44 ERICACEAE 



wall Creek, Metz, Monterey Co.; La Panza, San Luis Obispo Co. San Jacinto Mts. : Heniet Val- 

 ley (ridges above) , Wolf 1953. San Diego Co. : Cuyamaca Mts. ; Laguna Mts. ; Live Oak Sprs., se. 

 San Diego Co., Jepson 11,833 ; Jaeumba, Wolf 190G ; Campo, Wolf 2158. 



Eefs. — Arctostaphylos pdngens H. B. K., Nov. Gen. & Sp. 3:278, t. 259 (1819; cf. Bull. 

 Torr. Club 29:597), type loc. Moran and Villalpando, Mex., Humboldt 4" Bonpland (cf. Sprague, 

 Kew Bull. Misc. Inform. 1924:22) ; Jepson, Man. 747 (1925). Uva-ursi pungens Abrams, Bull. 

 N. Y. Bot. Gard. 0:432 (1910). A. montana Eastw., Proe. Cal. Acad. ser. 3, Bot. 1:83 (1897), 

 type loc. trail betw. Eldridge grade and Larsens [now Eidgecrest], Mt. Tamalpais, Eastwood; 

 I.e. 1:127 (1898). Uva-ursi montana Abrams, N. Am. Fl. 29:95 (1914). 



Aectostaphylos bakeri Eastw., Lflts. W. Bot. 1:115 (1934), tj-pe loc. Occidental (2 mi. e. 

 of, in a cypress grove, on serpentine), Sonoma Co., J. T. Hoicell 10,955; branchlets and inflores- 

 cence glandular-bispidulous; leaf -blades elliptic, scabridulous, 1^ inches long; pedicels glabrous; 

 berry glabrous (ex char.). 



15. A. glauca Lindl. Great-berried Manzanita. Shrub 6 to 12 feet liigli, or 

 almost arborescent and up to 22 feet high, with a trunli 4 to 15 inches in diameter ; 

 leaves glaucous and glabrous, their blades orbicular or elliptical to broadly ovate, 

 obtuse or acute at apex, obtuse, truncate or subcordate at base, 1^4 to 1% inches 

 long; petioles 3 to 7 lines long; panicle broader than high, frequently very com- 

 pact ; rachis glabrous, sometimes a little glaucous ; pedicels covered with stipitate or 

 subsessile glands; flowers rather large; corolla white or rarely pale pink; ovary 

 glabrous but densely glandular ; berry globose or elliptic, I'ather densely covered 

 with minute glands and very viscid, 5 to 8 lines broad ; pulp scanty ; .stone solid, 

 smooth. 



Dry montane slopes, 1400 to 5000 feet : Mt. Diablo and south through the Coast 

 Ranges to San Luis Obispo Co.; cismontane and intramontane southern California; 

 Conchilla Mts. South to Lower California. Dec. -Apr. 



Field note. — Arctostaphylos glauca, which is geographically segregated from species of siini- 

 lar aspect, may be recognized in the field by its whitish foliage and by the single stone of its 

 berry which is globose and smooth, thus differing from other species in which the nutlets though 

 concreted give striking evidence of concretion by ridges and channels and by the degree of mutual 

 attachment or fusion. This species becomes a large shrub and occasionally a small tree. Branches 

 along the ground layer readily according to P. W. Peirson. 



The northernmost locality is Mt. Diablo. In Donner Canon one finds individuals 10 to 16 

 feet high with trunks 9 to 15 inches in diameter at the ground. There is also in Donner Caiion a 

 very large individual half way up to the spring that lies below the East Peak. It is 18 feet high, 

 the crown 24 feet broad, the tnmk 63 inches in circumference at four inches above the ground. 

 It branches freely, fully, densely. In the Mount Hamilton Eango this species is common, espe- 

 cially on Cedar Mt., where it is the most abundant chaparral species, everywhere giving character 

 to the country. It is there, as elsewhere, glaucous but shrubs of different shades are often found 

 in close proximity, yellowish, light green, dark green and lavender. — Jepson Field Book, 35:26 

 (1918) : 38:59 (1920) ; 34:191 (1917). ms. In the lower part of Mill Creek Caiion, San Bernar- 

 dino Mts., is a small tree 22 feet high with a trunk 3 feet 3 inches in circumference at one foot 

 above the ground (Jepson Field Book, 27:106. 1913. ms.). 



Locs. — South Coast Eanges: Donner Caiion, Mt. Diablo, Jepson 7592; Las Trampas Eidge, 

 Contra Costa Co., Jepson 6853; Cedar Mt., Mt. Hamilton Eange, Jepson 6219; Loma Prieta, 

 Santa Cruz Mts., Davy 504; Santa Lucia Creek, Santa Lucia Mts., Jepson; Peachey Caiion, San 

 Luis Obispo Co., Davy. Cismontane and intramontane S. Cal.: Castaic Creek (mts. above), n. 

 Los Angeles Co., Jepson 8929 ; Santa Inez Mts. ; Cajon Pass, Nervlon 465 ; Mill Creek, San Ber- 

 nardino Mts., Jepson 5587; Indian Canon, CoUins Valley, ne. San Diego Co., Jepson 8857; Escon- 

 dido, C. r. Meyer 686; Warner Eanch, e. San Diego Co., Jepson 8527; San Felipe Valley (uw. 

 head of), Jepson; Alpine, San Diego Co., G. L. Fleming ; Cuyamaca Mts., Palmer. ConchUla Mts. 

 (nw. side of Colorado Desert) : Piiion Well grade. 



Eefs. — Arctostaphylos glauca Lindl., Bot. Eeg. sub t. 1791 (1836), type from Cal., Doug- 

 las; Jepson, Fl. W. Mid. Cal. 372 (1901), ed. 2, 314 (1911), Man. 746 (1925). Vva-ursi glauca 

 Abrams, Bull. N. Y. Bot. Gard. 6:433 (1910). A. glauca var. eremicola Jepson, Madrono 1:78, 91 

 (1922), type loc. Piiion Well mountains, n. Colorado Desert, Jepson 6004; Man. 746 (1925). 



16. A. viscida Parry. White Manzanita. Shrub 4 to 10 feet high, with very 

 striking contrast between the white foliage and deep red crooked branches ; branch- 

 lets and peduncles glaucous and very glabrous, usually reddish, the rachis of the 

 raceme or panicle glandular, rarely nonglandular ; leaves very white-glaucous, gla- 

 brous, the blades elliptic, varying to orbicular or round-ovate, obtuse or abruptly 



