Clarkia arcuata

(Kellogg) A. Nelson & J. F. Macbride

Bot. Gaz. 65: 62. 1918.

Common names: Glandular clarkia or fairyfan
Basionym: Oenothera arcuata Kellogg Proc. Calif. Acad. Sci. 1: 58. 1855
Synonyms: Godetia hispidula (S. Watson) S. Watson O. hispidula S. Watson
Treatment appears in FNA Volume 10.
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Stems erect, to 8 cm, glabrous or puberulent. Leaves sessile; blade linear to narrowly lan­ceolate or oblanceolate, 1.5–6cm, surfaces glabrate. Inflo­rescences racemes, axis recurved at tip in bud; buds pendent. Flowers: floral tube 3–7 mm, puberulent with spreading hairs and shorter glandular hairs; corolla bowl-shaped, petals pinkish lavender, lighter prox­imally, often with dark reddish spot at base, broadly obo­vate or obdeltate, 10–30 mm; stamens 8, subequal; ovary 8-grooved, sparsely puberulent, hairs mostly glan­dular; stigma exserted beyond anthers. Capsules 10–35 mm; pedicel 5–15 mm. Seeds brown, 2 mm, minutely scaly, crest 0.5 mm, prominent. 2n = 14.


Phenology: Flowering Apr–Jun.
Habitat: Openings in woodlands and chaparral, serpentine soil.
Elevation: 0–1600 m.

Discussion

Clarkia arcuata is primarily distributed in the foothills of the Sierra Nevada from Mariposa to Tehama counties, sparsely south to Kern County, and with one disjunct occurrence in Shasta County; it has also been reported from Napa County.

Clarkia arcuata is morphologically most similar to C. lassenensis, from which it differs in fruit char­acter­istics. The two species have distinct areas of distribution and attempts to produce hybrids have not been successful.

Selected References

None.

Lower Taxa

None.
... more about "Clarkia arcuata"
Harlan Lewis† +  and Peter C. Hoch +
(Kellogg) A. Nelson & J. F. Macbride +
Oenothera arcuata +
Glandular clarkia or fairyfan +
0–1600 m. +
Openings in woodlands and chaparral, serpentine soil. +
Flowering Apr–Jun. +
Godetia hispidula +  and O. hispidula +
Clarkia arcuata +
Clarkia subsect. Flexicaules +
species +