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

wrinkled spineflower

Habit Plants erect, 0.3–1.5 × 0.3–1 dm, thinly tomentose.
Leaves

basal or nearly so;

petiole 0.5–2(–3) cm;

blade round-ovate, (0.5–)0.8–1.5(–2) × (0.3–)0.5–1.5(–2) cm, thinly floccose to tomentose.

Inflorescences

with involucres in small clusters 0.5–1 cm diam., green to tan or reddish;

bracts 2, linear to linear-lanceolate, acicular, 2–7 cm × 1–2.5 mm, awns slightly curved, 0.5–1 mm.

Involucres

1, green to tan, cylindric, 3-angled but 3-ribbed, 3–4 mm, markedly transverse corrugate, glabrate;

teeth 3, equal, 2–4.5 mm;

awns uncinate, 0.6–1 mm.

Flowers

1, included to slightly exserted;

perianth white, cylindric, 2–2.5 mm, thinly pubescent abaxially;

tepals connate ca. 2/3 their length, monomorphic, oblong, acute, entire apically;

stamens 6, slightly exserted;

filaments distinct, 0.8–1 mm, glabrous;

anthers cream, ovate, 0.4–0.5 mm.

Achenes

brown, lenticular, 2.5–3 mm.

2n

= 38.

Chorizanthe corrugata

Phenology Flowering Feb–May.
Habitat Sandy to gravelly flats and slopes, mixed grassland, saltbush, creosote bush, and sagebrush communities
Elevation -70-1000 m (-200-3300 ft)
Distribution
from FNA
AZ; CA; NV; Mexico (Baja California, Sonora)
[WildflowerSearch map]
[BONAP county map]
Discussion

Chorizanthe corrugata is found mainly in the Mojave and Sonoran deserts. The narrow, transversely corrugated involucral tube is diagnostic. Some anomalous flowers with four or eight stamens have been seen but this condition was always associated with other flowers bearing the normal number.

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

Source FNA vol. 5, p. 468.
Parent taxa Polygonaceae > subfam. Eriogonoideae > Chorizanthe > subg. Amphietes > sect. Acanthogonum
Sibling taxa
C. angustifolia, C. biloba, C. blakleyi, C. brevicornu, C. breweri, C. clevelandii, C. cuspidata, C. diffusa, C. douglasii, C. fimbriata, C. howellii, C. leptotheca, C. membranacea, C. obovata, C. orcuttiana, C. palmeri, C. parryi, C. polygonoides, C. procumbens, C. pungens, C. rectispina, C. rigida, C. robusta, C. spinosa, C. staticoides, C. stellulata, C. uniaristata, C. valida, C. ventricosa, C. watsonii, C. wheeleri, C. xanti
Synonyms Acanthogonum corrugatum
Name authority (Torrey) Torrey & A. Gray: Proc. Amer. Acad. Arts 8: 198. (1870)
Web links