676 (76) Musci. (mosses.) 



shorter. — On dry rocks. Var. set6sum : branches more elongated and slender ; 

 leaves attenuated, of a yellowish sUky hue. — Base of trees, in dry places. 



* * Pedicels rough. 



59. H. ruta-bnlnm, L. Monoecious; stems 3' -5' long, prostrate or 

 arcuate, with an iiTCgular ramification ; branches ascending ; leaves pale green, 

 broadly ovate and ovate-lanceolate, concave, serrulate, thin, shining, substriate 

 only when dry, costate above half-way ; capsule oval or oblong-cemuous ; annu- 

 lus large ; perichffitial leaves recurved ; vaginula emergent, pilose : a large 

 species. — On the ground, in wet and springy places. (Eu.) 



60. H. plumdsuin, L. (Bryol. Europ.) Monoecious; stems 3' -4' 

 long, creeping branches ascending, ramulose ; leaves yellowish-green or reddish- 

 bro^^^l, ovate and deltoid-ovate, with a short rather oblique point, serrulate above, 

 semicostatc, esti'iate; capsule gibbous, oval, inclined; annulus nan'ow; only 

 the upper half of the pedicel scabrous. (H. pseudo-plumosum, Brid., Mull. ; 

 also H. chiysostomum, Michx.) — Alleghany Mountains. (Eu.) 



61. H. populeum, Hedw. Monoecious; stems 2' -3' long, uTCgularly 

 branched ; branches ascending or arcuate ; leaves gradually and narrowly lance- 

 olate, acuminate, serrulate above ; the costa continuous ; capsules numerous, 

 small, roundish-ovate, suberect ; a small species, with yellowish silky foliage. 

 (H. reflexum, James in Proceed. Acad. Philad., 1855.) — Kocks and tmnks of 

 trees, in hilly districts. (Eu.) 



62. H. Fendleri, SuUiv. (Muse. Bor.-Amer. No. 334.) Polygamous 

 (staminate, pistillate, and hermaphrodite flowers on the same plant) ; stems 

 l'-2' long, creeping; branches erect, simple or ramulose; leaves ovate-lanceo- 

 late, seiTulate, semicostatc ; capsule oval-oblong, suberect, rarely unequal and 

 inclined ; ciliolaj of the peristome rudimentary or absent ; operculum conic, with 

 a shoi-t obtuse rostnim ; pedicels slightly scabrous below, smooth above : resem- 

 bles the European H. velutinum, L. (Leskea Fendleri, Sulliv. in Mem. Amer. 

 Acad. n. ser. 4, p. 170, t. I.) — Dry rocks, Santa Fe, New Mexico, Fendler. 



63. H. reflexum, Starke. Monoecious; stemsprocumbent, filiform, 2'- 

 3' long ; branches crowded, slender, arcuate ; leaves rather distant, decurrent, 

 broadly or deltoid-ovate, suddenly and narrowly lanceolate, spreading at their 

 point, seiTulate, heavily costate to the apex ; capsule globose-ovate, horizontal. 

 (H. subtenue, James, I. c.) — Kocks, and base of trees, Wliite Mountains of New 

 Hampshire, OaJces, James. (Eu.) 



64. II. Sttirkii, Web. & Mohr. Monoecious ; resembles the last species ; 

 but is much larger, and has a slenderer costa extending about half-way up the 

 leaf. — White Mountains of New Hampshire, Oakes, (Eu. ) 



65. H. rivulare, Bryol. Europ. Distinguished from H. ratabulum by 

 its somewhat larger size, more rigid stems, fii-mer, wider, shorter, and more sud- 

 denly acuminated leaves, with a heavier costa, papillose pedicels (I'-lj' long), 

 and essentially by its dioecious inflorescence. — Wet rocks, mountains of New- 

 England and of Pennsylvania. (Eu.) 



66. H. Novae- AngliSE, Sulliv. & Lesqx. (Muse. Bor.-Amer. No. 338.) 

 Dioecious; stems l^'-2' long, rather stiff; main divisions arcuate-ascending. 



