Parr 3, 1908] GROSSULARIACEAE 
i 
Plant trailing; shoots clothed with weak gland-tipped 
bristles ; anthers about 2 mm. long. 
§§ Ovary smooth or with weak glandless or gland-tipped hairs, 
these not developing into spines on the fruit. 
° Sepals twice the length of the hypanthium or more; petals 
red throughout, (MADRENSES.) 
°° Sepals less than twice the length of the hypanthium; 
petals yellow or greenish, sometimes with purple 
margins. (MICROPHYLLAE.) 
Length of the dried flower, from the base of the ovary 
to the apex of the extended sepals, 8 mm. or more; 
hypanthium longer than broad, usually twice as long. 
Hypanthium 2.5-3.5 mm. broad in anthesis, and in- 
cluding: the sepals 10-12 mm. in length; flowers 
red. 
Hypanthium narrower, or the corresponding measure- 
ments shorter, or both. 
Flowers white ; species of the Rocky Mountain re- 
gion. ; 
Flowers yellow ; species Californian. 
Hypanthium about 4 mm. long, its diameter 
about one third as much, longer than the 
sepals, sometimes nearly twice as long. 
Hypanthium about 2.5 mm. in length, when not 
shriveled almost as broad as long, equaling or 
shorter than the sepals, 
Length of the dried flower 7 mm. or less ; hypanthium 
in the fresh flower as broad as or broader than long. 
** Styles hairy toward the base. 
t Ovary bristly, the bristles, at least the larger ones, not gland- 
tipped. (CyNoSBATI.) : 
tt Ovary smooth, or occasionally pubescent, or with stalked 
glands. 
t Sepals white; filaments more than twice the length of the 
petals. (NIVEAE.) 
Filaments and anthers devoid of hairs; one-year-old shoots 
white to buff-colored. 
Filaments, and usually the anthers also, hairy ; one-year- 
old shoots reddish-brown. 
Hypanthium barely as broad as long ; ovary with neither 
glands nor hairs ; petals with the apical margin con- 
spicuously revolute ; anthers about as broad as long, 
little or not at all recurved. 
Hypanthium about twice as broad as long ; ovary with 
sessile glands, these sometimes obscured by villous 
hairs; petals with the apical margin not revolute ; 
anthers twice as long as broad, when dry strongly re- 
curved from about the middle. : 
tt ‘Sepals green or purplish, or, if not, the filaments less than 
twice the length of the petals. 
§ Stamens equaling the petals; leaf-blades usually bearing 
beneath and sometimes also above, sparingly or abun- 
dantly, minute sessile or stalked glands visible under 
a strong lens, the glands usually interspersed in the 
pubescence and often disappearing on old leaves. 
(SETOSAE.) . : 
Hypanthium narrowly tubular, 2-4 timesas long as broad, 
usually longer than the white or pinkish sepals. 
Hypanthium sparsely hirsute; bark of one-year-old 
shoots white to buff-colored. 
Hypanthium glabrous ; bark of one-year-old shoots 
usually red-brown. 
Hypanthium, during anthesis and before shriveling, 
campanulate, nearly or quite as broad as long, 
shorter than the green, greenish-white, or purplish 
sepals. 
Bark of new wood little or not at all bristly ; fowers 
well exserted from the bud-scales ; hypanthium and 
sepals together commonly 8-10 mm. long. 
Bark of new wood bristly, often very bristly ; flowers 
usually appearing almost sessile, the peduncle and 
pedicels together barely or not at all exceeding the 
bud-scales; hypanthium and sepals together com- 
monly 5-7 mm. long. ; 
§§ Stamens about twice the length of the petals or even 
longer; pubescence of the leaf-blades when present 
rarely with glands, 
Ovary villous. (RECLINATAE.) 
19, 
20. 
21. 
22. 
25, 
27. G. 
28. 
32, 
33. 
34, 
G. 
. G. 
211 
. tularensis. 
. madrensis, 
microphylla. 
lepiantha, 
lasiantha, 
quercelorum, 
. velutina. 
Cynosbati. 
missouriensts, 
nivea, 
.curvala, 
cognata, 
. Selosa. 
. irrigua. 
. oxyacanthoides. 
. veclinaia. 
