T8 GENTIANACE.E. 



Hoodfl with hom*like process within 8 



Hoods cleft at the back (outside), hornless 8 



Hoods cleft on the inside, hornless 4 



1. PHTLBERTIA, HBK- 



1. P. linearis, var. heterophylla, Gr. Corolla 6 lines broad, diill*colored. S. C«L 



2. ASCLEPIAS, Linn»u8. 



CoroIla>lobes 4 or 6 lines long: hoods 5 or 6 lines long, back prolonged 1 



Corolla-lobes whitish, 3 lines long: hoods truncate; homa little exserted 2 



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



Corolla-lobes whitish, ovate, 3 lines long 4 



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



CoroUa-lobes greenish or purplish, 2 lines long: horns slender, exserted 



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



2. A. Fremonti, 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. 



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

 5. A. Mezicaxia, Cav. Smooth; slender leaves in whorls, 3 to 6 inches long. 



3. SCHIZNOTTJS, Gray. 

 1. S, purpturascens, Gr. Decumbent or prostrate: leaves cordate: corolla reddish. 



4. GOMPHOCABPXJS, Robt. Brown. 



1. G. cordifolius, Benth. Smooth: loosely flowered: corolla dark purple-red. 



2. O. tomentosus, Gr. Woolly: stem angled: corolla greenish or purplish. 



GENTIANACEJJ. 



OoroUa from funnelform to salverform: leaves opposite. 



Corolla yellow, 4-lobed: anthers not twisted. , 1 



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



Corolla blue or white: stigma flat, nearly sessile 8 



Oorolla rotate, 4-parted with fringed glands: leaves opposite or whorled •.... 4 



Corolla campanulate: leaves alternate or radical, 3-foliolate or reniform •••• 6 



1. MICROCAI.A, Link. 

 L JUL quadrangularis, Griseb. Slender, 2 or 3 inches high: calyx 4-angl9d. 



