Camissonia sierrae subsp. alticola Raven

  • Authority

    Raven, Peter H. 1969. A revision of the genus Camissonia (Onagraceae). Contr. U. S. Natl. Herb. 37: 161-396.

  • Family

    Onagraceae

  • Scientific Name

    Camissonia sierrae subsp. alticola Raven

  • Type

    Type: Grassy pocket of soil in seepage over granite ledge 100 yards north of Mono Hot Springs Campground, in yellow pine forest, 6,500 ft., Fresno County, California, 8 June 1963, D. E. Breedlove 5212 (DS; isotypes, BM, GH, NY, USA, US).

  • Description

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    Latin Diagnosis - A subsp. sierrae differt: floribus parvioribus; hypanthio 1-2.2 mm. longo, ostio 0.9-2.2 mm. diametro, intus subglabro; sepalis 1.2-3 mm. longis, 0.8-1.5 mm. latis; petalis 2.2-4 mm. longis, 1.8-2.2 mm. latis, immaculatis; filamentis staminorum episepalorum 1.8-2.8 mm. longis, illis epipetalorum 0.8-1.8 mm. latis; antheris 0.6-0.9 mm. longis; stylo 2.8-5 mm. longo, glabro; stigmate 0.6-0.8 mm. diametro, sub anthesi antheris circumnexo. Chromosomatum numerus gameticus, n= 7. Autogama.

  • Discussion

    A distinctive local race, Camissonia sierrae subsp. alticola is obviously very closely related to C. sierrae subsp. sierrae but is highly autogamous and occurs at much higher elevations. I have seen a collection from Lake Merced on the Merced River of Mariposa County, 7,200 ft., Jepson 3181 (JEPS), which is very similar to Fresno County plants of subsp. alticola; additional collections from the Merced River drainage basin would make it possible to evaluate the relationship between these two series of populations.