Oxalis decaphylla Kunth

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.

Ionoxalis occidentalis Rose, Contr. U. S. Nat
Herb. 10: 114. 1906.
Plants about 10 cm. tall, the bulb-scales many-ribbed; leaves much shorter than the
scape, the petioles very thick, glabrous; leaflets 4-6, the blades 8-14 mm. long, obcordate,
glabrous, bright-green, but slightly paler beneath than above, rather sharply notched at 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, purplemargined, each bearing 4, or sometimes apparently 3, short apical tubercles ; petals deeppurple 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.

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 ; pedicels 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; filaments pubescent, unappendaged.
Type locality : Near Mexico City, Mexico.
Distribution* : Middle Mexico.

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.

Ionoxalis jaliscana Rose, Contr. U. S. Nat. Herb. 10: 113. 1906
Plants 1.5-3 dm. tall, the bulb-scales several-ribbed ; leaves about one half as long as the scape or more, the petioles glabrous; leaflets 5-7, the blades 2-2.5 cm. long, cuneate to oblong-cuneate, notched to above the middle, with the lobes usually ovate, bright-green above, glaucous beneath, eciliate ; scape glabrous ; cymes 7-13-flowered ; pedicels 1-2 cm. long, glabrous ; sepals lanceolate or linear-lanceolate, 5-6.5 mm. long, glabrous, each bearing 2 oblong or linear apical tubercles; petals violet, 15-20 mm. long; shorter filaments glabrous ; longer filaments pubescent above, each with a minute appendage on the back below the middle ; styles pubescent ; capsules columnar, 10-14 mm. long.
Type locality : Near Guadalajara, Jalisco, Mexico.
Distribution : Middle Mexico.

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 cm. long, glabrous; sepals lanceolate to oblong, 3.5-4 mm. long, glabrous, each bearing 2 short apical tubercles ; petals purple, 8-11 mm. long; filaments pubescent, unappendaged.
Type locality : Near Guadalajara, Jalisco, Mexico.
Distribution : Jalisco.

Ionoxalis painteri Rose, sp. nov
Plants 0.5-1.5 dm. tall, the bulb-scales many-ribbed ; leaves full}' one half as long as the scape, the petioles glabrous ; leaflets mostly 7-9, the blades 1-2.5 cm. long, cuneate, sometimes narrowly so, notched to above the middle, bright-green above, glaucous beneath, ciliate; scapes glabrous ; cymes 5-11-flowered ; pedicels 1-1.5 cm. long, glabrous or nearly so ; sepals oblong, 3-4 mm. long, obtuse, glabrous, each bearing 2 short apical tubercles ; petals violet, 8-11 mm. long ; shorter and longer filaments pubescent, the longer ones appendaged on the back ; styles pubescent ; capsules oblong, 6-9 mm. long.
Type collected between Pachuea and Real del Monte, Hidalgo, Mexico, August 31, 1903, /. N. Rose &J. H. Painter 6705.
Distribution : Middle Mexico.

Oxalis decaphylla là một loài thực vật có hoa trong họ Chua me đất. Loài này được Kunth mô tả khoa học đầu tiên năm 1821.