Hi/pnum.] BRYACE^. 325 



* * * Plants of fine and large growth^ creeping^ 2-Z-pin- 

 nately ramidose: capsule long-cylindrical, erect, incurved or 

 arcuate : floioers dioecious. 



12. H. tamariscinum, Hedw. Stems strong and very- 

 long, alternately arched and attached to the ground by bundles 

 of rootlets : stem-leaves broadly deltoid, subcoidate at the con- 

 cave subplicate base, abruptly and narrowly lanceolate-acuminate, 

 papillose on both sides, revolute and crenulate on the borders, 

 irregularly serrulate at the apex ; branch-leaves ovate-lanceolate, 

 concave, bright green when young, ochreous or reddish brown 

 when old; apical cells simple, oval, projecting; pericluetial 

 leaves long-ciliate below, the inner with a long- flexuous and 

 flagelliform point ; the cilia filiform, simple or branched : capsule 

 on a long dark purple pedicel ; operculum uniform in color ; 

 annulus none. — Spec. Muse. 261, excl. syn., t. 67. Thuidium 

 tamariscinum, Bruch & Schimp. Bryol. Eur. t. 482, and 483. 

 T. tamariscifoliion, Lindb. Faun. Flor. Fenn. xiv. 415, t. 1, 

 fig. 7. 



Hab. Monntahi districts, on the ground. Fructifies in winter. 



13. H. recognitum, Hedw. Plants more slender, more 

 densely and widely cespitose, bipinnately ramulose ; branchlets 

 shorter: stem-leaves more densely crowded, more enlarged at 

 base ; branch-leaves broadly ovate, concave at base, acuminate, 

 sharply serrulate ; apical cells cylindrical, truncate and crowned 

 by two or three acute papilla? ; inner perichretial leaves ovate- 

 lanceolate, gradually narrowed into a long filiform serrate lori- 

 cate point, not ciliate on the borders : capsule smaller ; operculiim 

 shorter-rostrate; annulus large, distinct, deciduous. — Muse. 

 Frond, iv. 92, t. 35. Thuidium delicatidum, Bruch & Schimp. 

 Bryol. Eur. t. 484. T. recognitum, Lindb. 1. c. 416, t. 1, fig. 9. 



Hab. On the ground, roots of ti'ees, rocks, etc. ; veiy common. Fruit- 

 ing in June. 



14. H. delicatulum, Linn. Mode of growth, color, rami- 

 fication, form of the leaves, etc., as in the last. It has also the 

 same kind of apical cells in the branch-leaves, but the perichae- 

 tial leaves are like those of H. tamariscinum., very long-ciliate ; 

 the operculum is more slender and long-rostrate, and the annulus 

 is narrower than in IT. recognitum, but more distinct than in 

 H. tamariscinum. — Spec. PL 1125, in part (the American 

 plant) ; Hedw. Muse. Frond, iv. 87, t. 33. H. proliferum, 



