143 
11. ORTHOTRICHUM L&VIGATUM Zett. 
Venturi classed this species in the group with O. rupestre, in 
the Muscologia Gallica, but in a recent number of Hedwigia he 
Says that he finds the teeth when dry reflexed as in O. speciosum, 
with which group it is more closely allied by its long cylindric 
capsule exserted and smooth, or the ridges very short and faint, 
the teeth united in pairs, and the cilia 8.. He states that while it 
is very rare in Northern Europe, in America it is common, having 
been collected in many localities by Dr. Roll, and showing several 
forms. (Hedwigia, 32: 227, 1893). 
It has been collected in the Rocky Mountains, from Nevada, 
Idaho, Oregon, Washington, to British Columbia. 
12. ORTHOTRICHUM RHABDOPHORUM Vent. Bot. Cent. 8 (1890) ; 
Hedwigia, 32: 283 (1893). 
__ Itis said to differ from O. levigaium by the ridges being con- 
tinuous the entire length of the old capsules, while they are fainter 
in the operculate stage, and the cilia more or less perfect. 
Type from Cascades, Thorp, Washington, Roll. 
13. ORTHOTRICHUM KINGIANUM Lesqx. Mem. Cal. Acad 1: 18 
(1868); Sull. Icon. Suppl. 74, ¢. 55 (1874); Bull. Torr. Bot. 
Club, 20: 401 (1893). 
Since I have seen the types of Dr. Venturi's group of Ortho- 
‘richum Slenocarpum, and compared them with O. Macounit, I have 
found another portion of the type of O. Kingianum in Austin’s 
herbarium with O. Macounii, and compared it with the species of 
this section. They have a seta 3-4 mm. long, twice the length of 
the capsule, and quite exserted with a long vaginule, and the neck _ a 
‘tapering into the seta, which is twisted; the capsules are narrowly 
cylindric when empty, and the central cone of tissue remains as 
figured in the Icones, figs. 8-11. The teeth are erect, united in 
Pairs as figured, with the segments and thickening ridges very in- 
distinct and uncertain. The cilia, too, are not as clearly developed ae 
as the artist has figured them. In Sullivant’s type the upper cells 0 
of the leaves are large, occasionally .o18 mm. in length, with 
much thickened walls and short blunt papilla; the lower cells are | 
oblong, longer and smoother, and the basal angles auricled and : 
‘Frown. The vein is thick, deeply channeled, and brown, ending 
a below the apex, the margins are strongly revolute, and mn 
