298 BKYACEiE. [Thella. 



Var. rupestris, Sulliv. & Lesq. More densely tufted, 

 stouter; branches julaceous: leaves shorter, broader, obtuse: 

 capsule broader ; operculum shorter. — Muse. Exsicc. n. 246''- 



Hab. Trunks and branches of trees, especially along rivers; the 

 variety on roclcs covered by inundations, and on the muddy base of trees, 

 in the Southern States. 



The variety appears to resemble closely, if indeed it is not identical 

 with, Anisodou acutirostris of Schimper, of which we have seen no 

 authentic specimens. — (Sullicant.) 



Tbibe XXI. LESKEE^. 



Primary stems creeping ; stems or primary branches di- 

 versely branching, ei-ect or declining or prostrate. Leaves 

 equally spreading or secund, soft, opaque, costate, with para- 

 phyllia of various forms often interposed ; cells of the areola- 

 tion densely chlorojjhyllose, papillose, minute, hexagonal or 

 punctiform in the upper part, looser and hexagonal-rectangular 

 below. Flowers upon the primary or secondary stems ; vagin- 

 ule perfect. Calyptra cucullate, naked. Capsule symmetrical, 

 erect or curved, oblique or horizontal. Peristome double ; the 

 teeth linear-lanceolate or subulate ; inner basilar membrane 

 more or less deeply cut into 16 carinate-plicate segments shorter 

 than the teeth, sometimes separated by rudimentary or long 

 perfect cilia. Spores minute. 



118. THELIA, Sulliv. (PI. 6.) 

 Plants growing in compact glaucous or yellowish green mats, 

 on the base of trees, rarely on sandy ground ; stems villous with 

 a radicular tomentura, creeping, throwing up densely ci-owded 

 short terete branches, with deeply concave closely imbricated 

 deltoid-ovate slenderly pointed leaves, composed of pellucid 

 elliptical and conspicuously unipapillate cells. Capsule ovate- 

 cylindrical, erect. Lid conical, obliquely rostellate. Peristome 

 double; the outer of 16 linear-subulate white granulate dis- 

 tantly articulated teeth, the inner a carinate membrane half the 

 length of the teeth, without or with rudimentary segments. 

 Flowers dioecious ; male plants as yet unknown. 



