Neoholmgrenia andina
Novon 19: 131. 2009.
Illustrator:
Copyright:
Herbs finely strigillose, more densely so distally, especially on ovary. Stems erect to ascending, capillary, 1–15 cm. Leaves linear to linear-oblanceolate. 1–3 × 0.1–0.3 cm. Flowers opening near sunrise; floral tube 0.8–2 mm; sepals 0.8–2.5 mm; petals 0.8–2.3 mm; episepalous filaments 0.5–2.2 mm, epipetalous filaments 0.1–0.5 mm, sometimes epipetalous stamens absent, anthers of longer stamens 0.2–0.5 mm, those of shorter ones 0.1–0.5 mm; style 1.7–3 mm, usually glabrous, rarely sparsely pubescent near base, stigma 0.4–0.6 mm diam., surrounded by anthers at anthesis. Capsules ascending, strongly flattened from unequal width of valves, (5–)8–10 × 1–1.3 mm. Seeds 0.7–1.3 × 0.3–0.4 mm. 2n = 28, 42.
Phenology: Flowering May–Jul.
Habitat: Open places, clay or sandy soil, swales or drying meadows, playa bottoms, gravelly slopes, sagebrush scrub, pinyon-juniper woodlands.
Elevation: 500–2000 m.
Distribution
Alta., B.C., Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
Discussion
Some individuals of Neoholmgrenia andina have 3-merous flowers and some have stamens reduced to one whorl of four; both character states are possibly related to its predominant autogamous, and sometimes cleistogamous, habit (P. H. Raven 1969).
Selected References
None.