Helianthus petiolaris Nuttall (Q2768)
Helianthus petiolaris is a taxon with the rank species within the genus Helianthus
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Helianthus petiolaris Nuttall
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Helianthus petiolaris is a taxon with the rank species within the genus Helianthus
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Statements
taxon/id/Helianthus petiolaris Nuttall
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Helianthus petiolaris Nuttall
Helianthus petiolaris
Nuttall
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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CA-AB
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CA-MB
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CA-ON
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CA-SK
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US-AZ
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US-AR
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US-CA
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US-CO
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US-CT
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US-DC
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US-DE
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US-ID
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US-IL
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US-IN
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US-IA
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US-KS
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US-LA
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US-ME
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US-MA
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US-MI
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US-MN
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US-MO
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US-MT
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US-NC
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US-ND
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US-NJ
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US-NM
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US-NY
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US-NE
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US-NV
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US-OH
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US-OK
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US-OR
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US-PA
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US-SC
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US-SD
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US-TN
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US-TX
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US-UT
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US-VA
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US-WV
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US-WA
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US-WI
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US-WY
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Stems erect, usually densely canescent, hispid, or strigillose, rarely ± hirsute or glabrate.
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Leaves mostly cauline;
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blades (often bluish green) lanceolate to deltate-ovate or ovate, 4–15 × 1–8 cm, bases subcordate or truncate to cuneate, margins entire or ± serrate, abaxial faces strigose, sparsely to densely, or not at all, glanddotted.
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Peduncles 4–15 (–40) cm.
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Involucres ± hemispheric, 10–24 mm diam.
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Phyllaries 14–25, lance-linear to lanceolate to lanceovate, 10–14 × 1–4 (–5) mm, (margins sometimes ciliate) apices short-attenuate, abaxial faces usually hispidulous, rarely sparsely hirsute to glabrate.
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Paleae 4.5–7.5 mm, 3-toothed, middle teeth ± ciliate or bearded, hairs whitish, 0.5–0.7 mm.
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Ray-florets 10–30;
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laminae 15–20 mm.
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Disc-florets 50–100+;
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corollas 4.5–6 mm, lobes usually reddish, rarely yellow;
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anthers reddish to purplish, appendages purplish (style-branches reddish).
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Cypselae 3–4.5 mm, ± villous;
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pappi of 2 aristate scales 1.5–3 mm plus 0–2 erose scales 0.3–0.5 mm. 2n = 34.
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lanceolate
deltate-ovate or ovate
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rarely sparsely hirsute
glabrate
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