Difference between revisions of "Helenium amarum"
Rhodora 59: 131. 1957.
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|name=Gaillardia amara | |name=Gaillardia amara | ||
|authority=Rafinesque | |authority=Rafinesque | ||
| + | |rank=species | ||
|publication_title=Fl. Ludov., | |publication_title=Fl. Ludov., | ||
|publication_place=69. 1817 (as Galardia) | |publication_place=69. 1817 (as Galardia) | ||
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|name=Helenium tenuifolium | |name=Helenium tenuifolium | ||
|authority=Nuttall | |authority=Nuttall | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Gaillardiinae;Helenium;Helenium amarum | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Gaillardiinae;Helenium;Helenium amarum | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Helenium amarum | name=Helenium amarum | ||
| − | |||
|authority=(Rafinesque) H. Rock | |authority=(Rafinesque) H. Rock | ||
|rank=species | |rank=species | ||
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|publication year=1957 | |publication year=1957 | ||
|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_1067.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | ||
Revision as of 19:32, 16 December 2019
Annuals, 10–100 cm. Stems 1–3(–15), usually branched distally, not winged, glabrous or sparsely hairy. Leaves glabrous or sparsely hairy; basal blades linear to ovate, entire or pinnately toothed or lobed to pinnatifid; mid and distal blades linear, entire. Heads (1–)10–150(–250+) per plant, in paniculiform arrays. Peduncles 3–11 cm, sparsely hairy. Involucres hemispheric to globose or globoid, 5–9 × 6–10 mm. Phyllaries moderately to densely hairy. Ray florets 8–10, pistillate, fertile; corollas yellow, 4.5–14 × 2–10 mm. Disc florets 75–250+; corollas yellow proximally, yellow to yellow-brown or purple distally, 1.6–2.7 × 0.8–1.2 mm, lobes 5. Cypselae 0.7–1.3 mm, moderately to densely hairy; pappi of 6–8 entire, aristate scales 1–1.8 mm.
Distribution
se United States, n Mexico.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Basal and proximal cauline leaves usually withered by flowering; basal blades usually entire or pinnately toothed, sometimes pinnatifid; proximal blades usually entire, sometimes pinnately toothed; disc corollas yellow to yellow-brown distally | Helenium amarum var. amarum |
| 1 | Basal and proximal cauline leaves often present at, sometimes withered by, flowering; basal blades pinnatifid; proximal blades entire or pinnately toothed or lobed to pinnatifid; disc corollas purple distally | Helenium amarum var. badium |