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Black Rock Townsend daisy

common Townsend daisy, common townsendia, slender townsendia

Habit Perennials, 3–8(–12+) cm (usually ± pulvinate). Perennials, 1–3 cm (± pulvinate).
Stems

± erect;

internodes 0.1–1 mm, ± scabrellous.

± erect;

internodes 0.1–1 mm, strigose.

Leaves

basal and cauline, ± spatulate to oblanceolate, 15–50(–80) × 2–6(–11) mm, little, if at all, fleshy, faces ± scabrellous.

basal and cauline, blades spatulate to narrowly obovate, (8–)12–25(–40+) × 1–2(–3+) mm, ± fleshy, faces ± strigose to strigillose or glabrate.

Involucres

± hemispheric to campanulate, 10–15 mm diam.

± campanulate, 8–12(–20+) mm diam.

Ray florets

12–21;

corollas white adaxially, laminae 6–12+ mm, glabrous abaxially.

13–34+;

corollas usually white or pinkish, seldom blue, adaxially, laminae 5–7(–12+) mm, abaxially usually glabrous, sometimes sparsely glandular-puberulent.

Disc florets

60–80+;

corollas 3.5–5 mm.

40–80+;

corollas 4–6+ mm.

Phyllaries

14–26 in 2–3+ series, the longer lance-ovate to lanceolate, 9–11 mm (l/w = 3–5), apices attenuate, abaxial faces piloso-strigose to 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

on scapiform peduncles 30–80(–120) mm.

usually ± sessile, rarely on scapiform peduncles 5–15+ mm.

Cypselae

2.5–3.5 mm, faces hairy, hair tips entire;

pappi persistent, 16–20+ lanceolate to subulate scales 0.2–0.8 mm (± connate).

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 smithii

Townsendia leptotes

Phenology Flowering May. Flowering Jun–Jul.
Habitat Volcanic soils, pinyon or yellow pines Rocky ridges, sandy slopes
Elevation 2000–2400 m (6600–7900 ft) (2300–)2900–3800 m ((7500–)9500–12500 ft)
Distribution
from FNA
AZ
[BONAP county map]
from FNA
CA; CO; ID; MT; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 202. FNA vol. 20, p. 203.
Parent taxa Asteraceae > tribe Astereae > Townsendia Asteraceae > tribe Astereae > Townsendia
Sibling taxa
T. annua, T. aprica, T. condensata, T. eximia, T. exscapa, T. fendleri, T. florifera, T. formosa, T. glabella, T. grandiflora, T. gypsophila, T. hookeri, T. incana, T. jonesii, T. leptotes, T. mensana, T. microcephala, T. minima, T. montana, T. parryi, T. rothrockii, T. scapigera, T. spathulata, T. strigosa, T. texensis
T. annua, T. aprica, T. condensata, T. eximia, T. exscapa, T. fendleri, T. florifera, T. formosa, T. glabella, T. grandiflora, T. gypsophila, T. hookeri, T. incana, T. jonesii, T. mensana, T. microcephala, T. minima, T. montana, T. parryi, T. rothrockii, T. scapigera, T. smithii, T. spathulata, T. strigosa, T. texensis
Synonyms T. sericea var. leptotes
Name authority L. M. Shultz & A. H. Holmgren: Brittonia 32: 144, fig. 1. (1980) (A. Gray) Osterhout: Muhlenbergia 4: 69. (1908)
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