Part 1, 1907] OXALIDACEAE 33 



the apex ; scape glabrous ; cymes 4-7-flowered ; pedicels 2-3 cm. long, glabrous ; sepals 

 oval or somewhat obovate, 6-7 mm. long, rounded or truncate at the apex, glabrous, purple- 

 margined, each bearing 4, or sometimes apparently 3, short apical tubercles ; petals deep- 

 purple above, paler near the base, 19-23 mm. long ; shorter and longer filaments pubescent, 

 the latter each with an appendage on the back. 



Type locality: Between Bolanos and Guadalajara, in the State of Zacatecas, Mexico. 



Distribution : Known only from the type locality. 



11. Ionoxalis caerulea Small, sp. no v. 



Plants 8-15 cm. tall, the bulb-scales 3-ribbed ; leaves slightly shorter than the scape, the 

 petioles glabrous ; leaflets 3, the blades S-12 mm. long, obdeltoid or somewhat lunate in 

 outline, glabrous, bright-green above, pale-green beneath, decidedly notched at the apex ; 

 scape glabrous; cymes 3-6-flowered ; pedicels 1.5-3 cm. long; sepals oblong to oblong- 

 lanceolate, 4.5-5 mm. long, rather obtuse, glabrous, green-margined, each bearing 2 short 

 entire apical tubercles; petals blue, 14-16 mm. long; shorter filaments glabrous; longer 

 filaments pubescent, each with an appendage on the back below the middle. 



Type collected in Lincoln County, New Mexico, June 7, 1S9S, Josep/iine Skehan 112. 



Distribution : New Mexico. 



12. Ionoxalis scopulorum Rose, sp. nov. 



Plants 25-40 cm. tall, the bulb-scales several-ribbed ; leaves usually less than one half as 

 tall as the scape, the petioles sparingly pubescent with lax hairs or glabrous in age ; leaflets 4, 

 the blades 1.5-2.5 cm. long, obdeltoid in outline, shallowly 2-lobed, bright-green above, 

 pale beneath, glabrous except for occasional marginal hairs, brown-margined ; scape 

 glabrous ; cymes 9-18-flowered ; pedicels 2-3 cm. long, finely pubescent below the 

 calyx; sepals oblong or nearly so, 4-4.5 mm. long, glabrous, often purple-margined, each 

 bearing 2 tubercles which are often irregularly lobed at the base; petals violet, 14-19 mm. 

 long ; shorter filaments glabrous ; longer filaments pubescent above, each with an append- 

 age below the middle. 



Type collected near Cuernavaca, Mexico, September 11, 1900, C. G. Pringle 9267. 



Distribution : Known only from the type locality. 



13. Ionoxalis tetraphylla (Cav.) Rose, Contr. U. S. Nat. 

 Herb. 10: 115. 1906. 

 Oxalis letraphylla Cav. Ic. 3 : 19. 1794. 



Plants 1-3 dm. tall, the bulb-scales several-ribbed ; leaves mainly over one half as tall as 

 the scape, the petioles sparingly pubescent, especially near the base ; leaflets 4, the blades 2-2.5 

 cm. long, obdeltoid in outline, shallowly 2-lobed, deep-green and sometimes purple-blotched 

 above, slightly paler beneath, glabrous, green-margined ; scape sparingly pubescent or 

 rather copiously so at the base; cymes 4-9-flowered ; pedicels 1-2.5 cm. long, minutely 

 pubescent and slightly glandular below the calyx ; sepals ovate to oblong-ovate, 4-5 mm. 

 long, pubescent, each bearing 2 short apical tubercles ; petals violet, 13-17 mm. long ; 

 shorter filaments glabrous ; longer filaments pubescent above, each with a prominent 

 appendage at about the middle. 



Type locality : Mexico. 



Distribution : Mexico. 



Illustration : Cav. Ic. pi. 237. 



14. Ionoxalis divaricata Small, sp. nov. 



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

 scape, or equaling it, the petioles glabrous, at least above the base ; leaflets 4, the blades 

 2-5 cm. long, open V-shaped, with the 2 oblong or oblong-ovate lobes rather spreading, 

 bright-green above, paler beneath, with scattered hairs on both surfaces ; scape 

 glabrous; cymes 3-11-flowered ; pedicels 1.5-3 cm. long, glabrous; sepals lanceolate or 

 oblong-lanceolate, 4.5-5 mm. long, glabrous, each bearing 2 short apical tubercles ; petals 

 violet, 12-16 mm. long; shorter filaments glabrous; longer filaments pubescent above, 

 each with an appendage below the middle. 



Type collected near Tlalpam, Valley of Mexico, July 15, 1901, J. X. Rose & Robert Hav 5494. 



Distribution : Valley of Mexico. 



