Difference between revisions of "Thelesperma flavodiscum"
Rhodora 61: 245. 1959.
Endemic
Basionym: Thelesperma filifolium var. flavodiscum Shinners Field & Lab. 18: 98. 1950
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | ||
Latest revision as of 20:12, 5 November 2020
Annuals, 30–70(–120+) cm. Cauline leaves ± scattered over proximal 9/10 of plant heights, internodes mostly 35–100+ mm; lobes mostly linear to filiform, sometimes oblanceolate, (10–)25–45+ × 0.5–1(–2) mm. Calyculi of 7–9 linear to narrowly triangular bractlets 4–6(–8) mm. Ray florets 8; laminae yellow, 12–20+ mm. Disc corollas yellow, often with red-brown nerves, throats shorter than lobes. Cypselae 4–5 mm; pappi 0.5–1.5+ mm. 2n = 18, 20.
Phenology: Flowering May–Jun.
Habitat: On sands, post-oak savannas
Elevation: 100–200 m
Discussion
Differences between Thelesperma flavodiscum and T. filifolium are subtle; they may be better treated as one species.
Selected References
None.
Lower Taxa
None.