ERICACEAE. 273 



1. Comarostaphylis diversifolia (Parry) Greene. Shrub with 

 brown shredded bark, tomentose twigs and inflorescence; leaves 

 evergreen, elliptic-ovate, 3-6 cm. long, finely serrate, glabrous above, 

 tomentose beneath; racemes 7-10 cm, long; pedicels 1-2 cm. long, 

 tomentose; fruit fleshy, deep red, rugose-granular, stone solid. 



On the islands off the coast of southern California, and from the 

 vicinity of San Diego southward into northern Lower California; 

 also within our range in Topango Canyon, Santa Monica Mountains, 

 Hasse. 



3. UVA-URSI Mill. 



Shrubs or small trees with evergreen coriaceous alter- 

 nate leaves, and small white or rose-colored flowers, in 

 racemes, spikes or panicles. Bracts and bractlets pres- 

 ent, scale-like. Ovules solitary in the cells, which be- 

 come bony nutlets or combine into a few-several-celled 

 stone. Fruit a drupe with a hard surface and a mealy 

 or almost bony pulp between it and the nutlets. {Arcto- 

 siaphylos Adans.) 



Pedicels and ovaries glabrous. 



Stone solid, broadly ellipsoid, merely angled or 

 ribbed; inflorescence and young leaves canes- 

 cent with a short pubescence. 1. U. parryana. 

 Stone lobed, depressed-globose, irregularly 

 separable into nutlets. 

 Branchlets, inflorescence and young leaves 

 canescent with a short pubescence; leaves 

 dull green. 2. U. pungens. 

 Branchlets and inflorescence with a golden 

 undument or glandular pubescent; leaves 

 yellow-green. 3. U. patula. 

 Pedicels more or less pubescent or villous; ovaries 

 pubescent or viscid. 

 Bracts firm, herbaceous or foliaceous; sepals cili- 

 ate on the margins, otherwise glabrous 

 or puberulent. 

 Fruit ovoid, viscid; stone solid; branchlets 



glabrous. 4. U. glauca. 



Fruit depressed-globose, pubescent not 

 viscid; lobed and separable; branchlets 

 pubescent or villous. 5. U. tomentosa. 



Bracts thin and scarious; sepals and herbage 



glandular- villous; stone solid, ovoid. 6. U. drupacea. 



1. U. parryana (Lemmon) Abrams. Arborescent shrub, 1-3 m. 

 high, branchlets, petioles and inflorescence canescent with a minute 

 puberulence; leaves ovate to ovate-elliptic, 20-35 mm. long; panicle 

 3-4 cm. long; bracts ovate-triangular, about 3 mm. long; pedicels 

 glabrous; fruit ovoid-globular; stone solid, broadly ellipsoid, merely 

 angled or ribbed. 



Tehachapi Mountains south to Mt. San Antonio, 

 19 



