Flora of North America species comparison

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Camissonia kernensis subsp. kernensis

Camissonia kernensis
Photo is of parent taxon

Kern County evening primrose

Kern County evening primrose, Kern sun cups
Habit Herbs compact, villous throughout and sparsely glandular puberulent. Herbs sparsely or densely villous and glandular puberulent, especially distally, sometimes glabrate or sparsely glandular puberulent.
Stems

5–15(–22) cm.

erect, often many-branched, 5–30 cm.
Leaves

proximalmost often clustered near base.

proximalmost sometimes clustered near base;

blade usually very narrowly elliptic to narrowly so, rarely lanceolate, 1–3.8(–5.5) × 0.2–0.5 cm, base narrowly cuneate, margins sparsely serrate, apex acuminate.
Flowers

opening near sunrise;

floral tube 2.2–3.8(–5.5) mm, villous inside;

sepals 5–9(–11) mm, reflexed separately;

petals 8–15(–18) mm, each with 2 large red dots basally; episepalous filaments 3.5–5.5(–7) mm, epipetalous filaments 1.3–2(–4.5) mm, anthers 1.8–2(–3) mm, pollen with less than 5% of grains 4- or 5-pored;

style 7–10(–14) mm, stigma well exserted beyond anthers at anthesis.
Capsules

pedicel 3–15 mm.

22–37 × 1.5–1.7 mm;

pedicel 0–15 mm.
Seeds

1.1–1.2 × 0.5–0.6 mm.
2n

= 14.

Camissonia kernensis subsp. kernensis

Camissonia kernensis
Phenology Flowering Mar–Jul.
Habitat Sandy slopes, flats, often with Artemisia tridentata and Yucca brevifolia.
Elevation 700–2100 m. (2300–6900 ft.)
Distribution
from FNA
CA
[BONAP county map]
from USDA
sw United States
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies kernensis is known only from northeastern Kern County where it is sometimes locally abundant.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Subspecies 2 (2 in the flora).

Camissonia kernensis occurs in sagebrush scrub, and Joshua-tree and pinyon-juniper woodlands at elevations of 700–1900 m in southern and central California and southern Nevada. The species is self-incompatible and is apparently pollinated by oligolectic bees of Andrena subg. Onagrandrena (P. H. Raven 1969); Raven subdivided the species into two intergrading subspecies.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Herbs compact, sparsely glandular puberulent and villous throughout; leaves: proximalmost often clustered near base; pedicels 3–15 mm in fruit.
subsp. kernensis
1. Herbs with open habit, glandular puberulent throughout, usually also sparsely villous, or glabrate, with few glandular hairs; leaves: none clustered near base; pedicels 0–5(–15) mm in fruit.
subsp. gilmanii
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissonia > Camissonia kernensis Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissonia
Sibling taxa
C. kernensis subsp. gilmanii
C. benitensis, C. campestris, C. contorta, C. integrifolia, C. lacustris, C. parvula, C. pubens, C. pusilla, C. sierrae, C. strigulosa
Subordinate taxa
C. kernensis subsp. gilmanii, C. kernensis subsp. kernensis
Synonyms Oenothera kernensis
Name authority unknown (Munz) P. H. Raven: Brittonia 16: 284. (1964)
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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