Difference between revisions of "Ambrosia psilostachya"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 526. 1836.
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{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Ambrosia psilostachya | |accepted_name=Ambrosia psilostachya | ||
− | |accepted_authority= | + | |accepted_authority=de Candolle |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | |title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | ||
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|name=Ambrosia psilostachya var. californica | |name=Ambrosia psilostachya var. californica | ||
|authority=(Rydberg) S. F. Blake | |authority=(Rydberg) S. F. Blake | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ambrosia psilostachya var. coronopifolia | |name=Ambrosia psilostachya var. coronopifolia | ||
|authority=(Torrey & A. Gray) Farwell | |authority=(Torrey & A. Gray) Farwell | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ambrosia psilostachya var. lindheimeriana | |name=Ambrosia psilostachya var. lindheimeriana | ||
|authority=(Scheele) Blankinship | |authority=(Scheele) Blankinship | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Ambrosia rugelii | |name=Ambrosia rugelii | ||
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+ | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Ambrosia;Ambrosia psilostachya | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Ambrosia;Ambrosia psilostachya | ||
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name=Ambrosia psilostachya | name=Ambrosia psilostachya | ||
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|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1836 | |publication year=1836 | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_25.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae |
Latest revision as of 21:10, 5 November 2020
Perennials, 10–60(–100+) cm. Stems erect. Leaves proximally opposite, distally alternate; petioles 0–25 mm (often ± winged); blades deltate to lanceolate, 20–60(–140) × 8–35(–50+) mm, pinnately toothed to 1-pinnately lobed, bases cuneate to truncate, ultimate margins entire or toothed, abaxial and adaxial faces hirsutulous to strigose and gland-dotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5–2 mm; involucres obliquely cup-shaped, 2–4(–5) mm diam., hirsutulous; florets 5–15(–30+). Burs: bodies ± obpyramidal to globose, 2–3 mm, hirsutulous, spines or tubercles 0 or 1–6, mostly distal, stoutly conic to acerose, (0.1–)0.5–1 mm, tips straight. 2n = 18, 27, 36, 45, 54, 63, 72, 100–104, 108, 144.
Phenology: Flowering Jul–Oct(–Dec).
Habitat: Disturbed sites, often wet, alkaline, clay soils
Elevation: 0–2200 m
Distribution
Alta., B.C., Man., N.S., Ont., P.E.I., Que., Sask., Ala., Ariz., Ark., Calif., Colo., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., La., Maine, Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., S.C., S.Dak., Tenn., Tex., Utah, Vt., Wash., Wis., Wyo., Mexico (Baja California, Chihuahua, Coahuila).
Discussion
Hybrids between Ambrosia psilostachya and A. artemisiifolia have been called A. ×intergradiens W. H. Wagner. Some botanists consider the type of A. cumanensis Kunth (1818) to be conspecific with that of A. psilostachya.
Selected References
None.