400 
Orthotrichum strictum, Vent., is described as a ‘‘subspecies of O. 
Lyellu, without propagula, and the leaves lanceolate and straight, 
the capsules short stalked, otherwise as in O, Lyelliz.” 
I have not seen Roll’s specimens, but from the description I 
see no differences sufficient for making a new sub-species when 
we have already several synonyms abundantly defined. I am 
not a believer in sub-species either, and question whether this 
is not O. papillosum, Hpe. 
Renauld and Cardot, in their check-list of North: American 
mosses, maintain four species, Nos. 543-546. Probably only two 
of these will stand, O. papillosum and O. Pringlet. 
A large suite of European specimens of O. Lyellii from the — 
Jaeger Herbarium shows none approaching O. Pringlet in the 
general aspect of its curly leaves and flexuose branches. 
OrrHotricuum Douctasi, Duby. Mem. Soc. Phys, d’Hist. Nat. 
de Geneve, xix. 293, t. I. fig. 2 (1868). 
Through the kindness of M. Barbey and M. Eugene Autran, 
of the Boissier Herbarium, I have seen the type of this species in 
Duby’s herbarium, collected by Douglas on the Columbia River, 
in 1830. In comparing the specimens with the description, |. ¢., 
I find one discrepancy. The description reads as follows: “theca 
erecta cylindrica sub ore parum dilatata fuscescente ecostata basi 
subplicata.” The capsules are not ecostate, for the walls show 
eight yellow bands of three or four rows of thickened cells, form- 
ing short ridges when the capsules are old and dry. The stomata 
are small and superficial, usually one at the termination of each 
band, in the middle of the theca, not around the base of the spore- 
sac; the surrounding cells are not much modified nor radiating- 
The following measurements may be of service in identifying the — 
species, which has not been collected since it was described: Seta — 
2 mm. long, vaginule 1 mm. long, theca 2.5 mm. long and 1.33 
mm. broad, the neck defluent into the seta, exserted beyond the 
perichzetial leaves, which are 2-3 mm. long, 1 mm. broad, with a 
blunt apex, hyaline concave base, without a revolute margin. 
They almost entirely cover the seta. There are but a few cap- 
sules preserved; one is quite immature, with the calyptra still on, 
and the others are old and deoperculate, but Duby kept ina mica 
slide, mounted in balsam, the peristome from which the figures 
