Hypnace^.] i;3 \Isopterygium. 



attenuated into a long subulate point; margin flat, entire, and one of 

 the wings often incurved ; nerves obsolete or none ; cells very long and 

 narrow, subflexuose, not different at angles. Perichastial bracts erect and 

 appressed, inner lanceolate, narrowed into a faintly toothed piliform 

 subula ; seta longish red ; capsule suberect or cernuous, oblong or cylin- 

 draceous, with a long neck, arcuate when dry, not sulcate, pale brown ; 

 lid conical, rostellate ; teeth narrow, yellowish, inner pale, the processes 

 not perforated, cilia two. 



Hab. — On earth, on damp shady mountain rocks. Fr. lo, very rare. 



Ben Wyvis, Ross (McKinlay 1867). Ben Narnain, Argyll {Murray 1896), Lochay bridge, 

 Craig Chailleach and Ben Heasgarnich, Perth {Dixon 189^). Ben Laoigh and Ben 

 Doureann, Argyll (JBinstead aai Dixon 1898) ! 1 Ben Clibrick and Ben Uidhe, Sutherland 

 {Salmon and Dixon 1899). Ben Cruban, Killin {Cocks 1900) 1 1 



This pretty moss varies considerably in size and also in the flagella, which are 

 sometimes very numerous ; it may always be recognised by the extremely long and 

 narrow cells of the leaf. The fruit is extremely rare, and has not been found in 

 Britain. 



3, ISOPTERYGIUM DEPRESSUM (Bruch) Mitt. 



Dioicous ; in prostrate pinnately branched tufts. Leaves crowded, 

 spreading, complanate ovate, entire or subserrulate, rather obtuse, with 

 two short nerves or none. Capsule ovate-oblong, cernpous ; lid rostrate. 

 (T. CXVI, B.) 



Syn. — Hypnum depressum Bruch in Flora 1824, p. 763. Rabenh. D. kr. fl. II, s. 3, 285 (1848). 

 C. MUELL. Synops. ii, 258 (1851). WiLS. Bry. Brit. 409, t. S9 (1855). Berk. Handb. 

 br. m. 94 (1863). HoBK. Synop. 153 (1873). Boul. Muse. Fr. loi (1884). 



Hypnum conferium f. depressum Brid. Bry. univ. ii, 767 ('827). 



Hypnum Wissgrillii Garovag. Bry. Austr. 79 (1840). 



Rhynchostegium depressum Br. Sch. Bry. Eur. fasc. 49 — 51, p. 8, t, 6 (1852). Schimp. 

 Synops. 567 (i860), 2 ed. 682. Hobk. Synops. 2 ed. 207 (1884). 



Eurhynchium depressum Milde Bry. Siles. 299 (1869). HusN. Muse. Gall. 343, t. 99 (1893). 



Isopterygium depressum Mitt, in Journ. Linn. Soc. xii, 497 (1869), Lindb. Muse. Scand. 

 39 (1879)- 



Plagiothecium depressum Dixon Stud. Handb. 431 (1896). Limpr. in Rabenh. D. kr. fl. 

 Laubm. iii, 280 (1897). 



Dioicous ; in soft depressed deep green glossy tufts, closely adhering 

 to stones, and with short creeping flat branches often yellowish at points. 

 Leaves crowded, bifarious, depressed, sometimes secund, the lateral diver- 

 gent and subcomplicate, longish oval, with a short point or submuticous ; 

 margin flat, entire or obsoletely serrate ; nerves two, short and indistinct 

 »r none ; cells with thin walls narrowly rhomboid, a few quadrate and 

 rectangular at angles. Perich. bracts gradually acuminate, erect, nerveless ; 

 seta short, reddish ; capsule cernuous, longish-oval, subincurved, brownish. 



