DIAPENSIACEAE. 155 
3. Leaves white beneath: fruit under 10 mm. VV. Oxycoccos. 
Leaves less whitened: fruit over 10 mm. V. macrocarpon. 
4. Leaves pointed, serrulate, fruit blackish. V. Myrsinites. 
Leaves blunt or notched, entire: fruit red. V. Vitis-Idaea. 
5. Leaves blunt, small (1.5 cm.): plant low. V. uliginosum. 
Leaves acute, or else plants distinctly larger. 6. 
6. Leaves glossy, narrowly revolute, veiny. V. arboreum. 
Leaves dull or else not revolute. 7. 
7. Leaves small (scarcely 4 cm.) : twigs granular. 8. 
Leaves larger (often 5 or 6 cm. long). 9. 
8. Loosely villous. V. canadense. 
Glabrous, or crisp-pubescent in lines. V. pennsylvanicum. 
9. Twigs somewhat granular or wrinkled. 10. 
Twigs not granular: leaves veiny beneath. V. stamineum. 
10. Tall: rather persistently hairy. V. corymbosum. 
Dwarf: twigs and leaves glabrescent. V. vacillans. 
Family DIAPENSIACEAE. 
An insignificant small family. Galax leaves are among the 
autumnal commodities of florists. 
DIAPENSIA. 
Evergreen matted low alpine plants with small subopposite 
crowded sessile glabrous oblong-spatulate entire leaves; no sti- 
pules; perfect white bell-shaped gamopetalous flowers, large for 
the plant, solitary on slender scape-like peduncles; and ovoid 
leathery capsules with small seeds. 
Leaves revolute, outcurved. D. lapponica. 
GALAX, 
Evergreen acaulescent herbs with clustered long-stalked 
rounded moderate glossy firm leaves bronzing in winter; small 
and inconspicuous perfect gamopetalous racemed flowers; and 
small capsules. 
‘Leaves wavy-margined, blunt, cordate. G. aphylla. 
PYXIDANTHERA, Pyxie. 
Low trailing deciduous suffruticose plants with crowded or 
alternate small sessile entire leaves; numerous small white or 
