Townsendia strigosa |
Townsendia texensis |
|
---|---|---|
hairy Townsend-daisy, hairy townsendia |
Texas Townsend daisy |
|
Habit | Biennials, (1–)3–10(–20) cm. | Biennials (sometimes persisting), 15–25+ cm. |
Stems | decumbent to erect; internodes 5–25 mm, piloso-strigose to strigillose (surfaces seldom hidden by hairs). |
decumbent to erect; internodes 5–20+ mm, strigose. |
Leaves | basal and cauline, blades spatulate to oblanceolate or linear, 12–30(–50) × 2–7(–9) mm, not fleshy, faces ± strigose to strigillose. |
basal and cauline, blades oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose. |
Involucres | ± campanulate, 5–20 mm diam. |
± campanulate to hemispheric, 12–15(–20+) mm diam. |
Ray florets | 8–30+; corollas white or pinkish adaxially, laminae 5–14 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
Disc florets | (8–)20–80(–100+); corollas 3.5–5 mm. |
80–120+; corollas 3.5–5 mm. |
Phyllaries | 20–24 in 3–4+ series, the longer ± lance-ovate to lanceolate, 5–9 mm (l/w = 2.5–5), apices acute to acuminate, 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 (usually surpassed by leaves). |
at tips of stems (usually surpassed by leaves). |
Cypselae | 3–4 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 12–20+ lanceolate to subulate scales 0.5–1.5+ mm; on disc cypselae 20–35 subulate to setiform scales 3.5–5.5 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 strigosa |
Townsendia texensis |
|
Phenology | Flowering May–Jun. | Flowering May–Jun. |
Habitat | Open sites, sands, shales, clays with desert scrub, junipers, pinyons | Cherts, limestone slopes |
Elevation | 1500–2000 m (4900–6600 ft) | 1200 m (3900 ft) |
Distribution |
AZ; CO; NM; UT; WY
|
OK; TX |
Source | FNA vol. 20, p. 199. | FNA vol. 20, p. 196. |
Parent taxa | Asteraceae > tribe Astereae > Townsendia | Asteraceae > tribe Astereae > Townsendia |
Sibling taxa | ||
Synonyms | T. strigosa var. prolixa | |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 306. (1840) | Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) |
Web links |