272 ERICACEAE. 



chinks, often awned. Disk crenate-lobed or often none. 

 Ovary usually 2-5-celled; style elongated or short; 

 stigma peltate or capitate; ovules usually numerous, 

 anatropous. Fruit a capsule, berry or drupe. Seeds 

 numerous or sometimes only 1 in each cavity; endosperm 

 fleshy. 



Fruit a 5-celled berry; ovules and seeds 



several in each cavity. 1. Arbutus. 



Fruit drupaceous; ovules and seeds 1 in each 

 cavity; stones separable or coalescent. 

 Ovary and fruit papillose or warty, be- 

 coming fleshy. 2. Comarostaphylis. 

 Ovary and fruit smooth or pubescent, 



not fleshy but often mealy. 3. Uva-Ursi. 



1. ARBUTUS L. 



Trees or shrubs, with evergreen and coriaceous alter- 

 nate petiolate leaves, and white or flesh-colored small 

 flowers in a terminal cluster of racemes or panicles. 

 Bracts and bractlets scaly. Calyx small, 5-parted. 

 Corolla urceolate with 4-5 small recurved teeth. Ovary 

 on an hypogynous disk, 4-5-celled; ovules crowded on a 

 fleshy placenta projecting from the inner angles of each 

 cell. Style rather long; stigma obtuse. Fruit a many- 

 seeded berry. 



1. A. menziesii Pursh. (Madrono.) Commonly 5-10 m. high; 

 bark exfoliating, deep red; leaves glabrous, elliptic or ovate, green 

 above, glaucous beneath, 5-10 cm. long, entire or those of young 

 shoots denticulate; petioles about 1 cm. long; flowers in an ample 

 terminal panicle or dense racemes; berry fleshy, red, subglobose, 

 8-10 mm. in diameter, surface granular. 



Mount Wilson and Sturtevant trails at about 3000 feet altitude, 

 and in Los Tunas Canyon, Santa Monica Mountains. 



2. COMAROSTAPHYLIS Zucc. 



Shrubs with alternate persistent coriaceous leaves, 

 and racemose panicles of small urn-shaped flowers. 

 Calyx persistent, 4-5-lobed. Corolla urn-shaped, with 

 4-5 mostly reflexed lobes. Stamens 10 or rarely 8; 

 filaments short, dilated near the base, pubescent, with- 

 out appendages; anthers with a slender sac on each sac. 

 Ovary 5-celled. Fruit globular, fleshy, papillose or 

 warty, the 5 or fewer nutlets united into a round stone. 



