Townsendia florifera |
Townsendia texensis |
|
---|---|---|
|
Texas Townsend daisy |
|
Habit | Biennials (perhaps flowering first year, sometimes persisting), 3–12(–15+) cm. | Biennials (sometimes persisting), 15–25+ cm. |
Stems | decumbent to erect; internodes 3–12(–15+) mm, piloso-strigose. |
decumbent to erect; internodes 5–20+ mm, strigose. |
Leaves | basal and cauline, blades spatulate to linear, 10–25(–50+) × 2–3(–8+) mm, not fleshy, faces ± strigose. |
basal and cauline, blades oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose. |
Involucres | ± hemispheric or broader, 16–20(–30) mm diam. |
± campanulate to hemispheric, 12–15(–20+) mm diam. |
Ray florets | 13–34+; corollas white or pinkish adaxially, laminae (8–)10–18+ mm, abaxially usually glandular-puberulent, rarely glabrous. |
25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
Disc florets | (80–)100–150+; corollas (4–)5.5–6+ mm. |
80–120+; corollas 3.5–5 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. |
40–44 in 4–5+ series, the longer ± lanceolate, 5–9+ mm (l/w = 2.5–5), apices acute to attenuate (soft, not apiculate), abaxial faces strigose. |
Heads | at tips of stems. |
at tips of stems (usually surpassed by leaves). |
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. |
3.5–4 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ± 20 lanceolate to subulate scales 0.5–0.8(–2+) mm; on disc cypselae 16–24 subulate to setiform scales 5 mm. |
2n | = 18. |
= 18. |
Townsendia florifera |
Townsendia texensis |
|
Phenology | Flowering Apr–Jun(–Aug). | Flowering May–Jun. |
Habitat | Gravelly flats with junipers and sagebrush | Cherts, limestone slopes |
Elevation | 400–2300 m (1300–7500 ft) | 1200 m (3900 ft) |
Distribution |
ID; MT; NV; OR; UT; WA; WY |
OK; TX |
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. | FNA vol. 20, p. 196. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | Erigeron florifer, T. florifera var. watsonii | |
Name authority | (Hooker) A. Gray: Proc. Amer. Acad. Arts 16: 84. (1880) | Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) |
Web links |