76 AMERICAN FERN JOURNAL 
form with more persistent teeth; his var. affine still 
smaller (20-25 ridges and leaves) with persistent rough 
teeth, finally becoming white. The variety minus 
probably is only a variation due to ‘age and should not, 
for that reason, be maintained. I have seen nothing 
answering to the description of the variety affine; pos- 
sibly Eaton’s EB. hiemale var. pumilum, with persistent, 
white teeth is a phase of it. Further study is necessary 
before final determination of its status. In Fern Bul- 
letin Vol. XI, p. 111, 1903, Eaton transferred this varietal 
name to the American plant that had been passing under 
the name of E. hyemale and I, following Eaton’s lead, 
retained the name under Hippochaete, Mem. N. Y. Bot. 
Gard. VI, 467, 1916. This transfer of Engelman’s 
varietal name was without warrant. Engelman_ him- 
self says the sheaths are too short to be E. hyemale and 
this character together with that of the teeth being per- 
sistent finally turning white is sufficient to prove that it 
is not the plant with caducous teeth and long sheaths. 
So far as I am able to ascertain the American plant 1s 
without a name and I propose for it the varietal name 
pseudohyemalis. The variety is: Hippochaete prealta 
(Raf.) Farwell, var. pseudohyemalis new name. 
Equisetum hyemale Amer. authors, not Lin. 1753. 
Equisetum hiemale var. affine (Engelm.) A. A. Eaton, 
Fern Bull. XI, 111, 1903, but not E. robustum 
var. affine Engelm. 1843. 
Hippochaete prealta var. affinis (Engelm.) Farwell, 
em. N. Y. Bot. Gard. VI, 467, 1916, but not 
E. robustum var. affine Engelm. 1843. : 
My thanks are due to Mr. W. W. Bishop, the Libraria? 
of the University of Michigan, and to Mr. W. N. Clute; 
of Joliet, Ill., for the loan of- journals containing the . 
original descriptions, 
SPARTMENT OF Botany, PaRKE, Davis & Co., 
Detroit, Micu. 
