Camissoniopsis guadalupensis subsp. clementiana

(P. H. Raven) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 204. 2007.

Basionym: Oenothera guadalupensis subsp. clementina P. H. Raven Aliso 5: 332. 1963
Synonyms: Camissonia guadalupensis subsp. clementina (P. H. Raven) P. H. Raven
Treatment appears in FNA Volume 10.

Herbs annual, subsucculent and heavy-set, densely villous, also glandular puberulent distally. Stems erect, with branches usually arising near base, 2–18(–35) cm. Leaves 1.2–3.8(–9.5) × 0.5–1.2(–1.8) cm; petiole 0–3 cm; blade (basal and proximal cauline) narrowly elliptic, (cauline) narrowly ovate, base attenuate, margins sparsely and inconspicuously denticulate, apex (basal) acute, (cauline) obtuse, rounded, or truncate. Flowers opening near sunrise; floral tube 1.6–2.4 mm; sepals 1.9–3.2 mm; petals yellow, each with 1 red dot near base, 2.8–4.2 mm; episepalous filaments 1.3–2.3 mm, epipetalous filaments 0.4–1.6 mm, anthers 0.4–0.8 mm, less than 5% of pollen grains 4- or 5-pored; style 3.2–4.5 mm, stigma surrounded by anthers at anthesis. Capsules stout, straight or slightly curved outward, 4-angled, 10–18 × 2.8–3.5 mm, deeply grooved along lines of dehiscence. Seeds 0.7–0.9 mm. 2n = 14.


Phenology: Flowering Mar–Jun(–Sep).
Habitat: Sandy flats, dunes.
Elevation: 0–60 m.

Discussion

Subspecies clementiana is restricted to San Clemente Island, Los Angeles County, where it is common on dunes around the north end and down the west shore, perhaps to the south end.

Selected References

None.

Lower Taxa

None.
Warren L. Wagner +
(P. H. Raven) W. L. Wagner & Hoch +
Oenothera guadalupensis subsp. clementina +
0–60 m. +
Sandy flats, dunes. +
Flowering Mar–Jun(–Sep). +
Syst. Bot. Monogr. +
Camissonia guadalupensis subsp. clementina +
Camissoniopsis guadalupensis subsp. clementiana +
Camissoniopsis guadalupensis +
subspecies +