Correll, ?U.S. Dept. Agric. Monogr. no. 11: 228, fig. 164-166. 1952.?, 1952.

Ewan, ?Nat. Hist. Misc. 94: 1. 1952.?, 1952.

Ochoa, ?Revista Argent. Agron. 19: 234. 1952.?, 1952.

Correll, ?U.S. Dept. Agric., Agric. Mon. (Sect. Tuber. Gen. Solan. N. Am.& Cent. Am.) 11: 161, fig.?, 1952.

Ochoa, ?Revista Argent. Agron. 19: 231.1952.?, 1952.

Correll and Correll, ?Agric. Monogr. U.S.D.A. 11: 158. 1952.?, 1952.

Ewan, ?Nat. Hist. Misc. Chicago Acad. Sci. 88: 8. 1952?, 1952.

Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 65, 43, 44. 1952.?, 1952.

Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 157, fig. 105, 106. 1952.?, 1952.

S. & L.O.Williams, ?Ceiba 3: 59. 1952.?, 1952.

Correll, ?U. S. Dept. Agric., Agric. Monog. no. 11: 63, figs. 41, 42. 1952.?, 1952.

Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 25, fig. 11, 12. 1952.?, 1952.

(B. ) Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 97. 1952.?, 1952.

Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 79, fig. 53, 54. 1952.?, 1952.

Correll, ?U. S. Dept. Agric., Agric. Mon. 11: 83, fig. 55. 1952.?, 1952.

(B. ) Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 105. 1952.?, 1952.

(C. ) Correll, ?U.S. Dept. Agric., Agric. Mon. 11: 59. 1952.?, 1952.

S. & L.O.Williams, ?Ceiba 3: 58. 1952.?, 1952.

Rech.f., ?Ark. Bot. ser. 2, 2: 420. 1952?, 1952.

S. & L.O.Williams, ?Ceiba 3: 57. 1952?, 1952.