ARBUTUS. CALLUNA. 277 



Tribe I. Arbutea. 

 1. ARBUTUS Linn. Strawberry-tree. 



1. A. Unedo (L.) ; bark rough, 1. elliptic-lanceolate serrate 



2. ARCTOSTAPH'YLOS A dans. 



1. A. alpina (Spr.) ; proe,umbent, 1. thin lorinkled serrate 

 fading but persistent, clusters terminal. Arbutus L. E. B. 

 2030. St. 6. 8. St. woody, trailing, long. L. obovate, netted. 

 Fl. white, hairy about the mouth. Berry smoofh, black. Dry 

 barren spots on the Highland mountains. Sh. V. 8. 



2. A. Uva-ur'si (Spr.) ; procumbent, L coriaceous obovate en- 

 tire shining evergeen, clusters terminal.- Arbutus L. E. B. 

 714. St. o. 8. St. woody, trailing, long. L. blunt, quite en- 

 tire, rigid. Fl. rose-coloured, smooth. Berry globose, scarlet, 

 superior. Dry stony mountain heaths. Sh. VI. E. S. I. 



Tribe II. Ericea. 



3. ANDROM'EDA Linn. 



1. A. polifolia (L.) ; 1. alternate lanceolate with revolute 

 margins glaucous beneath, fl. clustered terminal. E. B. 713. 

 St. slender, woody, prostrate below. Ped. variable in length. 

 Fl. drooping, ovate, pink, occasionally 4-fid and 8-androus. L. 

 evergreen, acute. Peduncles 2 or 3 times as long as the flowers. 

 Peat bogs. Sh. V. IX. E. S. L 



4. CAJLLU'NA Salisb. Ling. 



1. C. Erica (DC.) J B. 1013. C. vulgaris (Salisb.) ed. viii. 

 A low tufted shrub. L. small, sessile, closely imbricate, 

 patent, in 4 rows, keeled, each with 2 small spurs at the base, 

 nearly or quite smooth. Fl. small, shortly stalked, drooping, 

 lilac-rose-coloured or white, with the lower ped. leafy j sep. 

 and pet. oblong erect; fl. -raceme ending in a leafy shoot. 

 L. sometimes hoary (var. pubescens, Koch). The supposed 

 C. atlantica is not constant to the characters recorded, even on 

 the same bush. Dry heaths. Sh. VI. VIII. E. S. I. 



