. A revision of the North American Isotheciaceae and Brachythecia [microform]. Mosses; Mousses. 148 Authentic specimens from type locality in Herb. Macoun are not referable to Entodon at all, but are one of the complanate- foliate Hypneae. Capsules are needed to classify them. There are no quadrate alar cells and the cells at the angles are so little enlarged as to be scarcely noticeable. Entodon subflaceus C. Muell. & Kindb. Can. Rec. Sci. 1894: 21. 1894. Professor Macoun says in a recent letter, " You will notice that Hypninn subflaccum is really what is also described as " Fji
. A revision of the North American Isotheciaceae and Brachythecia [microform]. Mosses; Mousses. 148 Authentic specimens from type locality in Herb. Macoun are not referable to Entodon at all, but are one of the complanate- foliate Hypneae. Capsules are needed to classify them. There are no quadrate alar cells and the cells at the angles are so little enlarged as to be scarcely noticeable. Entodon subflaceus C. Muell. & Kindb. Can. Rec. Sci. 1894: 21. 1894. Professor Macoun says in a recent letter, " You will notice that Hypninn subflaccum is really what is also described as " Fji- todoH ; This was Kindberg's second name. His first was C. Drummondi. His third was H. ; Entodon (?) expallens C. Muell. & Kindb. in Macoun, Cat. Can. PI. 6 : 177. 1892. This species belongs to the same group as E. Macounii. Cylindrothecium Floridanum Duby, Regensb. Flora, 58: 284, is probably not related to Entodon, as the horizontal capsules described are not in accordance with the characters of the genus. We have not been able to obtain a specimen of it, as the type can- not be found in the Duby nor the Boissier herbaria at Geneva. 2. PYLAISIELLA Kindb. Can. Rec. Sci. 1894 : 21. 1894. [Pylaisia Br. & Sch. Bryol. Eur. fasc. 46-47. 1851. Not Desv. 1814.] Gametopliyte in rather thin glossy green mats. Stems creeping, subpinnately branching. Branches short, erect or ascending, more or less recurved at the tips by reason of the strongly secund apical leaves; not radiculose. Leaves erect-spreading, some- what falcate-secund, especially when dry, acuminate, concave, ecostate or costa short and double; leaf cells linear, quadrate at the basal angles. Monoicous ; paraphyllia none. Male branches gemmiform, borne on stem or branches. Female branches usually borne on the stem. Sporophyte with seta smooth, twisted to left above, to right below. Calyptra cucullate. Capsule erect, seldom slightly incurved; operculum conic or short rostrate. Columella
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