434 CoKER: NORTH AMERICAN SPECIES OF ENCALYPTA 
per (28, pp. 307-340) with the Grimmiaceae; Lindberg (30, p. 26) 
and Braithwaite (33, pp. 279-287) adopted Leersia for Encalypta, 
referring it, as a subfamily, to the Tortulaceae, because of the 
leaf-characteristics. Limpricht (32, pp. 102-123) and Dixon 
(40, pp. 227-231) agree in recognizing the Encalyptaceae as dis- 
tinct from the Pottiaceae, but Dixon places it under the subgroup 
Aplolepideae and Limpricht uses the terms Haplolepideae and 
Diplolepideae only in the specific descriptions. Loeske (48, p. 100) 
rejects Lindberg’s usage of Leersia under the Tortulaceae and also 
the placing by Brotherus (44, pp. 436-439) of the Encalypteae as a 
subfamily of the Pottiaceae, and agrees with Fleischer (46, p. xil), 
who places them under a new group, the Heterolepideae, because 
the peristome varies from the Haplolepideae to the Diplolepideae, 
stating that they should be treated as a separate family. 
In 1904 Paris Index (45, pp. 119-126) listed 30 species, of 
which 18 were recorded for North America. According to Broth- 
erus, in 1902 (44, pp. 436-439), there were 35 species, of which 21 
- were recorded for the whole of America, 14 being endemic and 
18 occurring north of Mexico. We* have reduced this number 
to 8 by careful comparison of original and authentic specimens and 
by studying the types whenever possible, having seen type spect: 
mens of E.Jongipes, E. Macounii, and E. Selwyni from the Austin — 
and Mitten Herbaria, and authentic material of E. alaskana, E. 
letocarpa, E. subspathulata, E. cucullata, E. subbrevicolla, and 
E. labradorica from the Macoun collections. The accompanymg — 
lists and synonymy show the changes that have been made. 
Only one species remains doubtful, E. lacera Ren. & Card. (38, a 
p. 91); it was described in a footnote to their check list of North é 
American mosses from specimens collected in Oregon by L- es = 
Henderson, and no specimens have been obtainable. : 
Chronological list of the North American species of Enealsptay = 
1753. . extinctoria (L.) Sw. Disp. Musc. Suec. 24. 1799) 
1782. EE: laciniata (Hedw.) Lindb. Acta Soc. Sci. Fenn. 10: 267. 
1872. : oy 
1788. E. contorta (Wulf.) Lindb. Oefv. K. Vet. Akad. Foerh: — 
20: 396. 1863. a 
* The responsibility for these reductions rests largely with Mrs. Britton. 
+ Adapted from Brotherus (44) and Paris Index (45). 
