Townsendia texensis |
Townsendia leptotes |
|
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Texas Townsend daisy |
common Townsend daisy, common townsendia, slender townsendia |
|
Habit | Biennials (sometimes persisting), 15–25+ cm. | Perennials, 1–3 cm (± pulvinate). |
Stems | decumbent to erect; internodes 5–20+ mm, strigose. |
± erect; internodes 0.1–1 mm, strigose. |
Leaves | basal and cauline, blades oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose. |
basal and cauline, blades spatulate to narrowly obovate, (8–)12–25(–40+) × 1–2(–3+) mm, ± fleshy, faces ± strigose to strigillose or glabrate. |
Involucres | ± campanulate to hemispheric, 12–15(–20+) mm diam. |
± campanulate, 8–12(–20+) mm diam. |
Ray florets | 25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
13–34+; corollas usually white or pinkish, seldom blue, adaxially, laminae 5–7(–12+) mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent. |
Disc florets | 80–120+; corollas 3.5–5 mm. |
40–80+; corollas 4–6+ mm. |
Phyllaries | 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. |
40–50+ in 4–5+ series, the longer ± lanceolate, 7–9(–12) mm (l/w = 2.5–5), apices acute to attenuate, abaxial faces sparsely strigose or glabrous. |
Heads | at tips of stems (usually surpassed by leaves). |
usually ± sessile, rarely on scapiform peduncles 5–15+ mm. |
Cypselae | 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. |
3+ mm, faces glabrous or sparsely hairy (hairs mostly at bases), hair tips glochidiform; pappi persistent; on ray cypselae ca. 25 lanceolate or subulate to setiform scales 0–1 or 5–8 mm; on disc cypselae ca. 30 subulate to setiform scales 5–8 mm. |
2n | = 18. |
= 18. |
Townsendia texensis |
Townsendia leptotes |
|
Phenology | Flowering May–Jun. | Flowering Jun–Jul. |
Habitat | Cherts, limestone slopes | Rocky ridges, sandy slopes |
Elevation | 1200 m (3900 ft) | (2300–)2900–3800 m ((7500–)9500–12500 ft) |
Distribution |
OK; TX |
CA; CO; ID; MT; NM; NV; UT; WY
|
Source | FNA vol. 20, p. 196. | FNA vol. 20, p. 203. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. sericea var. leptotes | |
Name authority | Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) | (A. Gray) Osterhout: Muhlenbergia 4: 69. (1908) |
Web links |