ERICACEAE 121 



GAULTHERIA. Wintergreen. 



Underground trailing plants with erect scarcely woody 

 short stems few-leaved at top, or shrubs, with rather 3-sided 

 branches; alternate somewhat raised crescent-shaped or sub- 

 elliptical leaf-scars with 1 bundle-trace; no stipule-scars; ovoid 

 solitary buds with several pairs of scales; slightly revolute 

 more or less toothed short-stalked leaves; pinkish urceolate 

 perfect flowers in terminal racemes or axillary; and thin- 

 walled capsules in fleshy berry like calyx. 



1. Erect stems short and simple, few-leaved. G. procumbens. 

 Bushy. 2. 



2. Leaves round or cordate at base: fruit blackish. G. Shall on. 

 Leaves cuneate: fruit blue. G. Veitchiana. 



ERICA. Heath. 



Usually delicate evergreen shrubs with brown close wood 

 with minute diffused ducts, sometimes sparser in autumn, and 

 fine medullary rays; slender twigs with raised round leaf -scars 

 with 1 bundle-trace; no stipule-scars; small solitary budn; 

 small narrow spreading short-stalked leaves decurrent as 

 raised ridges on the stem; small perfect urn-shaped mostly 

 pinkish gamopetalous flowers crowded at the ends of the 

 branches; and small roundish capsules with small seeds. 



1. Leaves bristly, in whorls of 4. E. Tetralix 

 Leaves not bristly. 2. 



2. Leaves in whorls of 4: stamens protruding. E. carnea 

 Leaves in whorls of 3: stamens not protruding. E. cinerea. 



CALLUNA. Heather. Ling. 



Delicate small evergreen shrubs with slender terete twigs; 

 minute angular homogeneous pith; opposite roundish minute 

 leaf -scars with 1 bundle-trace; no stipule-scars; very small 

 acutely auricled sessile entire overlapping leaves; minute 

 rounded solitary buds with few scales, generally developing 

 the first season; small perfect deeply parted white or reddish 

 gamopetalous flowers along the branches in a feathery tuft, 

 drying on the stem; and small rounded 4-celled capsules. 



