Ceanothus verrucosus Nutt.

국표에 없다.

Ceanothus verrucosus is a species of shrub in the family Rhamnaceae known by the common names wart-stem ceanothus, barranca brush, coast lilac and white coast ceanothus. It is endemic to northwestern Baja California and San Diego County, where it grows in coastal sage scrub and coastal succulent scrub habitats. It is considered a rare species north of the international border, as most of the valuable coastal land that hosts this plant in the San Diego area has been claimed for development. In California, several extant populations still remain scattered around the region, such as one protected at Torrey Pines.

Description

Note the warty stipules at the base of the leaf.

This plant is an erect, open shrub approaching 3 meters in maximum height. It has gray-brown, minutely hairy stems with conspicuous wart-like stipules at the base of each leaf. The evergreen leaves are alternately arranged, each up to about 1.5 centimeters long, with a characteristic blunt tip. The margin may be entire or have 9 to 12 teeth. The inflorescence is a cluster of flowers up to 2 centimeters long. The flower is white except for its characteristic dark center, which is the nectar disk and ovary. The flowers give off a fragrance similar to mild Alyssum. The fruit is a capsule about half a centimeter long.

Taxonomy

This species is in the subgenus Cerastes of Ceanothus, which means that this species lacks a basal burl and is killed by fire, but rapidly sprouts from seeds induced to germinate by fire. The process to germinate seeds by heat can be replicated by placing seeds in boiling water.

 

Ceanothus verrucosus - Wikipedia

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