Adenophyllum porophylloides

(A. Gray) Strother

Sida 11: 377. 1986

Basionyms: Dyssodia porophylloides A. Gray Mem. Amer. Acad. Arts, n. s. 5: 322. 1854
Treatment appears in FNA Volume 21. Treatment on page 239. Mentioned on page 238.
Perennials or subshrubs, 20–50+ cm. Leaves pinnately lobed, 15–40 mm, lobes 3–5, linear to cuneate or oblanceolate (oil-glands at base of each lobe and subterminal in tips). Peduncles 20–80 mm. Calyculi of 12–16 subulate bractlets 3–8 mm (bearing glands). Involucres obconic, 10–15 mm. Phyllaries 12–20, lanceolate, separating in fruit. Ray florets 10–14; corollas yellow, becoming red-orange; tubes ca. 2 mm, laminae 6 × 2 mm. Disc florets 25–40; corollas yellow-orange, 7–8 mm. Cypselae 5 mm; pappi of 8–12 scales 7–8 mm, each comprising 7–11 basally connate bristles. 2n = 26.

Phenology: Flowering spring and fall.
Habitat: Alluvial fans and rocky slopes in deserts
Elevation: 0–1200 m

Distribution

V21-582-distribution-map.gif

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

Discussion

References

None.

Lower Taxa

No lower taxa listed.