GENTIANACEJB. 143 



Hoods with horn-like process within 2 



Hoods cleft at the back (outside), hornless 8 



Hoods cleft on the inside, hornless 4 



1. PHXTiBEBiTIA, TTRB[. 



1. P. lineoris, xrar. heterophylla, Or. Corolla 6 lines broad, dnll-oolored. g. Gal. 



2. ASOLEPIAS, Lumams. 



Corolla-lobes 4 or 5 lines long: hoods 5 or 6 lines long, back prolonged 1 



Corolla-lobes whitish, 3 lines long: hoods truncate; horns little exserted 9 



Corolla-lobes greenish, 3 or 4 lines long: hoods appendaged on sides 3 



Corolla-lobes whitish, ovate, 3 lines long 4 



Corolla-lobe a greenish or purplish, 3 lines long: horns triangular, obtuse 5 



Corolla-lobes greenish or purplish, 2 lines long: horns slender, exserted .... 6 



1. A. speciosa, Torr. Stout, 2 to 5 ft. high: follicles with soft spines. 

 8. A. Fremont i, Torr. A foot high or less: short- woolly: leaves obtuse. 



3. A. erosa, Torr. Leaves ovate or narrower, acuminate, margins scarious. 



4. A eriocarpa, Benth. Densely woolly: leaves often in 3's, 4 to 8 inches long. 



ft. A vestita, H. & A. Dense white wool deciduous in age: leaves very acute, long. 

 fc, A. Mexlcana, Car. Smooth; slender leaves in whorls, 3 to 6 inches long. 



3. SCHIZNOTUS, Gray. 



1. a purpuraacens, Gr. Decumbent or prostrate: leaves cordate: corolla reddish. 



4. GOMPHOCARPUS, Root. Brown. 



JL GK cordifolrao, Benth. Smooth: loosely flowered: corolla dark purple-red. 

 t CK tomentoua, Gr. Woolly: stem angled: corolla greenish or purplish. 



GENTIANACEJB. 



Corolla from fonnelform to salverform: leaves opposite. 



Corolla yellow, 4-lobed: anthers not twisted. , I 



Corolla red, 3-5-lobed: anthers spirally twisted in age. ^. ......... 



Corolla blue or white: stigma fiat, nearly sessile 8 



Corolla rotate, 4-parted with fringed glands: leaves opposite or whorled 4 



Corolla campanulate: leaves alternate or radical, 3-f oliolate or renif onn * C 



1. MICXtOCALA, Link, 

 u M. quadrangrolaris, Oriseb. Slender, 2 or 3 inches high: 



