Flora of North America species comparison

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Neoholmgrenia andina

Andean evening-primrose, Blackfoot River evening-primrose, Blackfoot River suncup, obscure evening primrose, obscure suncup, plateau evening primrose, upland evening primrose
Habit Herbs finely strigillose, more densely so distally, especially on ovary.
Stems

erect to ascending, capillary, 1–15 cm.
Leaves

linear to linear-oblanceolate.
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.
1

–3 × 0.1–0.3 cm.
2n

= 28, 42.

Neoholmgrenia andina
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. (1600–6600 ft.)
Distribution
from FNA
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
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).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Neoholmgrenia
Sibling taxa
N. hilgardii
Synonyms Oenothera andina, Camissonia andina, Holmgrenia andina, O. andina var. anomala, Sphaerostigma andinum
Name authority (Nuttall) W. L. Wagner & Hoch: Novon 19: 131. (2009)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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