Angstrcemia.] BRYACEJE. 63 



1. T. ambiguum, Hornsch. Stems short, 1 or 2 c. m. long: 

 leaves oj^en, lanceolate-subulate, canaliculate from an oblong- 

 ovate base ; perichietial leaves large, oblong, with a short lanceo- 

 late-acuminate point : capsule equal in length to the cylindrical 

 slightly arched collum or shorter; annulus large, re voluble ; 

 teeth of the peristome cleft to near the base or in the middle 

 only ; segments sometimes irregularly lacerate. — Regens. Flora, 

 ii. 88 ; Bryol. Eur. t. 96. Dicrcoiwn ambiguum, Hedw. 

 Muse. Frond, iii. 87, t. 36. Trematodon iongicoUis, Sulliv. 

 & Lesq. Muse. Bor.-Am. n. 75, in part, and (ed. 2), n. 96. 



Hab. - Wet sandy places in hilly districts; peat bogs, ditches, etc. 



2. T. longicollis, Michx. Differs from the last in the 

 shorter jilants, the jDerichfetial leaves more gradually and longer 

 acuminate, the collum of the oblong-cylindrical capsule twice as 

 long, the teeth of the peristome narrower subulate with nodose 

 articulations perforated along the divisural line, rarely dis- 

 jointed in two segments. — PL Bor.-Ara. ii. 289; Sulliv. Muse. 

 Allegh. n. 173, and Icon. Muse. 31, t. 19; Sulliv. & Lesq. Muse. 

 Bor.-Am. (ed. 2), n. 95. 



Hab. Moist clayey or sandy soil, from Pennsylvania and New Jersey 

 southward. 



20. ANGSTRCEMIA, Bruch & Schimp. 

 Plants densely gregarious. Stems erect. Leaves minute, 

 closely imbricate and appressed, with a thin costa vanishing 

 below the apex ; areolation loose. Flowers dioecious ; male 

 flowers discoid-gemraaceous, terminal. Capsule erect, globose- 

 ovate, symmetrical, solid, long-pedicellate. Lid short-beaked 

 from a conical base. Teeth of the peristome bifid from the 

 middle, rarely simple. 



1. A. longipes, Bruch & Schimp. Stems simple or 

 sparingly divided ; basilar branches filiform, strict : lower leaves 

 distant, very small, ovate, obtusely short-acuminate, the upper 

 and the perichsetial tufted, oblong-ovate, longer acuminate, 

 concave : capsule small, truncate when deoperculate ; annulus 

 none. — Bryol. Eur. t. 94. Weisia longipes, Sommerf. Suppl. 

 Flor. Lapp. 52, t. Dicraniim, julaceum. Hook. & Wils., 

 Drumm. Muse. Am. n. 100. 



Hab. Portage on the Columbia River, British America (Brummond). 



