Calluna, | _ XLV, ERICACES. 285 
along the upper branches, forming irregular leafy racemes. Calyx 
coloured like the corolla, and concealing it. C. Erica, DC. 
The most widely distributed of all the Heaths,extending over central 
and northern Europe to the Arctic Circle, eastward to the Ural, and 
westward to the Atlantic. Also occurring in the Azores, Greenland, 
and very rarely in north-eastern America, in Labrador and Massa- 
chussets. In Britain very abundant. Fl. summer. It varies in the 
same spot, either quite glabrous or more or less downy, or even hairy. 
eo 
IX. PYROLA. WINTERGREEN. 
Low herbs, with a slender, shortly creeping stock ; orbicular or ovate, 
nearly radical leaves; and white or greenish, drooping flowers, either 
solitary or several in a short raceme, on leafless, erect peduncles. Sepals 
5, small. Petals 5, distinct or slightly joined at the base, forming at 
first a spreading corolla, which persists round the young capsule, 
assuming a globular shape. Stamens 10. Capsule 5-celled, opening 
‘by slits in the middle of the cells. 
A -small genus, confined to the northern hemisphere both in the New 
and the Old World, allied to Hricacece in all essential characters, although 
so different in habit and foliage. It has been divided by modern 
botanists into almost as many genera as it has species. 
Flowers solitary : . : . . : . . L. P. uniflora. 
Flowers several in a raceme. 
Leaves ovate, pointed. Flowers small, in a close, one-sided 
‘raceme, « : : - : : - Oo. P. secunda. 
Leaves ovate or rounded, obtusé. Flowers in a loose raceme, 
usually few. 
Style much longer than the corolia, and curved. ; . 2 P. rotundifolia. 
Style longer than the corolla, and praia : : : . 3. P. media. 
Style not longer than the corolla. ‘ ‘ P . 4 P. minor, 
1. P. unifiora, Linn. (fig. 648). One-flowered W.—Leaves of P. 
minor, but rather smaller. Flower rather large, always solitary on the 
peduncle, drooping, nearly white, and very fragrant ; the petals ovate, 
slightly connected at the base. The pores of the anthers form little 
protruding tubes much more prominent than in the other species, 
although they are sometimes observable even in P. minor. Style nearly 
straight, with a broad 5-lobed stigma. Moneses grandiflora, Salish. 
In woods, in northern and Arctic Europe, Asia, and America, and 
along the high mountain-ranges of central Europe. In pine woods 
from Perth and Aberdeen northwards, found only in Scotland. #7. 
summer. 
2. P. rotundifolia, Linn. (fig. 644). Larger W.—A larger plant 
than P. minor, with larger and whiter flowers, and the petals ‘more 
spreading, but chiefly distinguished from it by the long, protruding, 
much curved style, usually at least twice as long as the capsule, with a 
much smaller stigma, with short, erect lobes. 
In similar situations and with nearly the same range as P,. minor; 
extending farther into central Asia, even to the Himalaya, but not oe 
frequent in Europe. Rare in Britain, though occurring in isolated spots 
between Kent and Inverness, and at Westmeath i in Ireland. Fl. summer. 
[A remarkable variety (P. marituna, Ken.), with smaller leaves, many 
Ra 
