Part 1, 1907] OXALIDACEAE 41 



rum. long; shorter filaments glabrous ; longer filaments pubescent, each with a prominent 

 appendage on the back near the base. 



Type collected near Bttena Vista Station, Hidalgo, Mexico, August 6, 1904, C. G. Pringle 8946. 

 Distribution : Hidalgo. 



47. Ionoxalis nudiflora (Moc. & Sesse) Small. 



Oxalis nudiflora Moc. & Sesse ; DC. Prodr. 1 : 695. 1824. 



Plants 1-2 dm. tall, the bulb-scales 3-ribbed ; leaves fully one half as tall as the scape 

 or equaling it, the petioles copiously villous; leaflets 3, the blades obreniform, 2-3 cm. 

 wide, deep-green and with occasional hairs above, paler and with scattered hairs beneath, 

 the lobes rounded ; scapes pubescent like the petioles ; cymes 4- 10-flowered ; pedicels 

 1.5-3.5 cm. long, very sparingly pubescent ; sepals lanceolate to linear-lanceolate, 5-6 mm. 

 long, pubescent, each bearing two broad apical tubercles; petals violet, 11-16 mm. long; 

 shorter filaments glabrous ; longer filaments pubescent, each with an appendage on the 

 back below the middle. 



Type locality : Mexico. 



Distribution : Southern Mexico. 



Illustration: Moc. & Sesse, Calq. Dess. />/. 15(1. 



48. Ionoxalis angulata Small, sp. nov. 

 Plants 1.5-3 dm. tall, the bulb-scales 3-ribbed ; leaves nearly as tall as the scape, the 

 petioles sparingly pubescent ; leaflets 3, the blades broadly obdeltoid, 4-7.5 cm. wide, 

 glabrous in age, bright-green above, slightly paler beneath, the lobes angulate, those of 

 the larger leaflets irregularly toothed ; scapes glabrous ; cymes 5-11-flowered ; pedicels 

 1-2 cm. long, glabrous ; sepals oblong to ovate-oblong, 3-4 mm. long, glabrous or nearly 

 so, each bearing 4 broad often partially confluent apical tubercles ; petals violet, 14-1S 

 mm. long; shorter filaments glabrous; longer filaments pubescent; each with a very prom- 

 inent appendage on the back about the middle. 



Type collected in Orizaba, Mexico, in 1855, Frederick Milller 7S6. 

 Distribution : Known only from the type locality. 



49. Ionoxalis alpina Rose, Contr. U. S. Nat. Herb. 10 : 110. 1906. 



Plants 1-3 dm. tall, the bulb-scales 3-ribbed ; leaves often about one half as tall as the 

 scape, the petioles glabrous ; leaflets 3, the blades obreniform or obreniform-obdeltoid in 

 outline, 1-1.5 cm. wide, glabrous or nearly so, bright-green above, pale beneath, the lobes 

 rounded or broadly ovate ; scapes glabrous; cymes mostly 2-flowered, sometimes 3-flow- 

 ered ; pedicels 2-3.5 cm. long, glabrous; sepals lanceolate, 4.5-5 mm. long, glabrous, 

 each bearing 2 rather narrow apical tubercles ; petals white, 19-23 mm. long ; shorter and 

 longer filaments pubescent, the latter unappendaged. 



Type locality : Sierra de las Cruces, Mexico, Mexico. 



Distribution: Mexico (state). 



50. Ionoxalis immaculata Small, sp. nov. 

 Plants 0.8-2 dm. tall, the bulb-scales 3-ribbed; leaves over one half as tall as the scape, 

 the petioles glabrous ; leaflets 3, the blades obdeltoid in outline, 1-1.5 cm. wide, glabrous, 

 bright-green above, paler beneath, the lobes broadly ovate ; scapes glabrous ; cymes 4-5- 

 flowered ; pedicels 1.5-3 cm. long, glabrous; sepals linear to linear-oblong, 4-4.5 mm. 

 long, glabrous, each bearing 2 very narrow apical tubercles ; petals white, 11-13 mm. long ; 

 shorter filaments glabrous; longer filaments pubescent, unappendaged; styles pubescent; 

 capsules columnar, about 10 mm. long, glabrous. 



Tvpe collected on Sierra de Pachuca, Hidalgo, Mexico, Julv 21 and 22, 1901, /. .V. Rose & 

 Robert Hay 5545. 



Distribution : Hidalgo. 



51. Ionoxalis macrocarpa Small, sp. nov. 

 Plants 15-20 cm. tall, the bulb-scales 3-ribbed ; leaves about one half as tall as the 

 scape or more, the petioles finely pubescent; leaflets 3, the blades 2.5-3 cm. long, rather 

 obdeltoid in outline, nearly truncate at the apex, with scattered hairs on both surfaces, 



