Abstract
The species of the genus Arctostaphylos, like those of most polymorphic genera, show obvious relationships and aggregate themselves into well defined groups. One such group centers around Arctostaphylos canescens Eastwood. Certain species show definite affinities with A. canescens and yet are sufficiently distinct to be separated specifically from it. The particular character which brings out this relationship most strongly is that of the nascent inflorescence. In the A. canescens complex the nascent inflorescence, whether drooping or erect, is campanulate. They are borne on stout peduncles, which tend to be arcuate or recurved, frequently giving the appearance of a goose neck (Plate 1, figs. 1-6). An extensive examination of fresh and dried specimens of Arctostaphylos has revealed no other group which shows this peculiar type of peduncle. The bracts of the inflorescence are foliaceous and lanceolate. The whole structure is canescent, with some individuals possessing bristly hairs on the margin of the bracts. These characteristics give to the A. canescens group a definite aspect which renders it readily distinguishable from other species of Arctostaphylos.
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