Page 49: 3,140 results for bract
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Phrymaceae: Dichotomous Key
...3a. Bracts subtending the flowers alternate; basal, connate portion of the calyx not ribbed or winged, much shorter than the lobes 3b. Bracts subtending the flowers opposite [Fig. 763]; b...
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Convolvulaceae: Dichotomous Key
...foliaceous bracts that are positioned near and partly conceal the calyx [Figs. 587, 588]; corolla 20–70 mm long; stigmas obloid 3b. Pedicels subtended by small bracts that are positioned ...
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Section Rostrales: Dichotomous Key
...and bract sheaths concave at the summit; staminate spikes 6–15 mm long; carpellate scales 33–66% as long as the perigynia, not terminated by an awn 1b. Widest leaf blades 6–18 (–21) mm wi...
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Salsola: Dichotomous Key
...reflexed bracts that are not imbricate and ± abruptly narrowed to a spinulose or mucronulate apex; sepals usually with a transverse, membranous wings; fruiting calyx 4–10 mm in diameter 2...
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Eryngium: Dichotomous Key
...1a. Bracts subtending inflorescence relatively short, often not projecting beyond width of inflorescence, mostly entire; leaf blades unlobed, linear to narrow-lanceolate, parallel-veined; inflorescen...
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Asteraceae Group 3: Dichotomous Key
...involucral bracts lacking fringed appendages and tipped by a simple spine 1b. Leaf blades without spiny margins, though spines may occur on other portions of the plant; involucral bracts ...
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Tragopogon: Dichotomous Key
...involucral bracts shorter than to equaling the ray flowers in length 1b. Peduncles apically enlarged and fistulous in flower and fruit [Fig. 473]; cypsela body 25–40 mm long; involucre 2...
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Carduus: Dichotomous Key
...involucral bract appendages 2–7 mm wide; capitula often nodding; peduncles 2–30 cm long 1b. Involucres 10–25 mm wide; involucral bract appendages 0.5–1 mm wide; capitula erect [Fig. 385];...
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Liatris: Dichotomous Key
...involucral bracts obtuse to rounded at apex, erect; axis of capitulescence usually glabrous 2b. Outer involucral bracts acute to short-acuminate at apex, squarrose; axis of capitulescenc...
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Arctium: Dichotomous Key
...involucral bracts arachnoid-tomentose; corollas minutely glandular-pubescent; petioles, particularly the lower, often hollow 2b. Involucre 25–45 mm wide, the involucral bracts glabrous to...