Townsendia mensana |
Townsendia texensis |
|
---|---|---|
table Townsend daisy |
Texas Townsend daisy |
|
Habit | Perennials, 1–3 cm (± pulvinate). | Biennials (sometimes persisting), 15–25+ cm. |
Stems | ± erect; internodes 0.1–1 mm, ± pilose. |
decumbent to erect; internodes 5–20+ mm, strigose. |
Leaves | basal and cauline, blades narrowly oblanceolate to lance-linear, 5–40+ × 0.6–2.5+ mm, not fleshy, faces ± strigoso-sericeous to strigose. |
basal and cauline, blades oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose. |
Involucres | ± campanulate, 7–10 mm diam. |
± campanulate to hemispheric, 12–15(–20+) mm diam. |
Ray florets | 13–21+; corollas white adaxially, laminae 4–8+ mm, glandular-puberulent abaxially. |
25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
Disc florets | 40–60+; corollas (3.5–)4.5–6 mm. |
80–120+; corollas 3.5–5 mm. |
Phyllaries | 25–50+ in 4–5+ series, the longer narrowly lanceolate, 6–8+ mm (l/w = 5–6), apices acute, abaxial faces sparsely strigillose or glabrate. |
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 | ± sessile. |
at tips of stems (usually surpassed by leaves). |
Cypselae | 3–3.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 15–35 subulate to setiform scales 0.5–1.5 or 4–5 mm; on disc cypselae 15–35 subulate to setiform scales 4–6.5 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. |
|
Townsendia mensana |
Townsendia texensis |
|
Phenology | Flowering May. | Flowering May–Jun. |
Habitat | Openings with junipers and pinyons | Cherts, limestone slopes |
Elevation | 1700–2700 m (5600–8900 ft) | 1200 m (3900 ft) |
Distribution |
UT |
OK; TX |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 201. | FNA vol. 20, p. 196. |
Parent taxa | ||
Sibling taxa | ||
Name authority | M. E. Jones: Contr. W. Bot. 13: 15. (1910) | Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) |
Web links |