326 



VACCINIACEAE 





3735 

 3735, Arctostaphylos tomentosa 



3736 

 3736. Arctostaphylos glauca 



3737 

 3737. Vaccinium ovatum 



43. Arctostaphylos glauca Lindl. Big-berried Manzanita. Fig. 3736. 



Arctostaphylos glauca Undl. Bot. Reg. 21 : pi. 1791. 1836. 

 Xerobotrys glaucus Nutt. Trans. Amer. Phil. See. II. 8: 268. 1843. 

 Uva-ursi glauca Abrams, Bull. N.Y. Bot. Card. 6: 433. 1910. 

 Arctostaphylos glauca var. eremicola Jepson, Madrono 1: 78. 1922. 

 Arctostaphylos glauca var. puberula J. T. Howell, Leaflets West. Bot. 2: 70. 1938. 



Arborescent shrub or small tree, 2-6 m. high, with a trunk sometimes 3 dm. in diameter; 

 bark smooth, red-brown, the branchlets pale green and glaucous, glabrous or rarely sparingly 

 glandular. Leaves broadly ovate, varying to oblong or elliptic, obtuse at apex, obtuse to sub- 

 cordate at base, 2-4 cm. long, firm-coriaceous, pale green and glaucous, glabrous; petioles 7-10 

 mm. long; flowers in an ample panicle or sometimes a simple raceme, the rachis glabrous or 

 slightly puberulent; bracts triangular-lanceolate, persistent, rigid and divergent in fruit; pedi- 

 cels glandular-pubescent ; calyx-lobes ciliate or smooth on the margins ; corolla white or tinged 

 with pink, 8-9 mm. long; ovary viscid-glandular; fruit ovoid, 12-15 mm. long, very viscid, the 

 pericarp thin without granular pulp; nutlets united into a solid smooth apiculate stone, the 

 union of the nutlets marked by longitudinal lines. 



Canyon slopes, Upper Sonoran Zone; C^ast Ranges from Mount Diablo, Contra Costa County, to northern 

 Lower California. Type locality: collected by Douglas in the California Coast Ranges but definite locality not 

 known. Dec.-Feb. 



Family 115. VACCINIACEAE. 

 Huckleberry Family. 



Erect or slender trailing shrubs or trees, with scaly buds. Leaves simple, alter- 

 nate deciduous or evergreen. Flowers perfect, solitary or clustered, commonly 

 bracteate. Calyx-tube adnate to the ovary for all or the greater part of its length, 

 the limb toothed or entire. Corolla sympetalous, or rarely almost choripetalous, 

 varied as to form, but often urceolate, deciduous. Stamens twice as many as corolla- 

 lobes, epigynous or on an epigynous disk ; anthers attached dorsally, introrse, the 

 sacs prolonged at the apex into a slender tube with a terminal pore, with or without 

 dorsal awns. Ovary mainly inferior, usually crowned by an epigynous disk, 4-10- 

 celled. Style 1, filiform; stigma simple. Ovules 1 to many in each cavity, anatro- 

 pous, on axile placentae. Fruit berry-like. Seeds many, compressed, with a bony 

 seed-coat ; embryo straight, imbedded in copious fleshy endosperm. 



A family of about 20 genera and over 300 species, widely distributed through the northern and southern 

 hemispheres. 



Erect or cespitose shrubs; corolla merely toothed, cylindric or urceolate. 1. Vaccinium. 



Trailing vines; corolla deeply 4-cleft, the lobes spreading. 2 Oxycoccus. 



