Difference between revisions of "Hymenoxys rusbyi"
Bull. Torrey Bot. Club 31: 496. 1904.
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|common_names=Rusby’s rubberweed or bitterweed | |common_names=Rusby’s rubberweed or bitterweed | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Actinella rusbyi | |name=Actinella rusbyi | ||
|authority=A. Gray | |authority=A. Gray | ||
| + | |rank=species | ||
|publication_title=Proc. Amer. Acad. Arts | |publication_title=Proc. Amer. Acad. Arts | ||
|publication_place=19: 33. 1883 | |publication_place=19: 33. 1883 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Hymenoxys rusbyi | name=Hymenoxys rusbyi | ||
| − | |||
|authority=(A. Gray) Cockerell | |authority=(A. Gray) Cockerell | ||
|rank=species | |rank=species | ||
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|publication title=Bull. Torrey Bot. Club | |publication title=Bull. Torrey Bot. Club | ||
|publication year=1904 | |publication year=1904 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_1111.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | ||
Latest revision as of 20:08, 5 November 2020
Perennials, 30–150 cm (polycarpic, often with moderately branched, woody caudices). Stems 1–5(–15), usually purple-red-tinted proximally, branched distally, glabrous or ± hairy. Leaves: blades simple or lobed (lobes 3), glabrous, gland-dotted; mid leaves simple or lobed (lobes 3, terminal lobes 2–4 mm wide). Heads 50–250+ per plant, in corymbiform arrays. Peduncles 1–3.2 cm, glabrous or ± hairy. Involucres campanulate to urceolate, 6–8 × 6–7 mm. Phyllaries in 2 series, unequal; outer 7–9, basally connate 1/4–1/3 their lengths, lanceolate, 4.5–6 mm, apices usually rounded; inner 7–11, obovate, 3.5–4.5 mm, apices mucronate. Ray florets 6–8; corollas yellow, 4.5–8 × 2.5–5 mm. Disc florets 25–50+; corollas 2.7–3.2 mm. Cypselae narrowly obpyramidal, 2–3 mm; pappi usually of 5 obovate, sometimes aristate, scales 0.9–1.8 mm. 2n = 30.
Phenology: Flowering Jul–Aug(–Oct).
Habitat: Roadsides, open areas, edges of forests
Elevation: 1600–2100 m
Discussion
Selected References
None.