300 BOTANICAL GAZETTE [ APRIL 
Twigs 1™™" or less in diameter, minutely pubescent, bearing at inter- 
vals of 2-8™™ whorls of three leaves. 
Leaves on petioles about 1™ in length, oblong, 4-6"™" long, 2-3™" 
wide, apparently evergreen, very thick, coriaceous, entire, smooth or 
with traces of pubescence along the margins or in the median groove 
; on the upper surface 
of the leaf, the mar- 
gins revolute, the stout 
midrib very prominent 
beneath, the blunt apex 
of the leaf bearing a 
large gland. The leaves 
bear a striking resem- 
blance in size, form, 
and texture to broad 
‘IG. 1.—Arcterica oxycoccoides (Gray) Coville. a, leaves of Chamaecistus 
the type specimen, natural size; 4, leaf from beneath procumbens, but in the 
(X 3); ¢, flower, with part of calyx and corolla cut away 3 
(X 5); d,stamen (X 10). latter plant the lower 
surface is pubescent be- 
tween the midrib and the margins, and the terminal gland is wanting. 
The terminal gland of our plant is similar to that of Vaccinium Vitis- 
/daea and the South American species of Gaylussacia. 
Inflorescence a terminal cluster of three flowers, the peduncle 6" 
long and bearing at its summit a whorl of three purplish bracts, these 
about 4"™ long, the lower half conduplicate, the upper half expanding 
into an ovate-triangular blade; pedicels about 3™ long with two 
opposite bracts near the middle, similar in size and appearance to the 
sepals. As 
Flower pentamerous. Calyx made up of lanceolate-oblong, pur- 
plish, acute sepals, pubescent at the apex on the margins and upper 
surface. Corolla cylindrical-urceolate, longer than broad, apparently 
white, about 4™" in length, the rounded lobes about one-third the 
length of the tube. Ovary globose, the style cylindrical. . Filaments 
larger toward the base, glabrous; anthers broadly oval to orbicular, 
biaristate near the base, the point of attachment to the filament, the 
dehiscence taking place through two apical pores facing the style. 
The following generic characters, observed in the foliage and inflo- 
rescence, serve to distinguish Arcterica from Cassiope and Harrima- 
nella: 
