—48- 
an elongate isosceles triangle with curved borders, carinate; teeth 
acute, never in pairs; papillae always over the upper end of the cells. 
Range: — New Brunswick and Ontario, south to Texas, west to Min- 
nesota. 
6. PhilonoTIS SERIATA (Mitt.) Lindb., Muse. Scand. 15. 
(1879). 
Dixon & Jameson, Handbook. Ed.ii: 324. t. 41. B. (1904). 
Bariramia seriata Mitt., Musci Indiae orient. 63. (1859.) 
Tufts loose; stem leaves in regular spiral rows, oval-lanceolate, 
falcate, acuminate, obtuse, carinate, somewhat decurrent, concave and 
plicate, marginal teeth in pairs; costa strong, red, highly papillose at 
back; perigonial leaves, oval, rounded at apex, obscurely costate. — 
[Essai, 417.) 
A rare species in America, the only specimens seen coming from 
Greenland. Most specimens so named are referable to the next 
subspecies. 
7. *PHIL0N0TIS AMERICANA Dismier. 
Ph. fontana varr. serrata et brachyphylla Kindb., Cath Canadian 
PI. Pt. 6: 107. (1892), {nom. nud.) 
Dioicous ; in more or less dense cushions, yellowish green or 
rarely deep green, interwoven with brown tomentum below ; stems 
6-7 cm. high. Stem leaves 2.5 X 0.9 mm., appressed and arranged in 
regular rows, oval or oblong-oval, rather shortly acuminate, very con- 
cave, carinate, with 1-2 plicae on each side of the costa ; margins 
revolute below, the teeth in pairs even in the upper portion ; costa 
well developed, yellowish, orange, or brown, at times papillose on the 
back, usually somewhat excurrent ; areolation of the rectangular cells 
laxer toward the base with papillae at the lower angles. Male in- 
florescence large ; perigonial bracts erecto-patent, or horizontal, oval, 
strongly concave, rounded or acute at apex, costa obscure. Seta 
4 cm. long, dark red, flexuose. Capsule oval-arctuate, 3X2 mm., 
brown, strongly sulcate when dry ; operculum conical, obtuse ; 
stomata numerous in the collum. Teeth of peristome brown, lanceo- 
late, 0.4X0.08 mm., of about 25 articulations, with tori in the upper 
third. Endostome yellowish, papillose, basal membrane 0.18 mm. 
high with the processes equalling the teeth, open along the keel, cilia 
3. Spores 20/^ in diameter, globose or reniform, yellowish, verrucose. 
Range : — Aleutian Islands, British Columbia and Newfoundland, 
south to Utah, Wisconsin and New York. 
var. TORQUATA (Ren. & Geh.) Dismier. 
Ph. Macounii var. torquata Ren. & Geh., Rev. Bry. 23:61. 
(1896). 
Leaves large, spirally twisted when dry, very concave and deeply 
plicate near the nerve. — Washington. — {Rev. Bry. 1. c.) 
