Townsendia texensis |
Townsendia annua |
|
---|---|---|
Texas Townsend daisy |
annual Easter daisy, annual Townsend daisy |
|
Habit | Biennials (sometimes persisting), 15–25+ cm. | Annuals, 3–12(–16+) cm. |
Stems | decumbent to erect; internodes 5–20+ mm, strigose. |
decumbent to erect; internodes (1–)3–12(–18+) mm, strigose. |
Leaves | basal and cauline, blades oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose. |
mostly cauline, blades spatulate to narrowly oblanceolate, 8–12(–25+) × 1–3(–5+) mm, not fleshy, faces ± strigillose. |
Involucres | ± campanulate to hemispheric, 12–15(–20+) mm diam. |
± hemispheric, 8–12(–16) mm diam. |
Ray florets | 25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. |
12–30+; corollas white or pinkish to lavender adaxially, laminae 5–8+ mm, glabrous abaxially. |
Disc florets | 80–120+; corollas 3.5–5 mm. |
60–120+; corollas 2.5–3.5+ 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. |
26–30+ in 3+ series, the longer ± lance-ovate to oblanceolate, 5–6+ mm (l/w = 2.5–5), apices acute, abaxial faces strigillose to glabrate. |
Heads | at tips of stems (usually surpassed by leaves). |
at tips of stems. |
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. |
2–3 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ± 10 lanceolate scales 0.2–0.5(–1) mm; on disc cypselae 20+ subulate scales 1–2.5(–4) mm. |
2n | = 18. |
= 18. |
Townsendia texensis |
Townsendia annua |
|
Phenology | Flowering May–Jun. | Flowering Apr–Jun(–Oct). |
Habitat | Cherts, limestone slopes | Sandy soils, alkaline flats, red clays |
Elevation | 1200 m (3900 ft) | 1200–2100 m (3900–6900 ft) |
Distribution |
OK; TX |
AZ; CO; NM; TX; UT; WY
|
Discussion | The type of Townsendia annua may prove to be conspecific with that of T. strigosa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 196. | FNA vol. 20, p. 198. |
Parent taxa | ||
Sibling taxa | ||
Name authority | Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) | Beaman: Contr. Gray Herb. 183: 132, plate 22, fig. 4. (1957) |
Web links |