Difference between revisions of "Bidens aristosa"
Bull Torrey Bot. Club 20: 281. 1893.
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|name=Coreopsis aristosa | |name=Coreopsis aristosa | ||
|authority=Michaux | |authority=Michaux | ||
| + | |rank=species | ||
|publication_title=Fl. Bor.-Amer. | |publication_title=Fl. Bor.-Amer. | ||
|publication_place=2: 140. 1803 | |publication_place=2: 140. 1803 | ||
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|name=Bidens aristosa var. fritcheyi | |name=Bidens aristosa var. fritcheyi | ||
|authority=Fernald | |authority=Fernald | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Bidens aristosa var. mutica | |name=Bidens aristosa var. mutica | ||
|authority=(A. Gray) Gattinger ex Fernald | |authority=(A. Gray) Gattinger ex Fernald | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens aristosa | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens aristosa | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Bidens aristosa | name=Bidens aristosa | ||
| − | |||
|authority=(Michaux) Britton | |authority=(Michaux) Britton | ||
|rank=species | |rank=species | ||
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|publication year=1893 | |publication year=1893 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_520.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | ||
Revision as of 20:37, 16 December 2019
Annuals, (15–)30–60(–150) cm. Leaves: petioles 10–30 mm; blades lanceolate to lance-linear overall, 30–80(–150) × 10–30(–50) mm, usually laciniately pinnatisect, primary lobes 3–7+, 15–60+ × 2–20 mm, bases cuneate, ultimate margins laciniate to serrate, ciliate, apices acuminate, faces glabrous or sparsely scabrellous. Heads in ± corymbiform arrays. Peduncles (10–)30–80+ mm. Calyculi of 8–12(–16) usually spreading to reflexed, linear, seldom foliaceous bractlets (4–)5–7(–12) mm, margins entire, ciliate, abaxial faces glabrous or ± scabrellous. Involucres ± hemispheric or broader, 6–8(–12) × 10–15 mm. Phyllaries 7–8(–13), lance-ovate to lance-linear, 6–8(–12) mm. Ray florets (5–)8–10+; laminae yellow, 10–25 mm. Disc florets (12–)20–40+; corollas yellowish, 2–3+ mm. Cypselae red-brown to blackish, ± flattened (unequally 3–4-angled), broadly cuneate, outer (4–)5–6 mm, inner 5–7 mm (lengths mostly 1.5–2.5 times widths), margins (± corky-winged) patently to antrorsely barbed, apices truncate to concave, faces weakly striate, sometimes tuberculate, glabrous or sparsely strigillose; pappi 0, or of 2(–4) spreading to divergent, antrorsely or retrorsely barbed awns (0.5–)2–4(–6) mm.
Phenology: Flowering Aug–Oct(–Nov).
Habitat: Marshes, meadows, pine forests, disturbed sites
Elevation: 0–300 m
Distribution
Ont., Ala., Ark., D.C., Ill., Ind., Ky., La., Md., Mich., Minn., Mo., N.C., S.C., Tenn., Tex., Va.
Discussion
Selected References
None.