Isocoma drummondii

(Torrey & A. Gray) Greene

Erythea 2: 111. 1894

Common names: Drummond’s jimmyweed
Synonyms: Haplopappus drummondii (Torrey & A. Gray) S. F. BlakeIsocoma megalantha Shinners
Basionyms: Linosyris drummondii Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 444. Mentioned on page 440.
Herbage glabrous, not resinous. Leaf blades narrowly oblong to oblanceolate-oblong, 13–50 mm, margins usually entire, sometimes distally toothed (shallow teeth in 1–3 pairs). Involucres (5.5–)6.5–8 × 4.5–5.5(–7) mm. Phyllary apices usually green, not aristate, usually strongly gland-dotted, without resin pockets. Florets (18–)22–34; corollas 5.8–7.5 mm. Cypsela ribs not forming hornlike extensions.

Phenology: Flowering (Mar–)May–Jul.
Habitat: Coastal habitats, often on beach dunes, sand or less commonly clay, brushy prairies, scrub woods, often with mesquite
Elevation: 0–20 m

Distribution

V20-1020-distribution-map.gif

Tex., Mexico (Tamaulipas).

Discussion

References

None.

Lower Taxa

No lower taxa listed.