HEATH FAMILY. 311 



1. L. glandulosum Nutt. Low, 3 to 5 ft. high; leaves rather thickly cloth- 

 ing the stems, oblong, acute at each end, mucronate at apex, 1 to 2*4 in. 

 long, green and glabrous on ffoth sides, or light colored beneath with a gland- 

 dotted felt; petals elliptic-ovate, 2% to 3 lines long; filaments ciliate toward 

 the base; capsule oval, nearly 2 lines long. 



Sierra Nevada, 4,000 to 10,000 ft., and from Pt. Eeyes northward along the 

 coast to Oregon. Poisonous to sheep. 



5. RHODODENDRON L. 

 Ours shrubs with alternate entire leaves crowded on the flowering branches. 

 Flowers in umbels or corymbs, from terminal buds with thin deciduous scales. 

 Calyx very small. Corolla funnelform to campanulate, cleft, often somewhat ir- 

 regular. Stamens 5 or 10 ; filaments filiform ; anthers short, without awns or 

 appendages. Style filiform; stigma capitate or somewhat lobed. Fruit a septi- 

 cidal 5-celled capsule, the valves separating from the columella. (Greek rhodos, 

 rose, and dendron, a tree.) 



Deciduous; flowers commonly wnite; stamens 5 1. R. occidentale. 



Evergreen; flowers rose-purple; stamens 10 2. R. calif ornicum. 



1. R. occidentale Gray. Western Azalea. Shrub, 3 to 8 ft. high; leaves 

 narrowly or broadly obovate, 1 to 4 in. long, ciliate, otherwise nearly glabrous; 

 flower buds terminal, surrounded at base by leaf buds which give rise to the 

 shoots of the season; calyx 5-parted, its lobes oblong or oval; corolla white, 

 or sometimes pink, 1% to nearly 2 in. long, 5-cleft, slightly irregular, the upper 

 lobe with a large yellow splotch; tube conspicuously funnelform, glandular- 

 viscid outside; capsule oblong, '% in. long. 



Middle and seaward Coast Eanges, commonly on stream banks: Santa Cruz 

 Alts. ; Marin Co.; Napa Valley; Sonoma Co. and northward. Also in the 

 Sierra Nevada. In the Bay region the white-flowered form usually occurs in 

 shade or in deep canons, the pink form higher on canon sides or in sunny 

 situations. Feared by sheepmen as poisonous. 



2. R. calif ornicum Hook. California Eose Bay. Erect, 4 to 8 ft. high; 

 leaves coriaceous and evergreen, oblong or elliptic, green above, rusty or lighter 

 beneath, 3 to 4 in. long; flower buds 1 in. long, the scales ovate; corolla tur- 

 binate-campanulate, rose-purple, the upper lobe greenish-dotted within, 1~¥± in. 

 long; stamens 10, not exserted; ovary densely pubescent with dark red or 

 rusty hairs; capsule nearly or quite glabrous, red, % to % in. long, 2y 2 lines 

 in diameter. 



Seaward Coast Range: Waddell Creek; Pescadero; Mt. Tamalpais and 

 northward to Mendocino and Humboldt cos. Reported poisonous to sheep. 



Leucothoe davisiae Torr. Shrub 3 to 4 ft. high; leaves coriaceous, oblong, 1 

 to 3 in. long; flowers white, pendulous, in erect racemes 2 to 4 in. long; corolla 

 ovate with narrow orifice, 3 lines long; anthers 2-mucronate, not awned. — Sierra 

 Nevada, about 7,000 ft., rather rare. 



CASSIOPE mertensiana Don. Heath-like fruticulose evergreen, with scale- 

 like triangular leaves (1 line long) crowded and imbricated on the stems in four 

 ranks; corolla white, open-campanulate, nodding on the apex of an erect naked 

 peduncle; stamens 10, anthers awned. — Alpine in the Sierra Nevada and north- 

 ward. 



Bryanthus breweri Gray. Heath-like fruticulose evergreen 4 to 12 in. 

 high; leaves linear, 3 to 7 lines long; corolla rose-color, deeply saucer-shaped, 

 5-cleft nearly or quite to middle, the lobes recurving from the tip; stamens 



