36 NORTH AMERICAN FLORA [Volume 25 



24. Ionoxalis divergens (Benth.) Small. 



Oxalis divergens Benth. PI. Hartw. 9. 1839. 



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

 scape, the petioles glabrous or nearly so ; leaflets 4, the blades 1.5-2.5 cm. long, obdeltoid 

 in outline, broadly 2-lobed at the apex, glabrous or with few scattered hairs, deep-green 

 above, paler beneath ; scapes glabrous ; cymes 5-9-flowered ; pedicels 1-2 cm. long, glabrous ; 

 sepals lanceolate to linear-lanceolate, 4-4.5 mm. long, glabrous, each bearing 2 apical 

 tubercles; petals white, 12-15 mm. long; filaments minutely pubescent, unappendaged ; 

 styles sparingly pubescent ; capsules broadly oblong, 5-6.5 mm. long. 



Type locality : Mexico. 



Distribution : Southern Mexico and Guatemala. 



Illustration: Bot. Reg. 19: pi. 1620. 



25. Ionoxalis Grayi Rose, Contr. U. S. Nat. Herb. 10: 112. 1906. 



Oxalis decaphylla A. Gray, PI. Wright. 2 : 25. 1853. Not O. decaphylla H.B.K. 1822. 



Plants 0.5-3 dm. tall, the bulb-scales several-ribbed ; leaves over one half as tall as the 

 scape, the petioles glabrous; leaflets 4-7, the blades 1-3 cm. long, or sometimes longer, 

 cuneate, sometimes broadly so, prominently lobed, glabrous, bright-green, only slightly 

 paler beneath than above, the lobes ovate, sometimes narrowly so ; scape glabrous ; cymes 

 3-9-flowered ; pedicels 1-2.5 cm. long, glabrous ; sepals oblong to oblong-ovate, 4.5-5.5 mm. 

 long, glabrous, except sometimes for a tuft of hairs at the apex, each bearing 2 short apical 

 tubercles; petals violet, 14-19 mm. long; filaments pubescent, unappendaged; styles 

 pubescent ; capsules oblong, 6-7 mm. long. 



Type locality: At the copper mines [Santa Rita], New Mexico. 

 Distribution : New Mexico and northern Mexico. 



26. Ionoxalis decaphylla (H.B.K.) Rose, Contr. U. S. Nat. 

 Herb. 10; 111. 1906. 

 Oxalis decaphylla H.B.K. Nov. Gen. & Sp. 5: 238. 1822. 



Plants 0.7-2 dm. tall, the bulb-scales several-ribbed; leaves much shorter than the 

 scape, the petioles glabrous or nearly so ; leaflets 8-10, the blades cuneate, 2-3 cm. long, 

 2-lobed at the apex, the lobes oblong to ovate, much shorter than the body of the blade, 

 bright-green, and sometimes purple-margined ; scape glabrous ; cymes 5-14-flowered ; ped- 

 icels 6-11 mm. long, glabrous; sepals oblong or nearly so, 3-3.5 mm. long, glabrous, each 

 bearing 2 apical tubercles which are 2-lobed at the base; petals violet, 7-9 mm. long; fila- 

 ments pubescent, unappendaged. 



Type locality : Near Mexico City, Mexico. 



Distribution* : Middle Mexico. 



Illustration : H.B.K. Nov. Gen. & Sp. />/. 468. 



27. Ionoxalis furcata Rose, Contr. U. S. Nat. Herb. 10: 111. 1906. 



Plants 1-2.5 dm. tall, the bulb-scales many-ribbed; leaves nearly as tall as the scape or 

 taller, the petioles glabrous ; leaflets 5-9, the blades 2.5-4.5 cm. long, elongate-cuneate or 

 linear-cuneate, deeply lobed at the apex, glabrous, bright-green above, paler beneath, the 

 lobes linear; scapes glabrous; cymes 3-9-flowered; pedicels 1-1.5 cm. long, glabrous; 

 sepals narrowly oblong, 4-4.5 mm. long, glandular-pubescent, each bearing 2 short apical 

 tubercles; petals violet, 10-13 mm. long ; filaments minutely pubescent, unappendaged. 



Type locality : Near Guadalajara, Mexico. 

 Distribution : Jalisco. 



28. Ionoxalis confusa Rose, Contr. U. S. Nat. Herb. 10: 110. 1906. 

 Plants 1-2 dm. tall, the bulb-scales many-ribbed ; leaves fully as tall as the scape or 



taller, the petioles glabrous, except sometimes for a few hairs near the base ; leaflets 5-8, 

 the blades 2-4 cm. long, cuneate, cleft to below the middle, glabrous, glaucous, the lobes 

 linear, mostly narrowly so ; scapes glabrous ; cymes mostly 5-10-flowered ; pedicels 1-2 



