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

Hooker's Townsend daisy, Hooker's townsendia

Habit Biennials (perhaps flowering first year, sometimes persisting), 3–12(–15+) cm. Perennials, 1–3 cm (± pulvinate).
Stems

decumbent to erect;

internodes 3–12(–15+) mm, piloso-strigose.

± erect;

internodes 0.1–1 mm, ± strigose.

Leaves

basal and cauline, blades spatulate to linear, 10–25(–50+) × 2–3(–8+) mm, not fleshy, faces ± strigose.

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

± hemispheric or broader, 16–20(–30) mm diam.

± campanulate, 8–18+ mm diam.

Ray florets

13–34+;

corollas white or pinkish adaxially, laminae (8–)10–18+ mm, abaxially usually glandular-puberulent, rarely glabrous.

15–35;

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

Disc florets

(80–)100–150+;

corollas (4–)5.5–6+ mm.

120–180+;

corollas 4–5(–6+) mm.

Phyllaries

24–30+ in 3–4+ series, the longer ± lanceolate, (6–)9–11+ 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.

± sessile.

Cypselae

(3.5–)4–5+ mm, faces hairy, hair tips entire or forked;

pappi persistent;

on ray cypselae 20–30 subulate to setiform scales 2–6 mm;

on disc cypselae 20–30+ subulate to setiform scales (4–)5–7+ 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 florifera

Townsendia hookeri

Phenology Flowering Apr–Jun(–Aug). Flowering Mar–Jun.
Habitat Gravelly flats with junipers and sagebrush Gravelly benches, sandy slopes
Elevation 400–2300 m (1300–7500 ft) 700–1800 m (2300–5900 ft)
Distribution
from FNA
ID; MT; NV; OR; UT; WA; WY
from FNA
AK; CO; ID; MT; ND; NE; SD; UT; WY; AB; BC; SK; YT
[WildflowerSearch map]
[BONAP county map]
Discussion

J. H. Beaman (1957) considered plants intermediate between Townsendia florifera and T. parryi to be hybrids. Such intermediates occur in Montana (e.g., Jones in 1905 from Gallatin Co. and Suksdorf 282 from Park Co.), outside the known distribution of T. florifera.

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

Source FNA vol. 20, p. 198. 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. 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. 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 Erigeron florifer, T. florifera var. watsonii T. nuttallii
Name authority (Hooker) A. Gray: Proc. Amer. Acad. Arts 16: 84. (1880) Beaman: Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. (1957)
Web links