Lundell and Lundell, ?Amer. Midl. Naturalist 29: 490. 1943.?, 1943.

Lundell, ?Contr. Univ. Michigan Herb. 8: 85. 1942.?, 1942.

Lundell, ?Contr. Univ. Michigan Herb. 7: 50. 1942.?, 1942.

Lundell, ?Contr. Univ. Michigan Herb. 8: 84. 1942.?, 1942.

Lundell, ?Contr. Univ. Michigan Herb. 7: 48. 1942.?, 1942.

Lundell, ?Wrightia 5: 184. 1975?, 1975.

(S. F. B. ) Lundell and Lundell, ?Phytologia 1: 340. 1939?, 1939.

Lundell, ?Wrightia 5: 185. 1975?, 1975.