(P. ) I.M.Johnst. and I.M.Johnst., (I. M. J. ), ?Proc. Amer. Acad. Arts 71: 60. 1936?, 1936.

(P. ) I.M.Johnst., ?Proc. Amer. Acad. Arts 71: 68. 1936?, 1936.

I.M.Johnst. and I.M.Johnst., (P. ), ?Proc. Amer. Acad. Arts 71: 70. 1936?, 1936.

(P. ) I.M.Johnst., ?Proc. Amer. Acad. Arts 71: 61. 1936?, 1936.

(P. ) I.M.Johnst., ?Proc. Amer. Acad. Arts 71:. 61. 1936?, 1936.

(P. ) I.M.Johnst., I.M.Johnst., (I. M. J. ), and I.M.Johnst., (G. ), ?Proc. Amer. Acad. Arts 71: 66. 1936?, 1936.

I.M.Johnst. and I.M.Johnst., (P. ), ?Proc. Amer. Acad. Arts 71: 77. 1936?, 1936.

(P. ) I.M.Johnst., I.M.Johnst., (L. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (L. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (L. ), and I.M.Johnst., (P. ), ?Contr. Gray Herb. 85: 108. 1929?, 1929.

(G. ) I.M.Johnst., I.M.Johnst.,, I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (G. ), I.M.Johnst.,, I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (G. ), I.M.Johnst.,, I.M.Johnst., (P. ), and I.M.Johnst., (P. ), ?Contr. Gray Herb. 85: 110. 1929?, 1929.

I.M.Johnst., I.M.Johnst.,, I.M.Johnst., (P. ), I.M.Johnst.,, I.M.Johnst.,, I.M.Johnst., (P. ), I.M.Johnst.,, I.M.Johnst.,, and I.M.Johnst., (P. ), ?Contr. Gray Herb. 85: 107. 1929?, 1929.

(P. ) I.M.Johnst., I.M.Johnst., (P. ), I.M.Johnst., (L. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (L. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), and I.M.Johnst., (L. ), ?Contr. Gray Herb. 85: 111. 1929?, 1929.

(P. ) I.M.Johnst., I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), I.M.Johnst., (P. ), and I.M.Johnst., (P. ), ?Contr. Gray Herb. 85: 109. 1929?, 1929.

I.M.Johnst., I.M.Johnst., (L. ), I.M.Johnst.,, I.M.Johnst.,, I.M.Johnst.,, and I.M.Johnst., (P. ), ?Contr. Gray Herb. 85: 105. 1929?, 1929.

(P. ) I.M.Johnst. and I.M.Johnst., ?Contr. Gray Herb. 85: 112. 1929?, 1929.

(P. ) I.M.Johnst. and I.M.Johnst., (P. ), ?Pl. Gui. 1: 217. t. 85.?, 1775.