16 LESQUEREUX — CATALOGUE 
leaves are much shorter. When growing in the shade, the appearance of the plants 
is different, the leaves being longer and not appressed closely to the stem, ete. But 
the true specific characters of this species, as they are given in the description, are 
recognizable in every form. 
PTYCHOMITRIUM, Brch. & Schp. 
99. BP. Gardneri, Spee. nov. Ramificatione, habitu, formaque foliorum, P. poly- 
phyllo, Breh. & Schp., simillimum, differt: foliis brevioribus, latioribus, 
siccitate tortilibus vel cirrhatis, reflexis humiditate, margine argutius 
serratis, retis basilaribus longioribus, superioribus cellulis quadratis con- 
fertioribus ; capsula in pedicello breviori, pallide ferruginea longiori, 
operculo longiori rubello persistente, margine minus crenulato; annulo 
angustior! revolubili; peristomi dentibus crassioribus, atro-sanguineis, ad 
basim plerumque trifidis ; calyptra levi. 
Hab. on rocks, Dardanelles Canon, Forest Hill, Bol. 
The large size of this moss separates it at first sight from the European species. 
The male flowers are rarely axillary, generally two to four at the base of the vaginule 
within the perichetium. Its color is dark green. 
ORTHOTRICHEZ. 
ZYGODON, Brch. & Schp. 
100. Z. Lapponicus, Breh. & Schp. 
Hab. spray of the Nevada Falls, Yosemite Valley, Bol. ; Cascade Mts., Lyall. 
101. Z. Californicus, Mull. 
Hab. on shaded rocks, Marin Co. ; Dardanelles Caiion, ete., Bol. 
Z. cuspitosus, Mitt. A new species formed on sterile specimens collected on 
Vancouver Island by Lyall, appears, from the description, to belong to this 
species. 
ULOTA, Mohr. 
102. U. phyllantha, Brid. 
Hab. Vancouver Island, Wood. 
This division of the Orthotrichee has not yet any representative from Cali- 
fornia. 
ORTHOTRICHUM, Hedw. 
103. ©. cupulatum, Hoffn. 
Hab. on metamorphic limestone rocks, near the Russian River, Ukiah, red- 
woods, deep gulches, Lod. 
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