Psilactis brevilingulata

Schultz-Bipontinus ex Hemsley

Diagn. Pl. Nov. Mexic. 2: 34. 1879.

Synonyms: Aster brevilingulatus (Schultz-Bipontinus ex Hemsley) McVaugh Machaeranthera brevilingulata (Schultz-Bipontinus ex Hemsley) B. L. Turner & D. B. Horne
Treatment appears in FNA Volume 20. Treatment on page 463. Mentioned on page 462.

Annuals, 15–75 cm. Stems and branches stipitate-glandular, more densely distally, often also with appressed or erect hairs. Distal leaf blades sessile, lanceolate to linear-lanceolate, smallest 2–10 × 0.5–1.5 mm. Involucres broadly turbinate to hemispheric, 2–4 mm. Phyllaries lanceolate to linear, slightly unequal, 1.5–3.5 × 0.2–0.6 mm, bases indurate, margins scarious. Receptacles flat to convex, 1.5–2.5 mm diam. Ray florets 15–40; laminae 1–4 × 0.2–0.5 mm. Disc florets 15–35; corollas 1.5–2.5 mm. Ray cypselae 1–1.5 mm, moderately appressed-hairy. Disc cypselae 1.3–2 mm, moderately appressed-hairy; pappi 20–25, 2–2.5 mm. 2n = 18 (Mexico).


Phenology: Flowering May–Oct.
Habitat: Fields, roadsides, stream banks, open areas in oak and pine-oak woodlands
Elevation: 1300–2100 m

Distribution

V20-1068-distribution-map.gif

Ariz., N.Mex., Tex., Mexico, South America (Colombia, Peru).

Discussion

In the flora area, Psilactis brevilingulata occurs in the Chihuahuan Desert regions of southeastern Arizona, southwestern New Mexico, and western Texas.

Selected References

None.

Lower Taxa

None.
... more about "Psilactis brevilingulata"
David R. Morgan +
Schultz-Bipontinus ex Hemsley +
Ariz. +, N.Mex. +, Tex. +, Mexico +, South America (Colombia +  and Peru). +
1300–2100 m +
Fields, roadsides, stream banks, open areas in oak and pine-oak woodlands +
Flowering May–Oct. +
Diagn. Pl. Nov. Mexic. +
Aster brevilingulatus +  and Machaeranthera brevilingulata +
Psilactis brevilingulata +
Psilactis +
species +