1y4 NORTH AMERICAN FLORA 
Bracts of the racemes small, narrowed from the base to a sharp 
apex; sepals white; berry black, without bloom. 
Leaves villous-pubescent underneath, usually with only a 
shallow sinus,’ or none at all, at the base; racemes loose, 
seldom more than 5 cm. long (including the peduncle), 
commonly 6-12-flowered ; bracts usually 3~5 mmi. long. 
Leaves smooth on both surfaces or with traces of coarse 
pubescence beneath, the basal sinus usually deep; racemes 
commonly 7-12 cm. long and closely 25-50-flowered ; bracts 
usually minute and less than a millimeter in length. 
6. Ovary without glands, or the glands stalked. 
1. Sepals slightly united at the base, the hypanthium obsolete. 
* Ovary without hairs of any kind. (RUBRA.) 
Pedicels usually glandless; sepals and petals yellowish-green ; 
anther-cells distinctly separated by the broad connective, 
usually widely divergent. . 
Pedicels usually bearing a few glands; sepals usually mottled 
with purple, or purple throughout; petals red; anther-cells 
contiguous, parallel or nearly so. 
** Ovary with gland-tipped hairs, or rarely with only glandless 
hairs, (PROSTRATA.) 
Bracts nearly equaling, or sometimes exceeding, the pedicels. 
Racemes erect or ascending; berry bright-red at maturity 
and without bloom. 
Racemes reflexed, the separate pedicels again recurved up- 
ward; berry blue-black, with a bloom. 
Bracts not more than half the length of the pedicels. 
Sepals about 2-2.5 mm. long, smooth on the outside ; petals 
with rhombic blade on a rather broad stalk, the whole 
much longer than broad ; berry red. 
Sepals about 3-4 mm. long, hairy on the outside; petals 
fan-shaped with incurved sides, as broad as or broader 
than long; berry dark-purple or black. : 
Sepals with glanduliferous hairs on the outside ; petals 
nearly twice as broad as long; berry without bloom. 
Sepals without glanduliferous hairs; petals only a little, 
if any, broader than long; berry with bloom. 
2, Hypanthium evident, though sometimes short. 
*Anthers with a conspicuous cup-shaped apical gland. (VIs- 
COSISSIMA. ) . 
Hypanthium 24-4 times as long as broad ; berry bright-red. 
Bracts cuneate-obovate, the usually rounded or truncate 
summit cut into several deep teeth or lobes; styles 
usually hairy above. 
Bracts rhombic, mostly narrowly so, usually acute, entire 
or occasionally with one lateral lobe, the margin 
usually minutely glandular-denticulate ; styles usually 
smooth throughout. 
Leaves commonly 2.5-4 or even 5 cm. wide; petioles, 
rachis of the inflorescence, and leaf-blades devoid of 
pubescence ; flowers white, the pedicels commonly 2-5 
mm. long. : 
Leaves commonly 1.5-2.5cem. wide, seldom 3 cm.; petioles, 
rachis of the inflorescence, and usually the leaf-blades 
pubescent; flowers usually pink or pinkish, the pedicels 
17 
commonly 1-2 mm. long. 
Hypanthium less than twice as long as broad; berry black or 
blue 
ue. 
Ovary with at least a few gland-tipped hairs, or the hypan- 
thium and the sepals together more than 1 cm. long. 
Hypanthium at least twice as long as the sepals. 
Hypanthium little or not at all exceeding the sepals. 
Leaf-blades abundantly provided on both surfaces 
with sessile, exudating glands, but without gland- 
tipped hairs; hypanthium, sepals, and petals deep- 
red throughout. 
Leaf-blades with more or less abundant gland-tipped 
hairs on both surfaces; flowers greenish-white 
or white, purplish at most only in part. 
Sepals longer than the hypanthium, both together 
less than 7 mm. in length in the dried flower. 
Sepals equaling or shorter than the hypanthium, 
both together more than 7 mm. in length in 
the dried flower. 
Leaves with triangular-ovate, usually acute lobes; 
sepals acuminate to acute, provided on the 
back, usually conspicuously, with gland-tipped 
hairs; plant Mexican. 
10. 
11. 
14, 
16. 
20. 
21. 
. RR. 
Rk. 
R. 
[VoLuME 22 
. hudsonianum. 
. petiolare. 
. vulgare, 
triste. 
. erythrocarpum. 
R. 
acerifolium. 
glandulosum. 
coloradense, 
. laxtflorum. 
cereéum., 
. rentforme. 
. tnebrians, 
niescalertum. 
. ceriferum, 
neglectum, 
. Pringlei. 
