ERICACEAE. 271 
LrepuM. Labrador Tea. 
(Family Ericaceae). 
Bog shrubs: evergreen. Twigs 
rather slender, rounded: pith 
small, somewhat 3-sided, spongy, 
brownish. Buds solitary, sessile, 
somewhat compressed, small, with 
about 3 exposed scales; the ter- 
minal infiorescence buds _ large, 
round or ovoid, with some 10 
broad mucronate glandular-dotted 
scales. Leaf-scars alternate, most- 
ly low, half-elliptical or bluntly 
cordate, the lowest transversely 
linear: bundle-trace 1: _ stipule- 
scars lacking. ‘Leaves simple, en- 
tire, elliptical to narrowly oblong. 
The small ovoid or conical-oblong 
5-celled capsules, dehiscing from 
the base, may be present in win- 
ter. 
Winter-character references to 
Ledum palustre. Bosemann, 35; 
Fant, 51. Unlike most of the Ericaceae, but agreeing with 
Gaultheria, Ledum, possesses a distinctly spongy pith. A sug- 
gestion of this condition, however, is seen when the twig of 
some blueberries is split. 
ay 
2. 
3. 
Leaves very rusty woolly beneath, revolute. 2. 
Leaves glabrous, but glandular-dotted beneath. 3. 
Leaves broad: capsules oblong. (1). L. groenlandicum. 
Leaves narrow: capsules ellipsoid, glandular. (2). L. palustre. 
Leaves long (4 cm.), much whitened and obscurely gland- 
ular beneath. L. columbianum. 
Leaves small (2 cm.), less whitened but more glandular 
beneath. (3). L. glandulosum. 
