 1b. Basal and lower stem leaves 10–20 cm broad; rays (10–) 20–30 mm long; disk corollas 7–11 mm long; outer involu...
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Genus: Nabalus (rattlesnake-root)
Genus: Nabalus. rattlesnake-root. You will need to use flowers and fruits for identification, as well as the shape of the lower leaf blades. Do not confuse broken-off pappus bristles for involucra...
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Asteraceae Group 6: Dichotomous Key
...scales; involucre uniseriate, bracts largely connate 7b. Capitula with (0–) 1 ray flower, the ray 0.8–1.2 mm long; pappus of 8 scales that usually are alternately unequal; involucre biser...
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Senecio: Dichotomous Key
...apex; involucre with about 13 principal involucral bracts 4b. Rays absent; involucral bracts with a dark apex, this dark red to red-brown, becoming black [Fig. 450]; involucre with about ...
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Ambrosia: Dichotomous Key
...staminate involucre with 3 evident nerves on one side; carpellate involucre 5–10 mm long in fruit 2b. Plants annual or perennial, 0.2–1 (–2.5) m high; leaves usually opposite below and a...