Yucca Photos

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WAYNE'S WORD Volume 9 (Number 2) Summer 2000

More Yucca Photos

Chaparral yucca (Yucca whipplei) on a remote ridge in the rugged San Gabriel Mountains of southern California. Several camouflaged big-horn sheep are standing on the rocky outcrop in the distance. Unfortunately, they are not clearly discernible at this resolution.

Feathery stigma lobes and central stigmatic depression of the chaparral yucca (Yucca whipplei). The female yucca moth (Tegeticula maculata) presses a pollen mass into the central stigmatic orifice, thus pollinating the plant and insuring seed production and food for her larva.

Mojave yucca (Yucca schidigera), a native species in coastal and desert areas of San Diego County. Unlike the chaparral yucca (Y. whipplei), it produces a compact flower cluster, a distinct basal trunk on old specimens, and leaves with conspicuous marginal fibers. Although its range overlaps that of Y. whipplei, it requires a different species of yucca moth (Tegeticula yuccasella)

Stigma lobes and central stigmatic orifice of the Mojave yucca (Yucca schidigera). The female yucca moth (Tegeticula yuccasella) forces a little mass of pollen down into the orifice so that it makes contact with the recessed receptive area, thus pollinating the plant.

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