Difference between revisions of "Heliopsis"
Syn. Pl. 2: 473. 1807.
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--><p>Most species of <i>Heliopsis</i> are known only from Mexico.</p> | --><p>Most species of <i>Heliopsis</i> are known only from Mexico.</p> | ||
|tables= | |tables= | ||
| − | |references= | + | |references={{Treatment/Reference |
| + | |id=fisher1957a | ||
| + | |text=Fisher, T. R. 1957. Taxonomy of the genus Heliopsis (Compositae). Ohio J. Sci. 57: 171–191. | ||
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|illustration copyright=Flora of North America Association | |illustration copyright=Flora of North America Association | ||
|distribution=North America;Mexico;Central America;South America (to Bolivia). | |distribution=North America;Mexico;Central America;South America (to Bolivia). | ||
| − | |reference= | + | |reference=fisher1957a |
|publication title=Syn. Pl. | |publication title=Syn. Pl. | ||
|publication year=1807 | |publication year=1807 | ||
|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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_145.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Revision as of 20:35, 16 December 2019
Perennials [annuals], 30–150 cm. Stems erect or trailing, branched from bases or ± throughout. Leaves cauline; opposite; petiolate; blades ± 3-nerved from bases, deltate or ovate to lanceolate, bases ± cuneate to subtruncate, margins serrate or coarsely toothed, faces glabrous or hairy. Heads radiate [discoid], borne singly. Involucres turbinate to hemispheric, 8–14 mm diam. Phyllaries persistent, 12–20 in 2–3 series (ovate or oblong, ± equal, outer more foliaceous than inner). Receptacles convex to conic, paleate (paleae tardily falling, yellowish, conduplicate, becoming chartaceous). Ray florets [0] 5–20, pistillate, fertile; corollas yellow to orange (laminae persistent, sessile, becoming papery). Disc florets 30–150+, bisexual, fertile; corollas yellow or brown to purple, tubes much shorter than narrowly cylindric throats, lobes 5, deltate. Cypselae (brown to black-brown) subterete or obscurely 3(ray)- or 4(disc)-angled (not winged); pappi 0, or persistent, coroniform (each a laciniate crown plus 1–3 toothlike scales). x = 14.
Distribution
North America, Mexico, Central America, South America (to Bolivia).
Discussion
Species ca. 18 (3 in the flora).
Most species of Heliopsis are known only from Mexico.
Selected References
Key
| 1 | Aerial stems 1–2+ (from creeping rhizomes 4–10+ cm × 1–2 mm, rhizome internodes ca. 20+ mm); heads 1–3(–5); rays 6–8(–13) | Heliopsis gracilis |
| 1 | Aerial stems 1–10+ (from ± erect caudices, or from creeping rhizomes to 4 cm × 2–6 mm, rhizome internodes 2–10 mm); heads 1–15+; rays 9–18 | > 2 |
| 2 | Leaf blades (1.5–)3–6 × 0.8–3 cm, faces sparsely pubescent to glabrescent; peduncles (6–)15–30 cm; cypselae rugulose to subtuberculate | Heliopsis parvifolia |
| 2 | Leaf blades 6–12(–15) × 2.5–6(–12) cm, faces glabrous, pubescent, or scabrous; peduncles 9–25 cm; cypselae smooth | Heliopsis helianthoides |