Fagonia pachyacantha


in N. L. Britton et al., N. Amer. Fl. 25: 105. 1910.

Common names: Sticky fagonia
Synonyms: Fagonia californica var. glutinosa Pringle ex Vail
Treatment appears in FNA Volume 12. Treatment on page 31. Mentioned on page 30, 32.

Perennial herbs or subshrubs, to 0.6 m, to 1 m diam. Stems ± prostrate, radiating from plant base, sparsely branched, dark green, not noticeably slender, ultimate branches densely short-stipitate- to subsessile-glandular, glands globular (drying to cup-shaped), golden (making branches appear yellowish from a distance), 1 mm diam.; older stems glabrate basally, not scabrous. Leaves (1–)3-foliolate; stipules straight, spreading to slightly reflexed, stout, linear-subulate, 3–16 mm, about as long as petioles, glandular to glabrate; petiole 2–16 mm, glandular to glabrate; leaflets ovate to elliptic, slightly obovate, or linear and terete, glandular, becoming glabrate, ± as long as or longer than petiole, apex spinulose, often fleeting, terminal to 26 × 10 mm, laterals to 20 × 7 mm, shorter and narrower than terminal, one or both commonly caducous. Pedicels 1–7 mm, glandular. Flowers to 1.5 cm diam.; sepals green to purple, ovate-lanceolate, 2–4 × 1–1.5 mm, apiculate, glandular to glabrate; petals light to dark red-purple, 5–8 × 2.5–5.5 mm; stamen filaments 3.5–5 mm; ovary 2 mm, glandular, hairy; style 2–3 mm. Capsules 3.5–5.5 × 4–5 mm, puberulent, usually glandular; style 1.5–4 mm, not or barely wider at base.

Phenology: Flowering Nov–May.
Habitat: Flat, sandy or rocky desert habitats.
Elevation: 0–500 m.


V12 279-distribution-map.jpg

Ariz., Calif., Mexico (Baja California, Baja California Sur, Sonora).


Fagonia pachyacantha is found only in the Sonoran Desert.

Selected References


Lower Taxa

... more about "Fagonia pachyacantha"
Duncan M. Porter +
Rydberg +
Sticky fagonia +
Ariz. +, Calif. +, Mexico (Baja California +, Baja California Sur +  and Sonora). +
0–500 m. +
Flat, sandy or rocky desert habitats. +
Flowering Nov–May. +
in N. L. Britton et al., N. Amer. Fl. +
Fagonia californica var. glutinosa +
Fagonia pachyacantha +
species +