Tetraneuris acaulis var. epunctata
Phytologia 78: 2. 1995.
Plants (2–) 6–15 (–25+) cm. Leaves: blades oblanceolate to linear-oblanceolate, glabrous or sparsely to moderately hairy (not strigoso-canescent or sericeous), some (usually most or all) eglandular or sparsely glanddotted. Heads 1–10 (–15) per plant. Peduncles (1–) 5–15 (–25) cm. Outer phyllaries 6–12, 5–7.5 mm, margins 0–0.2 mm wide, sometimes slightly scarious, abaxial faces ± hairy. Ray-florets 10–14; corollas 11–19 mm. Cypselae 3–4 mm; pappi 2.8–3.7 mm. 2n = 28, 56.
Phenology: Flowering May–Jul(–Sep).
Habitat: Roadsides, hillsides, edges of woods
Elevation: 1600–2700(–3500) m
Distribution
Colo., Utah, Wyo.
Discussion
Some plants of Hymenoxys acaulis from south-central to northeastern Utah and northwestern Colorado have moderately gland-dotted leaf blades. We interpret them to be intermediates between var. epunctata and var. arizonica. Plants referable to var. epunctata have eglandular or very sparsely gland-dotted blades; those referable to var. arizonica have densely gland-dotted blades.
Selected References
None.