48 NORTH AMERICAN FLORA 
Leaves covered beneath with a fine close pale pubescence. 
Corolla-tube very slender, 5 mm. long; leaf-blades 3.5- 
7.5 em. long. 
Corolla-tube thick, 8-9 mm. long; leaf-blades mostly 
8-15 cm. long. 
Leaves nearly or quite glabrous in age. 
Leaf-blades rounded or obtuse at the apex. 
Leaf-blades acute or acuminate. 
Leaves wholly glabrous. 
Leaves more or less pubescent. 
Corolla reddish, the tube slender, 4 mm. long. 
Corolla rusty-yellowish, the tube stout, 5 mm. 
long. : 
Calyx-lobes linear or narrowly triangular, usually more than 1 mm. 
long. 
Pedunelés mostly longer than the leaves; seeds exalate. 
Peduncles shorter than the leaves; seeds usually alate. 
Leaves and branches glabrous or nearly so, the pubescence, 
when present, appressed. 
Corolla-tube 3-4 mm. long; leaf-blades obtuse or abruptly 
and broadly short-acuminate. 
Corolla-tube 6 mm. long; leaf-blades subabruptly acumi- 
nate, the acumen longer than broad. 
Leaves more or less pilosulous beneath, the branches densely 
pilose or sericeous. 
Branches pilose-sericeous. 
Branches pilose with spreading hairs. 
Leaf-blades 13-20 cm. long; capsule 6-7 mm, in 
diameter. 
Leaf-blades 10 cm. long or shorter; capsule 4-6 mm. 
in diameter. 
Calyx-lobes 1—-1.5 mm. long; corolla-tube 5.5-6 
mm. long. 
Calyx-lobes 2.5—5 mm. long; coro!la-tube 6—8 mm. 
long. 
XI. UMBELLULATAE 
Pubescence sericeous, closely appressed. 
Inflorescence pedunculate. 
Inflorescence subsessile. 
Pubescence loose and spreading, never sericeous. 
Inflorescence 1-flowered; leaves long-pilose. 
Inflorescence with few or numerous flowers. 
Leaf-blades setose-pilose with long slender hairs, rounded or sub- 
cordate at the base. 
Leaf-blades pilose with very short hairs, acute at the base. 
Inflorescence simple, capitate, the peduncles shorter than the 
petioles. 
Inflorescence trichotomous, long-pedunculate. 
XII. INCANAE 
Peduncles as long as the leaves or longer. 
Petioles about 2 mm. long. 
Petioles 8-12 mm. long. 
Stipules triangular, obtuse. 
Stipules linear-subulate. 
Peduncles shorter than the leaves. 
Leaves densely tomentose beneath. 
Leaves glabrous. 
Calyx-lobes triangular. 
Calyx-lobes linear or spatulate-linear. 
XIII. PrrosaE 
Calyx-lobes deltoid, minute. 
Calyx-lobes linear or spatulate. 
Calyx-lobes 1.5—4 mm. long. 
Leaf-blades cuneate-obovate; inflorescences usually 1-flowered, the 
peduncles 2 mm. long or shorter; corolla-tube 6—7 mm. long. 
Leaf-blades variable in outline but never cuneate-obovate; in- 
florescences usually 3-flowered, the peduncles sometimes 2 cm. 
long; corolla-tube 7-10 mm. long. 
Calyx-lobes 6-12 mm. long. 
Inflorescence short-pedunculate; petioles 6-12 mm. long. 
Inflorescence long-pedunculate; petioles 2-6 mm. long. 
65. 
66. 
67. 
68. 
69. 
70. 
file 
12: 
73% 
74, 
Ue 
76. 
Fil 
78. 
ae) 
80. 
81. 
82. R 
83. 
84. 
85. 
86. 
87. 
88. 
89. 
90. 
oe 
OF 
93. 
94. 
[VOLUME 32 
R. tomentosa. 
R. ochracea. 
R. portoricensis. 
R. polita. 
R. trifolia. 
R. thyrsoidea. 
R. americana. 
R. arborescens. 
R. stereocarpa. 
R. Christi. 
R. martinicensis. 
R. impressa. 
R. hirsuta. 
R, cincta. 
R. glauca. 
R. ligulata. 
R. hirta. 
. saxicola. 
R. umbellulata. 
. Lindeniana. 
. Nimanimae. 
. Leoni. 
. incana. 
. chamaebuxifolia. 
. vacciniifolia. 
Wie BP 
R. intermixta. 
R. buxifolia. 
R. inermis. 
. scabra. 
. pilosa. 
Ay 
