78 GENTIANACE. 
Hoods with horn-like process within...... eed Fekaw oee des eeaR en's svcnncsens B 
Hoods cleft at the back (outside), hornless........... her ewnaraee end seGesdicers 3 
Hoods cleft on the inside, hornless........ccece-ccers aa(sidiesicistacececelneeeeee 
1. PHILBERTIA, HBK. 
1, PB. linearis, var, heterophylla, Gr. Corolla 6 lines broad, dull-colored. & Cal 
2. ASCLEPIAS, Linnzus. 
Corolla-lobes 4 or 5 lines long: hoods 5 or 6 lines long, back prolonged.........+.e02+ 1 
Corolla-lobes whitish, 3 lines long: hoods truncate; horns little exserted............+. 2 
Corolla-lobes greenish, 3 or 4 lines long: hoods appendaged on sides.................. 3 
Corolla-lobes whitish, ovate, 3 lines long............ecce eee cece cee cee cent cece eees 4 
Corolla-lobes greenish or purplish, 3 lines long: horns triangular, obtuse............. 5 
Corolla-lobes greenish or purplish, 2 lines long: horns slender, exserted...........-2 6 
speciosa, Torr. Stout, 2 to 5 ft. high: follicles with soft spines. 
Fremonti, Torr. A foot high or less: short-woolly: leaves obtuse. 
erosa, Torr. Leaves ovate or narrower, acuminate, margins scarious, 
eriocarpa, Benth. Densely woolly: leaves often in 3’s, 4 to 8 inches long. 
vestita, H. & A. Dense white wool deciduous in age: leaves very acute, long. 
Mexicana, Cav. Smooth; slender leaves in whorls, 3 to 6 inches long. 
Parone 
PPPP PP 
8. SCHIZNOTUS, Gray. 
purpurascens, Gr. Decumbent or prostrate: leaves cordate: corolla reddish, 
= 
mn 
4 GOMPHOCARPUS, Robt. Brown. 
1. G. cordifolius, Benth. Smooth: loosely flowered: corolla dark purple-red. 
2. G. tomentosus, Gr. Woolly: stem angled: corolla greenish or purplish. 
GENTIANACER, 
Corolla from funnelform to salverform: leaves opposite. 
Corolla yellow, 4-lobed: anthers not twisted. ....s0.scecsccccccescccccocscces Bb 
Corolla red, 3-5-lobed: anthers spirally twisted in age..............008 epeocen B 
Corolla blue or white: stigma flat, nearly sessile...............-scseceee woes 8 
Corolla rotate, 4-parted with fringed glands: leaves opposite or whorled........se...- & 
Corolla campanulate: leaves alternate or radical, 3-foliolate or reniform...... csecoses 5 
1. MICROCALA, Link. ° 
A. M. quadrangularis, Griseb. Slender, 2 or 3 inches high: calyx 4-angled, 
