Page 9: 350 results for involucre
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Eupatorium: Dichotomous Key
...4a. Involucre 8–11 mm tall; involucral bracts glabrous abaxially or sparsely pubescent near the base 4b. Involucre 4–7 mm tall; involucral bracts moderately to densely pubescent over the ...
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Question: I am confused by a posted sighting of White Snakeroot: "Sighting: Ageratina …
Question: I am confused by a posted sighting of White Snakeroot: "Sighting: Ageratina altissima at 42.2875, -71.82444 by Levin1 on October 16 2016" In Newcomb's wildflower guide p.436, ...
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Vernonia: Dichotomous Key
Vernonia: Dichotomous Key. You are here: Dichotomous Key > Asteraceae > Asteraceae Group...
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Achillea: Dichotomous Key
Achillea: Dichotomous Key. You are here: Dichotomous Key > Asteraceae > Asteraceae Group...
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Packera: Dichotomous Key
Packera: Dichotomous Key. You are here: Dichotomous Key > Asteraceae > Asteraceae Group ...
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Corylus: Dichotomous Key
...Husk-like involucre 4–7 cm long, with a pronounced, tubular beak, bristly with slender spicules; branchlets without red, stipitate glands; staminate aments sessile or on very short peduncles up to 1 m...
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Gentiana: Dichotomous Key
Gentiana: Dichotomous Key. You are here: Dichotomous Key > Gentianaceae > Gentiana. Gentiana. ...
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Mirabilis: Dichotomous Key
...1a. Involucres 1-flowered, cup-shaped, not accrescent in fruit; calyx salverform, with a prolonged, tubular, connate portion 20–30 mm long 1b. Involucres 3- to 5-flowered, broad and open,...
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Eupatorium album (white thoroughwort)
... involucre 4–7 mm tall, with abaxially moderately to densely pubescent involucral bracts (vs. E. album, with the involucre 8–11 mm tall, with abaxially glabrous or sparsely pubescent invol...
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Question: I'm trying to decide whether this Solidago is altissima or canadensis. I …
...the involucres and disk flowers are the real definitive characters. Best wishes.