Neoholmgrenia andina

(Nuttall) W. L. Wagner & Hoch

Novon 19: 131. 2009.

Basionym: Oenothera andina Nuttall in J. Torrey and A. Gray Fl. N. Amer. 1: 512. 1840
Synonyms: Camissonia andina (Nuttall) P. H. Raven Holmgrenia andina (Nuttall) W. L. Wagner & Hoch O. andina var. anomala M. Peck Sphaerostigma andinum (Nuttall) Walpers
Treatment appears in FNA Volume 10.
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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.

Lower Taxa

None.
... more about "Neoholmgrenia andina"
Warren L. Wagner +
(Nuttall) W. L. Wagner & Hoch +
Oenothera andina +
Alta. +, B.C. +, Calif. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
500–2000 m. +
Open places, clay or sandy soil, swales or drying meadows, playa bottoms, gravelly slopes, sagebrush scrub, pinyon-juniper woodlands. +
Flowering May–Jul. +
Camissonia andina +, Holmgrenia andina +, O. andina var. anomala +  and Sphaerostigma andinum +
Neoholmgrenia andina +
Neoholmgrenia +
species +