Flora of North America species comparison

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Townsendia florifera
Habit 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.
Involucres

± hemispheric or broader, 16–20(–30) mm diam.
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.
Phyllaries

24–30+ in 3–4+ series, the longer ± lanceolate, (6–)9–11+ mm (l/w = 2.5–5), apices acute, abaxial faces strigose.
Heads

at tips of stems.
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.

Townsendia florifera
Phenology Flowering Apr–Jun(–Aug).
Habitat Gravelly flats with junipers and sagebrush
Elevation 400–2300 m (1300–7500 ft)
Distribution
from FNA
ID; MT; NV; OR; UT; WA; WY
Discussion

J. H. Beaman (1957) considered plants intermediate between Townsendia florifera 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. florifera.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 198.
Parent taxa Asteraceae > tribe Astereae > Townsendia
Sibling taxa
T. annua, T. aprica, T. condensata, T. eximia, T. exscapa, T. fendleri, T. formosa, T. glabella, T. grandiflora, T. gypsophila, T. hookeri, T. incana, T. jonesii, T. leptotes, T. mensana, T. microcephala, T. minima, T. montana, T. parryi, T. rothrockii, T. scapigera, T. smithii, T. spathulata, T. strigosa, T. texensis
Synonyms Erigeron florifer, T. florifera var. watsonii
Name authority (Hooker) A. Gray: Proc. Amer. Acad. Arts 16: 84. (1880)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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