Reproduction in a Great Basin Evening Primrose, Camissonia tanacetifolia (Onagraceae)
- 1 September 1980
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 141 (3) , 290-293
- https://doi.org/10.1086/337158
Abstract
Reproductive characteristics of C. tanacetifolia (Torrey and Gray) Raven (Onagraceae) in the Great Basin of northeast California [USA] were studied in 1978. Manipulations of flowers show xenogamy, an outcrossing breeding system. Additional data include floral morphology, pollen-ovule (P/O) ratio, nectar production and diversity of insect visitors. The low P/O ratio of 160:1 is atypical of xenogamy. Reproductive proficiency in this xenogamous species with a low P/O ratio may be explained by the viscin threads, which loosely bind pollen together and promote efficiency of pollen transfer, and by its occurrence in open or disturbed habitats. Reproductive potential was projected for the population from counts of ripe seeds per capsule, capsules per plant and plant density.This publication has 1 reference indexed in Scilit:
- Floral Parameters, Breeding System and Pollinator Type in Trichostema (Labiatae)American Journal of Botany, 1980