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largeflower Townsend daisy

Habit Biennials or perennials, (2–)3–15(–30) cm.
Stems

± erect;

internodes (0.1–)2–25(–50) mm, strigose.

Leaves

basal and cauline, blades spatulate to oblanceolate or linear, 20–40(–90+) × 1–5(–10) mm, not fleshy (margins strigoso-ciliate), faces usually glabrous, sometimes sparsely strigillose (midribs scabrous).

Involucres

hemispheric, (8–)10–14+ mm diam.

Ray florets

20–40;

corollas usually white adaxially, laminae 7–15(–20+) mm, glabrous abaxially.

Disc florets

(60–)80–120+;

corollas 4–6 mm.

Phyllaries

30–40+ in 4–5+ series, the longer lance-ovate to lanceolate, 8–10(–12+) mm (l/w = 3–5), apices acute to attenuate (most hard, apiculate), abaxial faces sparsely strigillose or glabrous.

Heads

at tips of stems (usually surpassed by leaves).

Cypselae

3.5–4+ mm, faces hairy, hair tips forked or glochidiform;

pappi persistent;

on ray cypselae each a corona 0.1–0.5 mm or 10–20 subulate scales 1–2.5 mm;

on disc cypselae 15–30 subulate to setiform scales (4–)5–6 mm.

2n

= 18.

Townsendia grandiflora

Phenology Flowering Jun–Aug(–Sep).
Habitat Grassy slopes, gypseous shales
Elevation 1300–2400 m (4300–7900 ft)
Distribution
from FNA
CO; NE; NM; SD; WY
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 20, p. 197.
Parent taxa 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. 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, T. texensis
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 306. (1840)
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