Townsendia aprica

S. L. Welsh & Reveal

Brittonia 20: 375, fig. 1. 1968.

Synonyms: Townsendia jonesii var. lutea S. L. Welsh
Treatment appears in FNA Volume 20. Treatment on page 201. Mentioned on page 193, 195.
Revision as of 20:28, 16 December 2019 by FNA>Volume Importer

Perennials, 1–2 cm (± pulvinate). Stems ± erect; internodes 0.1–1 mm, ± strigose. Leaves basal and cauline, blades ± spatulate, 5–8(–16+) × 1.5–2.5+ mm, little, if at all, fleshy, faces ± strigose. Heads ± sessile. Involucres ± campanulate, 4–8+ mm diam. Phyllaries 24–40+ in 4+ series, the longer ± lanceolate, 4–7 mm (l/w = 2.5–5), sometimes glabrate, apices acute to attenuate, abaxial faces usually sparsely strigillose or glandular-puberulent. Ray florets 13–21; corollas yellow adaxially, laminae 4–6+ mm, glandular-puberulent abaxially. Disc florets 25–60+; corollas 4–5+ mm. Cypselae 2–2.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 10–12 lanceolate to subulate scales 0.5–1+ mm; on disc cypselae 20+ subulate to setiform scales 4–5+ mm. 2n = 18.


Phenology: Flowering Apr–May.
Habitat: Clay hills
Elevation: 1500–2500 m

Discussion

Of conservation concern.

Townsendia aprica is questionably distinct from T. jonesii. Townsendia aprica is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.