151 
Type locality, Cascades at Ellensburgh, Washington, Roll. 
On stones by the river near Thorp. 
IV. Group oF O. PULCHELLUM. 
Dr. Venturi states, Hedwigia, 32: 275 (1893), that Dr. Roll 
collected more forms of this group than occur in Europe, and 
concludes from their examination that the color of the peristome 
is of little value, as he found on the same clump some capsules 
with colorless teeth and others with colored. The form of the 
leaf appears to be more constant, the margins being more revo- 
lute in American specimens than in European, and the leaves are 
generally longer and narrower, with the fruit scarcely rising above 
the perichetial leaves. The specimens. with broad and short leaves 
and seta 5 mm. long, with capsules larger and more exserted, he 
thinks are referable to O. Columbicum Mitt. 
The group is characterized by an exserted capsule, faintly stri- 
ate, the teeth united in pairs or parted to base, with 16 appendicu- 
late cilia, united by a basal membrane, and the leaves faintly pa- 
Pillose. The following species are included, and two varieties 
have have been described which need comparison with previously 
recognized ones. In fact the whole group is in need of revision, 
there being two of Mitten’s species which are poorly understood. 
28. OrxtHorricuum PULCHELLUM Brunton. 
= ab ype locality, European; also reported as collected by E. Hall 
in Vregon, and by Harrington in Alaska. 
Var. longipes Sull. 
The description seems to agree with that of the European form 
known as Q, Winteri, and agrees with the figures given by Venturi 
Muse. Gall. ¢ 52), whereas the description of O. Columbicum agrees 
with that of the typical O. pulchellum. Locality not stated. 
Var. productipes R. & C, Bot. Gaz. 15: 43 (1890). Sea 
Much more robust than the type, with larger leaves, a longer 
Pedicel (4-6 mm.), and the teeth of the peristome larger and paler. _ 
Oregon, on trees and shrubs, LE. F.. Henderson», ip) a Be 
: “Perhaps identical with var. /ongipes Sull., but the ier cece 
OF this last variety in the Manual 175 is too incomplete to ~~ 
: Sot identification.” It will be noted that Venturi includ 
pe atiety under Q, glabrum. Wo eee 
