Supplement.] 226 



FISSIDENS (§ OCTODICERAS) JULIANUS {Savi) Schimp. 



Autoicous ; growing in water, in lax dark green tufts. Leaves 

 distant, long and narrow, sword-shaped, not bordered. Capsule small, 

 erect ; calyptra conical ; teeth of peristome short, irregularly truncate. 

 (T. CXXV, C.) 



Syn. — Muscus pinnatus, aquaticus, ramosissimus, UnaritefoUis Michfi.i Gen. pi. 114 (1728). 



Skitophyllum fontanum La Ptl. in Desv. Joum. Bot 1813, p. 52, t. 34, £ 2. 



FonUnalis Juliana Savi Bot etrusc. iii, 107 (1818), et in Polun. FI. Veron. iii, 385 (1824). 



Octodiceras JuUanum Brid. Bry. uni». ii, 678 (1827). Br. Sch. Bry. Eur. fasc. 17 (1842). 

 LiHPR. in Rabekh. D. kr. fl. Laubm. i, 457, fig. 145 (1887). Ddhcan in Joum. Bot 1902, 

 p. 51, t 430. 



Fissidens debiUs Schwaeg. Suppl. I, P. II, p. 11 (1816). 



Conomiirium JuUanum Mont. Annal. sc nat 1837, p. 246, t. 4. Schimp. CoroUar. 21 

 (1855), Synops. Ill (i860), 2 ed. 122. De Not. SyUab. 87 (1838), EpUogo 474. 

 Sghwaeg. Suppl. IV, t. 313 (1842). BouLAY Muse. Fr. 531 11884). Hosnot Muse. 

 Gall. S3, t. 16 (1884). 



Fissidens Julianus Schimp. in Flora 1838, P. I, p. 271. C. Mueli. Synops. i, 44 (1849). 



Octodiceras fontoMum Lindb. Bidrag. Moss. Synon. 23 (1863). 



Schistophyllum JuUanum Lindb. Muse. Seand. 13 (1879). 



Autoicous ; growing in water in lax dark green tufts, stems very 

 slender, 2 — 4 in. long, the leaves distant, patent, long lineal, entire, not 

 limbate, the nerve vanishing below the apex, the superior lamina about 

 3 times the length of the vaginant part, and the inferior not reaching the 

 base ; cells rounded-hexagonal. Fruit on a short axillar branch, seta short 

 and fleshy, calyptra conical, capsule small, erect, goblet-shaped, lid long 

 and conical, rostrate teeth irregular and imperfect Male infl. gemmiform, 

 axillar, without paraphyses. 



Hab. — On stones and wood in streams. Fr. 4 — 6, rare. 



In the Severn at Bewdley and near Stourport, and for an extent of 13 miles (Mr. J. B. 

 Duncan 1901) !! sterile. 



This elegant moss differs in no way from the genus Fissidens except in its 

 aquatic habit and imperfectly developed peristome. The fruit, when mature, drops 

 out of the vaginula and floats away, or sinks to the bottom. 



DITRICHUM VAGINANS {Sull) Hampe. 



Dioicous ; in small dense tufts. Leaves stiff, erect, from a longish 

 ovate base gradually tapering to a point, nerved to apex. Capsule erect, 

 cylindric, lid conical. (T. CXXV, E.) 



Syn. — Trichostomum vaginans Sullxv. Muse. Alleg. no. 176 (1846). Sulliv. Lesq. Muse. bor. 

 amer. no. 154 p.p. 



Leptotrichum homomallum p. strictum Schimp. Synops. 144 (i860). 



