Parr 3, 1908] GROSSULARIACEAE 
Leaves with usually rounded lobes; sepals 
usually obtuse, without gland-tipped hairs 
or with only traces of them; plants of the 
United States. 
Ovary covered with gland-tipped hairs; 
sepals greenish-white, seldom purple- 
margined ; berry black, without bloom. 
Ovary smooth; some or all of the sepals 
usually purple-margined ; berry of a light 
blue color due to a heavy bloom. 
Ovary smooth; hypanthium and sepals together less than 
lcm. long. 
Bracts obovate, the broad summit several-toothed. 
Bracts, except sometimes a few of the lowermost, linear- 
oblong to lanceolate, usually acute and entire, though 
often glandular-ciliate. 
Sepals longer than the hypanthium. 
Leaves smooth above, the margin with gland-tipped 
hairs. 25 
Leaves, under a lens, with some scant pubescence 
above, the margin without gland-tipped hairs. 
Sepals equaling or shorter than the hypanthium. 
Leaves rounded, truncate, or even cordate at the 
base, the sinus shallow and widely open; glands 
of the herbage usually sessile; hypanthium and 
sepals together 5-6 mm. long in the dried flower. 27. 
Leaves deeply cordate at the base, the sinus usually 
closed, both surfaces, as wellas the young shoots, 
and especially the petioles, provided with stout, 
gland-tipped, usually scattered hairs; hypan- 
thium and sepals together 8-10 mm.inlength. 28. 
** Anthers with at most a mere callus at the apex. 
t+ Hypanthium smooth, yellow, three or more times as long as 
thick; leaves involute in vernation. (AUREA.) 
Flowers sessile or very nearly so. 29. 
Flowers distinctly pedicelled. 
Hypanthium 1-1.5 times as long as the sepals. 30. 
Hypanthium about twice as long as the sepals. 
Rachis glabrous. 31. 
Rachis villous or puberulent. 
Rachis and pedicels villous. gee 
Rachis puberulent ; pedicels glabrous. 33. 
tt Hypanthium usually hairy, not yellow, or if yellow, less 
than twice as long as thick ; leaves plicate in vernation. 
{ Axis of the raceme straight and stiff, 1 cm. long or less; 
leaves without glands, (TORTUOSA.) 34. 
ti Axis of the raceme flexuous, few to several cm. long, 
except in depauperate specimens ; leaves usually with 
glands. 
§ Leaves with scattered, sessile, amber-colored, wax- 
like, non-exudating glands on both surfaces. 
(AMERICANA.) 
Bracts of the raceme, except sometimes the lowermost, 
broadest below the middle and devoid of glands, or 
1-3 glands occasionally present ; sepals and petals 
yellowish-green. 35. 
Bracts of the raceme usually broadest above the mid- 
dle, abundantly provided with large sessile glands 
on the lower surface; sepals and petals canary-yellow. 36. 
§§ Leaves, when with glands, not as described above. 
(SANGUINEA.) 
Ovary glabrous. 
Ovary with gland-tipped hairs and sometimes other 
pubescence also. 
Hypanthium and sepals greenish-white, both 
together 5 mm. or less in length, the sepals 3-4 
times the length of the hypanthium, 
Hypanthium and sepals red or reddish, rarely 
white, usually much longer than described 
above, the sepals at most twice as long as 
the hypanthium. . 
Sepals longer than the hypanthium ; ovary with 
only gland-tipped hairs, or the white gland- 
less hairs, if present, sparse and curled; 
style glabrous. 
Outstretched hypanthium and calyx in dried 
specimens 6 mm. or less in length. 
QOutstretched hypanthium, and calyx in dried 
specimens 8-10 or even 12 mm. long. 
26. 
37. 
38. 
39. 
R. 
R. 
mr OO 
R 
195 
Viscosissimunt. 
. Halli. 
. Dugesiz. 
Orizabae. 
. affine. 
rugosum. 
. ctliatum, 
. chihuahuense. 
. aureum, 
. gracillimum. 
. odoratum. 
. fontinale. 
tortuosum., 
. americanum. 
. Nelsont. 
. Brandeget. 
. Wolft. 
. nevadense. 
