ERICACEAE. 299 
Erica. Heath. 
(Family Ericaceae}. 
Typically, small bog shrubs: 
evergreen. Twigs very slender, 
more or less ridged below the 
leaves: pith very small, continu- 
ous. Buds minute, solitary, ses- 
sile, ovoid, with 2 or 3 exposed 
scales. Leaf-scars whorled, mi- 
nute, half-round: bundle-trace 1: 
stipule-scars lacking. Leaves 
small, mostly, except the lower- 
most, very revolute or folded so 
that the edges meet down the 
back, rather longer than the in- 
ternodes except on _ elongated 
shoots. 
Winter-character references to 
Erica Tetraliz:—Bosemann, 33; 
Fant, 52. ' 
Like heather, the true heaths 
have barely secured a foothold in 
this country,—on the coast. 
1. Leaves in whorls of 3. (1). E. cinerea. 
Leaves in whorls of four. 2. 
2. Leaves glandular-bristly. (Bell ey (2). KE. Tetralix. 
Leaves not glandular. (3). E. carnea. 
