308 



ERICACEAE 



columnar; stigma minute. Fruit fleshy and drupe-like, with a papillose or warty peri- 

 carp, and a 5-celled (or fewer by abortion) stone. [Name Greek, meaning Arbutus and 

 grape, referring to the Arbutus-like plants and the edible fruit.] 



An American genus of about 20 species, chiefly natives of Mexico. Type species, Comarostaphylis arguta 

 Zucc. 



1. Comarostaphylis diversifolia (Parry) Greene. California Comarostaphylis, 



Fig. 3692. 



Arctostaphylos arguta var. diversifolia Parry, Proc. Davenport Acad. 4: 35. 1884. 

 Arctostaphylos diversifolia Parry ex A. Gray, Syn. Fl. N. Amer. ed. 2. 2^: 397. 1886. 

 (Jomarostaphylis diversifolia Greene, Bull. Calif. Acad. 2: 406. 1887. 



Arborescent shrub, 2-4 m. high, with shredded bark and finely grayish-tomentose branch- 

 lets. Leaves elliptic, 3-9 cm. long, rounded, obtuse or rarely acute at apex, narrowed at base, 

 serrulate to serrate-dentate and often revolute on the margin, glabrous or sparsely puberulent 

 on the midvein above, finely tomentose beneath and on the short petiole ; racemes usually solitary 

 and terminal, 4-8 cm. long, the rachis and pedicels tomentose ; bracts with broad scarious mar- 

 gins ; calyx tomentulose, the lobes lanceolate, 2 mm. long, much exceeding the tube, strongly 

 reflexed in fruit ; corolla 5-7 mm. long ; stamens included, the filaments hairy below the middle ; 

 ovary short-pubescent ; drupe globose, 4-6 mm. in diameter, granular-rugose, red. 



Slopes of canyons. Upper Sonoran Zone; Santa Monica Mountains, California, southward to northern Lower 

 California; also on the adjacent islands. Type locality: Jamul Valley, San Diego County, California. April-May. 



14. XYLOCOCCUS Nutt. Trans. Amer. Phil. Soc. II. 8: 358. 1843. 



Shrubs with erect branching stems and shreddy bark. Leaves alternate or opposite, 

 persistent, horizontal, entire with revolute margins. Flowers in terminal simple or 

 branching panicles. Bracts small, scale-like. Calyx persistent, deeply 5-lobed or rarely 

 4-lobed. Corolla urceolate, 5-lobed or rarely 4-lobed, the lobes small, spreading or re- 

 curved. Stamens 10 or rarely 8, included ; anthers broad, each sac with a slender awn. 

 Ovary 5-celled or rarely 4-celled, seated on a disk, pubescent; style elongate; stig-ma 

 minute. Fruit a dry drupe, with a smooth pericarp and a thin pulp ; nutlets united into a 

 solid stone. 



A genus of 2 species, inhabiting southern California and Lower California. Type species, Xylococcus bicolor 



Nutt. 



1. Xylococcus bicolor Nutt. Mission Manzanita. Fig. 3693. 



Xylococcus bicolor Nutt. Trans. Amer. Phil. Soc. II. 8: 259. 1843. 

 Arctostaphylos Veatchii Kell. Proc. Calif. Acad. 2: 19. 1863. 

 Arctostaphylos bicolor A. Gray, Proc. Amer. Acad. 7: 366. 1868. 

 Arctostaphylos Clevelandii A. Gray, Syn. Fl. N. Amer. 2^: 29. 1878. 



Arborescent shrub, 2-3 dm. high, with the bark persistent and shredded and the branchlets 



3690 

 3690. Gaultheria Shallon 



3691. Arbutus Menziesii 



7/ 3692 

 3692. Comarostaphylis diversifolia 



