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annual Easter daisy, annual Townsend daisy

Gray's Townsend daisy

Habit Annuals, 3–12(–16+) cm. Perennials, 1–5 cm (± pulvinate).
Stems

decumbent to erect;

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

± erect;

internodes 0.1–1 mm, strigose.

Leaves

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

basal and cauline, blades spatulate to oblanceolate, 20–60+ × 2–5(–11+) mm, little, if at all, fleshy (margins strigoso-ciliate), usually glabrous, sometimes sparsely strigillose.

Involucres

± hemispheric, 8–12(–16) mm diam.

hemispheric or broader, 8–12(–24) mm diam.

Ray florets

12–30+;

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

12–34+;

corollas usually white, sometimes pink or blue adaxially, laminae 5–10(–14+) mm, glabrous abaxially.

Disc florets

60–120+;

corollas 2.5–3.5+ mm.

50–80+;

corollas 3.5–5.5 mm.

Phyllaries

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.

20–28+ in 3–4+ series, the longer ± lanceolate, 5–9 mm (l/w = 3–5), apices acute, abaxial faces glabrous or sparsely strigillose.

Heads

at tips of stems.

usually on scapiform peduncles 10–20(–70) mm, rarely sessile.

Cypselae

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.

2–4 mm, faces sparsely hairy (mostly at bases), hair tips glochidiform;

pappi persistent;

on ray cypselae ± 20 lanceolate to subulate scales 0.5–1.8 mm;

on disc cypselae 15–35 subulate to setiform scales (4–)5–7 mm.

2n

= 18.

= 18.

Townsendia annua

Townsendia glabella

Phenology Flowering Apr–Jun(–Oct). Flowering May–Aug.
Habitat Sandy soils, alkaline flats, red clays Shale slopes with pines
Elevation 1200–2100 m (3900–6900 ft) 2100–2600 m (6900–8500 ft)
Distribution
from FNA
AZ; CO; NM; TX; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
CO
[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.)

Of conservation concern.

Distinctions between Townsendia glabella and T. rothrockii are subtle. Types of the two names are probably better considered to be conspecific.

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

Source FNA vol. 20, p. 198. FNA vol. 20, p. 203.
Parent taxa Asteraceae > tribe Astereae > Townsendia Asteraceae > tribe Astereae > Townsendia
Sibling taxa
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
T. annua, T. aprica, T. condensata, T. eximia, T. exscapa, T. fendleri, T. florifera, T. formosa, 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 Beaman: Contr. Gray Herb. 183: 132, plate 22, fig. 4. (1957) A. Gray: Proc. Amer. Acad. Arts 16: 86. (1881)
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