Difference between revisions of "Ambrosia grayi"
Field & Lab. 17: 174. 1949.
Basionym: Gaertneria grayi A. Nelson Bot. Gaz. 34: 35. 1902,
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|name=Gaertneria grayi | |name=Gaertneria grayi | ||
|authority=A. Nelson | |authority=A. Nelson | ||
| + | |rank=species | ||
|publication_title=Bot. Gaz. | |publication_title=Bot. Gaz. | ||
|publication_place=34: 35. 1902, | |publication_place=34: 35. 1902, | ||
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name=Ambrosia grayi | name=Ambrosia grayi | ||
| − | |||
|authority=(A. Nelson) Shinners | |authority=(A. Nelson) Shinners | ||
|rank=species | |rank=species | ||
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|publication year=1949 | |publication year=1949 | ||
|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_21.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae | ||
Revision as of 19:35, 16 December 2019
Perennials, 10–30+ cm. Stems erect. Leaves mostly alternate; petioles 10–45+ mm; blades elliptic to ovate, 45–60(–100+) × 30–45(–75+) mm, usually 1–2-pinnately lobed (lobes ± lanceolate), bases cuneate, ultimate margins serrate, abaxial faces densely sericeous or strigillose (silver or grayish), adaxial faces strigillose. Pistillate heads clustered, proximal to staminates; florets (1–)2. Staminate heads: peduncles 1–2 mm; involucres saucer-shaped, 3.5–5+ mm diam., strigillose; florets 8–25(–40+). Burs: bodies ± pyriform to globose, 3–5+ mm, stipitate-glandular, spines 8–12+, scattered, stoutly conic, 0.5–1+ mm, tips straight. 2n = 36.
Phenology: Flowering Aug–Sep.
Habitat: Wet or seasonally wet flats, depressions, alkaline, clay soils, prairies
Elevation: 600–1200 m
Distribution
Colo., Kans., Nebr., Okla., Tex.
Discussion
Selected References
None.
Lower Taxa
None.