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Texas Townsend daisy

annual Easter daisy, annual Townsend daisy

Habit Biennials (sometimes persisting), 15–25+ cm. Annuals, 3–12(–16+) cm.
Stems

decumbent to erect;

internodes 5–20+ mm, strigose.

decumbent to erect;

internodes (1–)3–12(–18+) mm, strigose.

Leaves

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

mostly cauline, blades spatulate to narrowly oblanceolate, 8–12(–25+) × 1–3(–5+) mm, not fleshy, faces ± strigillose.

Involucres

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

± hemispheric, 8–12(–16) mm diam.

Ray florets

25–40+;

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

12–30+;

corollas white or pinkish to lavender adaxially, laminae 5–8+ mm, glabrous abaxially.

Disc florets

80–120+;

corollas 3.5–5 mm.

60–120+;

corollas 2.5–3.5+ 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.

26–30+ in 3+ series, the longer ± lance-ovate to oblanceolate, 5–6+ mm (l/w = 2.5–5), apices acute, abaxial faces strigillose to glabrate.

Heads

at tips of stems (usually surpassed by leaves).

at tips of stems.

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.

2–3 mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae ± 10 lanceolate scales 0.2–0.5(–1) mm;

on disc cypselae 20+ subulate scales 1–2.5(–4) mm.

2n

= 18.

= 18.

Townsendia texensis

Townsendia annua

Phenology Flowering May–Jun. Flowering Apr–Jun(–Oct).
Habitat Cherts, limestone slopes Sandy soils, alkaline flats, red clays
Elevation 1200 m (3900 ft) 1200–2100 m (3900–6900 ft)
Distribution
from FNA
OK; TX
[BONAP county map]
from FNA
AZ; CO; NM; TX; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

The type of Townsendia annua may prove to be conspecific with that of T. strigosa.

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

Source FNA vol. 20, p. 196. FNA vol. 20, p. 198.
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. 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. texensis
Name authority Larsen: Ann. Missouri Bot. Gard. 14: 15, plate 3. (1927) Beaman: Contr. Gray Herb. 183: 132, plate 22, fig. 4. (1957)
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