Townsendia scapigera |
Townsendia aprica |
|
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ground townsendia, tuft Townsend daisy, tuft townsendia |
last chance Townsend daisy |
|
Habit | Perennials, 1–2 cm (± pulvinate). | |
Stems | ± erect; internodes 0.1–1 mm, ± strigose. |
± erect; internodes 0.1–1 mm, ± strigose. |
Leaves | basal and cauline, blades ± spatulate to oblanceolate, 15–30(–70) × 2–5(–9) mm, not fleshy, faces ± strigose. |
basal and cauline, blades ± spatulate, 5–8(–16+) × 1.5–2.5+ mm, little, if at all, fleshy, faces ± strigose. |
Involucres | ± campanulate, 12–20(–32) mm diam. |
± campanulate, 4–8+ mm diam. |
Ray florets | 18–35; corollas white adaxially, laminae 7–16 mm, glandular-puberulent abaxially. |
13–21; corollas yellow adaxially, laminae 4–6+ mm, glandular-puberulent abaxially. |
Disc florets | 40–100+; corollas 3.5–5.5 mm. |
25–60+; corollas 4–5+ mm. |
Phyllaries | 16–32+ in 3–4+ series, the longer ± lanceolate, (7–)9–13 mm (l/w = 3–5), apices acute, abaxial faces piloso-strigose to strigose. |
24–40+ in 4+ series, the longer ± lanceolate, 4–7 mm (l/w = 2.5–5), sometimes glabrate, apices acute to attenuate, abaxial faces usually sparsely strigillose or glandular-puberulent. |
Heads | on scapiform peduncles 30–60(–120) mm. |
± sessile. |
Cypselae | 4–5.5 mm, faces hairy, hair tips forked or entire; pappi persistent; on ray cypselae 20–30+ subulate to setiform scales 3–6+ mm; on disc cypselae 20–30 subulate to setiform scales 5–7+ mm. |
2–2.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 10–12 lanceolate to subulate scales 0.5–1+ mm; on disc cypselae 20+ subulate to setiform scales 4–5+ mm. |
2n | = 18. |
|
Townsendia scapigera |
Townsendia aprica |
|
Phenology | Flowering May–Jul(–Aug). | Flowering Apr–May. |
Habitat | Openings in sagebrush | Clay hills |
Elevation | 1400–3400 m (4600–11200 ft) | 1500–2500 m (4900–8200 ft) |
Distribution |
CA; ID; NV; OR; UT
|
UT |
Discussion | Plants that key here and have peduncles 5–15+ mm (sporting smaller heads, fewer ray florets, and smaller cypselae than are characteristic of Townsendia scapigera) may belong to T. jonesii (which see). Plants included here in T. scapigera from Sweetwater Mountains, California, with relatively large heads and high numbers of florets were identified on their labels (e.g., DeDecker 3928, RSA) as T. parryi, a species not known to occur in California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Townsendia aprica is questionably distinct from T. jonesii. Townsendia aprica is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 201. | FNA vol. 20, p. 201. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | T. jonesii var. lutea | |
Name authority | D. C. Eaton: in S. Watson, Botany (Fortieth Parallel), 145, plate 17, figs. 1–7. (1871) | S. L. Welsh & Reveal: Brittonia 20: 375, fig. 1. (1968) |
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