(631.) T. compacta, Kindb., Ott. Nat. Vol. IV. 62.

T. hirtella, Canadian Musci, No. 248.

Stems closely creeping. Tufts green, very dense and thick. Branches erect, terete, obtuse and unilateral. Paraphyllia none. Leaves cochleariform, rotundate-obtuse and short-apiculate, very scabrous at the back, with simple incurved papuliferous ciliae; borders spinulose-dentate or fimbriate-ciliate; ciliae long, curved up and dentate; costa obsolete or very short. Perichetial leaves oblong-lanceolate, narrowly-acuminate, fimbriate. Capsule pale-brown, ovate-cylindrical; teeth subulate, short and broad, sometimes horizontally divaricate when moist, distantly articulate, dusky, the upper article cleft; basilar membrane short, scarcely 1/4 the length of the teeth, without segments; operculum conic-obtuse, not curved, 1/3 the length of the capsule; pedicel smooth, scarcely 1 cm. long. Differs from Thelia hirtella in the longer branches, the larger and more pellucid leaves, the greater leaf-cells and the longer and thicker capsule, also in the peristome.

Abundant on the stems of young maples in the central counties of Ontario. It forms wide rings around the tree about four feet from the ground and fruits abundantly. Vicinity of Belleville and in Seymour, Northumberland Co., Ont. (Macoun.) On trees at Canaan Forks, Queen's Co., N.B. (J. Moser.)

(632.) T. hirtella, Sulliv.; Lesq. & James, Mosses of N. America, 299; Canadian Musci, No. 439.

Pterogonium liirtellum, Drumm. Musc. Bor. - Am., No. 79.

On trees, Upper Canada (Ontario.) (Drummond.) On the roots of trees in woods at Leamington, Ont. (Macoun.) On trees in woods at Collins Bay, near Kingston, Ont. (Lawson.)

(633.) T. asprella, Sulliv.; Lesq. & James, Mosses of N. America, 299.

On earth at the bases of trees at the south end of Pelee Point, Lake Erie, Ont. (Macoun.)