58 VIOLACEJE. 



Violaceae. 



Viola LINN. 



Dichotomous Key to the Formosan Species. 



Leaves more or less pnrpurascent beueatli. (1) 

 Leaves not at all purpurasceiit beneath. (3) 



(1) Leaves cordate more or less acute at the apex Viola Kawalcamii. 



Leaves rouudly cordate, rounded at the apex. (2) 



(2) Leaves dotted beneath, dots black V. tozanensis 



Leaves not at all dotted V. formosana 



(3) Leaves more or less hirsute. (4) 



Leaves nearly glabrous or very shortly hairy. (5) 



(4) Sepals ciliolate V. di/usa 



Sepals not ciliolate V. Nagasawai 



(5) Leaves laiiceolately hastate, or simply lanceolate V. Patrinii 



Leaves broadly oblong, or auriculately cordate, more or less deltoid. (6) 



(6) Leaves deeply auriculately cordate, broadly deltoid ; 



flowering stem foliose V. rerecunda 



Leaves more or less elougately deltoid, flowering stem not at 



all foliose V. japonica 



Viola Kawakamii HAY AT A Fl. Mont. Forinos. p. 52, and Materials 

 for a Flora of Formosa p. 33. Slender herb. Leaves long petiolate, stipulate, 

 petioles slender, 10-15 cm. long, blades hastately cordate, acuminate or obtuse, 

 crenulate, pilose at the sinus between the crenas, other parbs glabrous, 

 glaucously violascent, nearly 3 cm. long, 2 cm. broad, stipules laciniate, a 

 little aduate to the petioles. Flowers (opened) 1.5 cm. in diameter, long 

 pedunculate, peduncles nearly as long as petioles, bracts 2 subulate remotely 

 arranged, 5 mm. long. Sepals subequal, obtusely acuminate, 4 mm. long, 

 1 mm. broad, base produced mm. beyond the insertion, glabrous. Upper 

 petals and lateral ones subequal, ovately cuueate, emarginate at the apex, 

 12 mm. long, 5 mm. broad, the lowest one larger 15 mm. long, 9 mm. broad, 



