Fabronia. MUSCI. 4Q5 



2. F. Neo-Mexicana, Sulliv. & Lesq. Stem 8 to 12 inches long, the numerous 

 branches and branchlets elongated, naked below, rather rigid : leaves dull yellowish 

 green, oblong-lanceolate, more or less folded, areolation linear ; perichaitial leaves 

 obovate-oblong, abruptly long-cuspidate : capsule ovate-oblong : peristome red ; teeth 

 20-jointed ; inner cone perfect. Muse. Am.-Bor. Exsicc. n. 224 ; Sulliv. Icon. Muse. 

 Suppl. 76, t. 57. F. antipyretica, var., Sulliv. & Lesq. 1. c. 2 ed. n. 334. F. Mer- 

 cediana, Lesq. Mem. Calif. Acad. i. 28. 



On rocks in Merced River (Bolandcr) ; New Mexico ( Wright) ; Colorado, Hall. 



F. LESCURII, Sulliv., an eastern species, has been found in Oregon, Hall. It is soft and flaccid, 

 with the bright green leaves long-lanceolate and concave, the capsule short-cylindric, and the 

 peristome granulose-papillose : teeth 20 - 25-jointed and the cilia not connected below. 



45. DICHELYMA, Myrin. 



Floating perennials, with slender stems attached only at base, remotely and sub- 

 distichously branched. Leaves 3-ranked, elongated, narrow, falcate and folded, with 

 slender costa, more or less serrulate ; areolation rhombic. Flowers dioecious, bud- 

 like, lateral : perich<etium very long, the inner leaves sheathing, nerveless. Calyptra 

 dimidiate or cucullate. Capsule pedicellate, immersed or more or less exserted, oval 

 or oblong ; operculum conic-rostrate ; annulus none. Peristome double, nearly as 

 in Fontinalis ; teeth less hygroscopic, dehiscing along the medial line; cilia longer 

 than the teeth, connected by crossbars the whole length or only at the apex or 

 wholly free. 



The six species are all North American, two of them also European. It is doubtful whether 

 any species has been collected in California. Sterile specimens of a moss found in King's and 

 Kaweah Rivers (Brewer), and on Mount Dana and in swamps near Mendocino City (Bolander), 

 which are referred by Lesquereux (Mem. Calif. Acad. i. 28) to D. Swarzii, Lindb., were considered 

 by Austin to be a variety of Hypnum exannulatum. Schimper states (Syn. Muse. Eur. 2 ed. 

 559) that D. Swarzii is probably Hypnum fluitans. 



D. FALCATUM, Myrin. Leaves crowded, falcate-secund, lanceolate-subulate, the costa ceasing 

 at the apex or somewhat excurrent, nearly entire; the inner perichsetial leaves very long, lorate: 

 Calyptra cucullate, clasping the pedicel : capsule oblong on a slender exserted pedicel, ferruginous ; 

 operculum as long or longer, acutely acuminate-conic : peristome bright red, the inner much ex- 

 ceeding the outer, tessellate throughout. Brnch & Schimp. Bryol. Eur. t. 433. Fontinalis fal- 

 cnta, Hedw. Muse. Frond, iii, t. 24. D. cylindricarpum, Austin, Coult. Bot. Gazette, ii. 111. 

 Columbia River, Oregon, Hall. 



D. UXCIXATUM, Mitten. More slender and somewhat more pinnate, the falcate-secund long- 

 attenuate lanceolate leaves terminated by the excurrent nerve, which is smooth above the serru- 

 late margins and denticulate only at the apex ; perichaetial leaves not twisted : calyptra not ad- 

 herent to the pedicel : inner cone perfect, exceeding the teeth about one-fifth of their length. 

 Journ. Liuu. Soc. viii. 44, t. 8. Fort Colville, Washington Territory, Lyall. 



46. FABBONIA, Raddi. 



Very small slender creeping perennials, on the trunks of trees or on rocks ; 

 branches erect, somewhat fascicled. Leaves bright or pale green, very thin, shining, 

 ovate-lanceolate, filiform ly acuminate, dentate or ciliate, scarcely costate ; areolation 

 very loose, rhombic, at the base quadrate. Flowers monoecious, lateral, bud-like. 

 Calyptra cucullate, smooth. Capsule ovate-pyriform or subspherical, erect on a 

 rather short pedicel, of loose undulate-quadrate cells, which are transversely rectan- 

 gular at the mouth ; operculum convex-conic or rostellate ; annulus none. Peristome 

 single, of 16 flat linear-lanceolate teeth, remotely jointed. 



A genus of about 20 very widely scattered species. Of the five North American species the 

 following is the only one that is also European. 



1. F. pusilla, Eaddi. Densely cespitose, the erect simple branches a line or two 

 high : leaves yellowish green, spreading, irregularly laciuiate-ciliate to below the 



