1^4 HEATH FAMILY 



thick, rigid, ovate or oblong, entire, V/2 to 2 in. long, on peti- 

 oles % to 24 m - long. Staminate flowers in cup-like bracts 

 of slender clustered spikes (aments), these becoming pen- 

 dent and tassel-like. Pistillate flowers on separate plants, 

 the globose black and glabrous ovaries sessile in the bracts 

 of recurving spikes. 



The Bear Brush, an evergreen, nearly glabrous shrub 5 to 

 10 ft. high, is common around Yosemite Valley and forms 

 thickets near the head of Nevada Falls. It also occurs at 

 other places of moderate altitude. G. congdonii Eastw. grows 

 along the new Coulterville road, but probably below our 

 limits. Its wavy-margined leaves are silky-pubescent be- 

 neath. 



ERICACEAE. Heath Family. 



Trees, shrubs, and perennial herbs. Leaves simple, mostly 

 evergreen and stiff, sometimes fleshy or scale-like. Flowers 

 mostly regular, the parts in 5's or 4's. Stamens free from the 

 corolla, as many or twice as many as its parts. Anthers 

 mostly opening by terminal holes, often with 2 horns. Ovary 

 1 to 10-celled, becoming a capsule or berry. 



A. Petals distinct to "base (corolla choripetalous) . 

 Flowers in terminal globose or flat-topped clusters. 



Leaves toothed; stems scarcely woody 1. Chimaphila. 



Leaves entire; stems woody; shrub 7. Ledum. 



Flowers in cylindric spikes or racemes. 



Ovary 5-celled 2. Pyrola. 



Ovary 1-celled; no green foliage 3. Pleuricospora. 



B. Petals united (corolla sympetalous). 



Plants reddish, without green leaves. 



Flowers over y 2 in. long 4. Sarcodes. 



Flowers not T A in. long 5. Pterospora. 



Plants with ordinary green leaves. 

 Stamens much exceeding corolla. 



Tall shrub; flowers 1 ]/ 2 to 2 in. long 6. Rhododendron. 



Low shrub; flowers not J A in. long 9. Bryanthus. 



Stamens shorter than corolla. 

 Ovary free from calyx. 



Flowers open bowl-shaped; low shrubs. 



Leaves J A to 1 in. long, opposite 8. Kalmia. 



Leaves }i in. long, scale-like, 4-ranked 10. Cassiope. 



Flowers cylindric, in racemes; tall shrub 11. Leucothoe. 



Flowers jug-shaped, narrowed at orifice; stems 



red 12. Arctostaphylos. 



Ovary adherent to calyx 13. Vaccinium, 



1. CHIMAPHILA. Pipsissewa. 

 Low evergreen perennials, scarcely woody, with thick 

 shining leaves scattered along the short stems. Flowers 



