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ground townsendia, tuft Townsend daisy, tuft townsendia

Texas Townsend daisy

Habit Biennials (sometimes persisting), 15–25+ cm.
Stems

± erect;

internodes 0.1–1 mm, ± strigose.

decumbent to erect;

internodes 5–20+ 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 oblanceolate to lance-linear, 20–45(–60+) × 2–4(–6+) mm, not fleshy, faces ± strigose.

Involucres

± campanulate, 12–20(–32) mm diam.

± campanulate to hemispheric, 12–15(–20+) mm diam.

Ray florets

18–35;

corollas white adaxially, laminae 7–16 mm, glandular-puberulent abaxially.

25–40+;

corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent.

Disc florets

40–100+;

corollas 3.5–5.5 mm.

80–120+;

corollas 3.5–5 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.

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

on scapiform peduncles 30–60(–120) mm.

at tips of stems (usually surpassed by leaves).

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.

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 scapigera

Townsendia texensis

Phenology Flowering May–Jul(–Aug). Flowering May–Jun.
Habitat Openings in sagebrush Cherts, limestone slopes
Elevation 1400–3400 m (4600–11200 ft) 1200 m (3900 ft)
Distribution
from FNA
CA; ID; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
OK; TX
[BONAP county map]
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.)

Source FNA vol. 20, p. 201. FNA vol. 20, p. 196.
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. smithii, 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. leptotes, T. mensana, T. microcephala, T. minima, T. montana, T. parryi, T. rothrockii, T. scapigera, T. smithii, T. spathulata, T. strigosa
Name authority D. C. Eaton: in S. Watson, Botany (Fortieth Parallel), 145, plate 17, figs. 1–7. (1871) Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927)
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