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Texas Townsend daisy

gypsum-lovingtownsend daisy

Habit Biennials (sometimes persisting), 15–25+ cm. Perennials, 2–10 cm (± pulvinate to dendroid).
Stems

decumbent to erect;

internodes 5–20+ mm, strigose.

± erect;

inter- nodes 0.1–1+ mm, densely piloso-hirsute to hispidulous (surfaces usually hidden by hairs).

Leaves

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

basal and cauline, blades ± spatulate or oblanceolate to linear, 4–9(–25) × 1–2(–3) mm, ± fleshy, ± strigose.

Involucres

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

± hemispheric to campanulate, 3–6 mm diam.

Ray florets

25–40+;

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

(4–)12–16;

corollas white or pinkish adaxially, laminae 3–5+ mm, glabrous abaxially.

Disc florets

80–120+;

corollas 3.5–5 mm.

40–60;

corollas 2.5–3+ 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.

22–26 in 3–4+ series, the longer ± lanceolate, 3–4 mm (l/w = 2.5–5), apices acute, abaxial faces ± strigillose.

Heads

at tips of stems (usually surpassed by leaves).

± sessile.

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.

2–2.5 mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae 12–15 lance-subulate scales 0.1–0.5 mm;

on disc cypselae 12–15+ subulate to setiform scales 2.5–3+ mm.

2n

= 18.

Townsendia texensis

Townsendia gypsophila

Phenology Flowering May–Jun. Flowering Apr–Sep.
Habitat Cherts, limestone slopes Gypsum outcrops
Elevation 1200 m (3900 ft) 1600–2100 m (5200–6900 ft)
Distribution
from FNA
OK; TX
[BONAP county map]
from FNA
NM
[BONAP county map]
Discussion

Of conservation concern.

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

Source FNA vol. 20, p. 196. FNA vol. 20, p. 199.
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. smithii, T. spathulata, T. strigosa
T. annua, T. aprica, T. condensata, T. eximia, T. exscapa, T. fendleri, T. florifera, T. formosa, T. glabella, T. grandiflora, 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 Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) Lowrey & P. J. Knight: Brittonia 46: 194, fig. 2. (1994)
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