Difference between revisions of "Pascalia"
Nov. Pl. Descr. Dec., 39, plate 4. 1797.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Latest revision as of 21:11, 5 November 2020
Perennials, 30–100 cm (rhizomatous). Stems erect, branched ± throughout. Leaves cauline; opposite; petiolate or sessile; blades (3-nerved) lanceolate to lance-linear (widest at or proximal to middles, not notably fleshy), bases cuneate, margins entire or toothed, faces sparsely scabrous. Heads radiate, borne singly. Involucres campanulate to hemispheric, 10–15 mm diam. Phyllaries persistent, 20–28 in 2–3 series (linear to lance-linear, herbaceous, subequal or outer longer than inner, spreading in fruit). Receptacles hemispheric, paleate (paleae lanceolate to ovate, conduplicate, becoming papery). Ray florets 13–21, pistillate, fertile; corollas yellow. Disc florets 45–90+, bisexual, fertile; corollas yellow, tubes shorter than campanulate throats, lobes 5, ± deltate. Cypselae 3-angled or ± compressed and weakly 4-angled (epidermes usually thick, corky, bases without elaiosomes, apices not rostrate); pappi 0, or persistent, coroniform (of connate scales plus 0–2 awns). x = 33.
Distribution
Introduced; South America.
Discussion
Species 2 (1 in the flora).
Selected References
None.