Bidens heterodoxa (Fernald) Fernald & H. St. John (Q2564)
Bidens heterodoxa is a taxon with the rank species within the genus Bidens
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Bidens heterodoxa (Fernald) Fernald & H. St. John
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Bidens heterodoxa is a taxon with the rank species within the genus Bidens
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Statements
taxon/id/Bidens heterodoxa (Fernald) Fernald & H. St.John
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Bidens heterodoxa (Fernald) Fernald & H. St.John
Bidens heterodoxa
(Fernald) Fernald & H. St.John
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-NB
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CA-NS
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CA-PE
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Catling, P.M., D.S. Erskine & R.B. MacLaren. 1985. The Plants of Prince Edward Island with new records, nomenclatural changes, and corrections and deletions. Agriculture Canada, Research Branch, Ottawa. Publication 1798. 272 pp.
CA-QC
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Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.
CA-NB
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CA-PE
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CA-QC
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US-CT
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Leaves: petioles (narrowly, if at all, winged) 5–20 (–35+) mm;
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blades lanceolate to lance-linear, (20–) 30–50 (–80+) × (3–) 6–20 (–30+) mm, sometimes laciniately 1-pinnatisect with 2–4+ lobes near bases, bases cuneate, margins incised to serrate, seldom ciliate, apices acute to attenuate, faces glabrous.
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Heads borne singly or in 2s or 3s.
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Peduncles 10–35 (–55) mm.
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Calyculi of (2–) 3–5 (–7) ± erect, oblanceolate or spatulate to linear, ± foliaceous bractlets or bracts (6–) 10–25 (–40+) mm, margins rarely ciliate, abaxial faces usually glabrous, sometimes sparsely hispidulous.
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Involucres usually obconic to broadly campanulate, rarely hemispheric, (4–) 6–7 × (4–) 5–7 mm.
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Phyllaries (4–) 5–8,oblong to lanceovate, (4–) 5–8+ mm.
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Ray-florets usually 0, sometimes 1–3+;
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laminae orange yellowish, 2–5 (–10) mm.
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Disc-florets (7–) 20–70+;
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corollas yellowish, 2.5–3.5 mm.
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Cypselae: outer redbrown, ± flattened, sometimes 3–4-angled, broadly cuneate, 4–5 (–6) mm, inner blackish, narrowly cuneate, (5–) 6–7 (–8+) mm, margins glabrous or sparsely antrorsely strigillose,apices ± truncate to convex, faces ± 1-nerved, glabrous or sparsely setulose, usually smooth, sometimes ± tuberculate;
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pappi 0, or of 2 (–4) spreading to divergent, antrorsely or retrorsely barbed awns (0.1–) 1–3.5+ mm.
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1-pinnatisect
sometimes laciniately
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hispidulous
sometimes sparsely
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usually obconic
broadly campanulate
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tuberculate
sometimes more or less
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