Camissonia brevipes subsp. pallidula (Munz) P.H.Raven
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Authority
Raven, Peter H. 1969. A revision of the genus Camissonia (Onagraceae). Contr. U. S. Natl. Herb. 37: 161-396.
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Family
Onagraceae
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Scientific Name
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Type
Type: Las Vegas, Clark County, Nevada, 25 April 1905, M. E. Jones (POM 38034).
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Description
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Description - Slender, usually branched above, the stems generally strigose. Terminal leaflet narrowly ovate to ovate. Inflorescence dense, nodding. Hypanthium 4-5 mm. long, yellow within. Sepals strigose, lacking projections, or these poorly developed. Petals 7-12 mm. long, 8-14 mm. wide, often red-dotted near the base. Anthers 4-6 mm. long. Capsule 2-4.2 cm. long; pedicel 2-10 mm. long. Gametic chromosome number, n=7. Self-incompatible.
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Discussion
Fourteen plants of this entity from Frenchman Flat, Clark County, Nevada (R 18905), were tested for self-compatibility by pollen-tube growth; all were found to be self-incompatible. Camissonia brevipes subsp. pallidula intergrades with C. brevipes subsp. brevipes over a wide area, and no evidence for reduction of fertility or for cytological abnormality has been found in the intermediate plants, in spite of the very different phenotypes of these two subspecies (Raven, Univ. Calif. Publ. Bot. 34: 84. 1962). Camissonia brevipes subsp. pallidula