Townsendia florifer

(Hooker) A. Gray

Proc. Amer. Acad. Arts 16: 84. 1880.

Basionym: Erigeron florifer Hooker Fl. Bor.-Amer. 2: 20. 1834
Synonyms: Townsendia florifer var. watsonii (A. Gray) Cronquist
Treatment appears in FNA Volume 20. Treatment on page 198. Mentioned on page 194, 199.

Biennials (perhaps flowering first year, sometimes persisting), 3–12(–15+) cm. Stems decumbent to erect; internodes 3–12(–15+) mm, piloso-strigose. Leaves basal and cauline, blades spatulate to linear, 10–25(–50+) × 2–3(–8+) mm, not fleshy, faces ± strigose. Heads at tips of stems. Involucres ± hemispheric or broader, 16–20(–30) mm diam. Phyllaries 24–30+ in 3–4+ series, the longer ± lanceolate, (6–)9–11+ mm (l/w = 2.5–5), apices acute, abaxial faces strigose. Ray florets 13–34+; corollas white or pinkish adaxially, laminae (8–)10–18+ mm, abaxially usually glandular-puberulent, rarely glabrous. Disc florets (80–)100–150+; corollas (4–)5.5–6+ mm. Cypselae (3.5–)4–5+ mm, faces hairy, hair tips entire or forked; pappi persistent; on ray cypselae 20–30 subulate to setiform scales 2–6 mm; on disc cypselae 20–30+ subulate to setiform scales (4–)5–7+ mm. 2n = 18.

Phenology: Flowering Apr–Jun(–Aug).
Habitat: Gravelly flats with junipers and sagebrush
Elevation: 400–2300 m



Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.


J. H. Beaman (1957) considered plants intermediate between Townsendia florifer and T. parryi to be hybrids. Such intermediates occur in Montana (e.g., Jones in 1905 from Gallatin Co. and Suksdorf 282 from Park Co.), outside the known distribution of T. florifer.

Selected References


Lower Taxa