Part 1, 1907] OXALIDACEAE 35 



least when young, bright-green above, pale beneath ; scapes glabrous or nearly so ; cymes 

 3-7-flowered ; pedicels 1-2.5 cm. long, sometimes pubescent below the calyx ; sepals lance- 

 olate to linear-lanceolate, 4.5-5.5 mm. long, glabrous or nearly so, each bearing 2 apical 

 tubercles; petals violet, 12-17 mm. long; filaments minutely pubescent, unappendaged. 



Tvpe LOCALITY : Mexico. 



Distribution : Western and southern Mexico. 



Illustration-: Moc. & Sesse, Calq. Dess. pi. 149. 



20. Ionoxalis macilenta Small, sp. now 



Plants 3-7 cm. tall, the bulb-scales 3-ribbed ; leaves as tall as the scape or nearly so, 

 the petioles glabrous or with few scattered hairs near the top ; leaflets mostly 4, the blades 

 7-13 mm. long, obovate to spatulate-obovate, obtuse at the apex, bright-green above, 

 glaucous beneath, often with scattered hairs on the upper surface near the margin ; scapes 

 glabrous or nearly so ; cymes 1-2-flowered ; pedicels about 1 cm. long, glabrous ; sepals 

 linear to linear-lanceolate, 3^1 mm. long, glabrous, each bearing two rather short apical 

 tubercles; petals white, 13-16 mm. long; shorter and longer filaments pubescent, 

 unappendaged. 



Tvpe collected between Santa Gertrudis and Santa Teresa, Tepic, Mexico, August 8, 1897, 

 /. N. Rose 3323. 



Distribution : Tepic. 



21. Ionoxalis Trientalis Small, sp. nov. 



Plants 10-15 cm. tall, the bulb-scales 3-ribbed ; leaves as tall as the scape or nearly so, 



the petioles glabrous; leaflets 7-10, the blades elliptic or elliptic-lanceolate, 3-5.5 cm. 



long, rather obtuse at the apex, narrowed at the base, bright-green above, pale-green 



beneath, glabrous; scapes glabrous; cymes 5-S-flowered ; pedicels 1.5-3 cm. long, 



glabrous ; sepals oblong or nearly so, 3-4 mm. long, bearded at the apex, each bearing 



4 uneven rather elongate apical tubercles; petals lilac, 13-17 mm. long ; shorter and longer 



filaments pubescent, the latter unappendaged ; styles mostly glabrous; capsules columnar, 



about 1 mm. long, glabrous and glaucous. 



Type collected near Colomas, Sinaloa, Mexico, July 19, 1897,/. N. Rose 3217. 

 Distribution : Sinaloa. 



22. Ionoxalis tenuissima Rose, sp. nov. 



Plants 9-1 S cm. tall, the bulb-scales 3-ribbed; leaves about as tall as the scape, the 

 petioles finely pubescent, or glabrate in age; leaflets mostly 8-11, the blades narrowly 

 linear, 2.5-6 cm. long, obtuse or slightly notched at the apex, glabrous, light-green above, 

 glaucous beneath ; scapes glabrous ; cymes 2-5-flowered ; pedicels 1-2 cm. long, glabrous ; 

 sepals lanceolate, 3-4 mm. long, glabrous except the ciliolate margin, acute, each bearing 

 2 rather long apical tubercles ; petals violet, 10-12 mm. long ; shorter filaments glabrous ; 

 longer filaments pubescent, unappendaged. 



Tvpe collected between Dolores and Santa Gertrudis, Tepic, Mexico, August 7, 1897, J.N. Rose 

 3423. 



Distribution : Known only from the type locality. 



23. Ionoxalis lanceolata Small, sp. nov. 



Plants 10-20 cm. tall, the bulb-scales 3-ribbed ; leaves as tall as the scape or nearly so, 

 the petioles finely pubescent or partially glabrous in age ; leaflets mostly 5-7, the blades 

 2-9 cm. long, typically lanceolate, sometimes narrowly so, or those of the earlier leaves 

 inclined to be broadened upward or rarely obovate, the narrower ones acute or acutish, bright- 

 green above, paler beneath or glaucescent, usually sparingly pubescent, especially on the 

 lower surface and on the margins; scapes glabrous or nearly so; cymes 1^1-flowered ; 

 pedicels 1-3 cm. long, glabrous; sepals lanceolate or linear-lanceolate, 5-6 mm. long, 

 glabrous except the ciliolate margins, acute, each bearing 2 rather elongate apical 

 tubercles ; petals lilac, 14-18 mm. long ; shorter filaments glabrous ; longer filaments pubes- 

 cent near the tip, unappendaged; styles mostly pubescent ; capsules columnar, 9-11 mm. 

 long, glabrous. 



Type collected at Colomas, Sinaloa, Mexico, July 15, 1897,/. N. Rose 1651. 

 Distribution : Sinaloa. 



