The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

hoary Townsend daisy, hoary townsendia, silvery townsendia

Hooker's Townsend daisy, Hooker's townsendia

Habit Perennials, (1–)2–8(–12+) cm. Perennials, 1–3 cm (± pulvinate).
Stems

decumbent to erect;

internodes (0.5–)2–6(–12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs).

± erect;

internodes 0.1–1 mm, ± strigose.

Leaves

basal and cauline, blades spatulate to narrowly oblanceolate, 3–12(–40+) × 1–2(–4+) mm, not fleshy, ± strigoso-scabrellous to strigillose.

basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all.

Involucres

± campanulate to hemispheric, (6–)10–15(–20) mm diam.

± campanulate, 8–18+ mm diam.

Ray florets

(8–)13–34+;

corollas white or pinkish adaxially, laminae 5–8(–12+) mm, abaxially usually glabrous, sometimes glandular-puberulent at bases.

15–35;

corollas white adaxially, laminae 8–12+ mm, glabrous abaxially.

Disc florets

60–80+;

corollas 4.5–6.5+ mm.

120–180+;

corollas 4–5(–6+) mm.

Phyllaries

16–28+ in 3–4+ series, the longer ± lance-ovate to lanceolate, (6–)8–9(–12+) mm (l/w = 2.5–5), apices acute, abaxial faces strigose.

50–65+ in 5+ series, the longer ± lance-linear, 7–11(–13) mm (l/w = 6–9), apices attenuate, abaxial faces sparsely strigose or glabrate.

Heads

at tips of stems (usually surpassed by leaves).

± sessile.

Cypselae

3.5–4.5+ mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae 15–30 lanceolate or subulate to setiform scales 0.3–0.6 or 4–6+ mm;

on disc cypselae 15–30+ subulate to setiform scales 4–6+ mm.

3.5–4.5 mm, faces hairy, hair tips glochidiform;

pappi persistent;

on ray cypselae ca. 30 subulate to setiform scales (1–)5–7 mm;

on disc cypselae ca. 30 subulate to setiform scales 5.5–7.5+ mm.

2n

= 18.

= 18.

Townsendia incana

Townsendia hookeri

Phenology Flowering Apr–Jul. Flowering Mar–Jun.
Habitat Sandy soils, rocky benches, shales, with pinyons and junipers Gravelly benches, sandy slopes
Elevation 1100–2200 m (3600–7200 ft) 700–1800 m (2300–5900 ft)
Distribution
from FNA
AZ; CO; MT; NM; NV; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CO; ID; MT; ND; NE; SD; UT; WY; AB; BC; SK; YT
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 20, p. 199. FNA vol. 20, p. 200.
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. 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. glabella, T. grandiflora, T. gypsophila, 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
Synonyms T. arizonica T. nuttallii
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 305. (1840) Beaman: Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. (1957)
Web links