HYPNACEJE.] 125 [Isotheciuin. 



Plants very small and slender, stems short or elongated ; leaves narrow 

 acuminate, the cells thin and elongated, the quadrate basal only one or two 

 rows, margins nearly entire. 



HAB. Offchurch, Warwick (Bagnall 1893) ! ! Harlech, N. Wales (D. A. Jones 1899) ! ! Near 

 Kirkdale Cave (Ingham, 1899) ! ! 



Var. e. debile Braithw. 



Plants prostrate, pale yellowish green, branches straight, | i in. long 

 slender, simple or with a few short branchlets. Stem-leaves linear at base, 

 obovate above, with a short obsoletely serrate point ; branch-leaves erecto- 

 patent, oblong with a lanceolate-acuminate oblique point, quite entire, the 

 cells all less incrassate ; nerves about length of leaves. 



HAB. On the earth, bank of a ravine near Chickward, Kington, Herefordshire (Binstead 1897)! ! 



This is a Protean plant, and several other varieties may be established, 

 notably a fine robust form, with leaves tapering gradually into long setaceous 

 points like those of Var. y, found by Mr. Dixon on Ben Clibrick, Sutherlandshire. 

 It will be seen, these setaceous pointed leaves closely resemble those of the 

 stolons ; on this account I do not agree with my friend Kindberg, who regards 

 Var. ft., y. and . as distinct species. 



2. ISOTHECIUM VIVIPAEUM (Neck.) Lindb. 



Dioicous ; main stem creeping, stoloniform, secondary erect with 

 dendroid branches at top. Leaves ovate-oblong or elliptic, concave, 

 serrulate at apex, nerved half-way. Capsule ovate, regular, erect, lid 

 conic, shortly rostrate. (T. CVIII, B.) 



SYN. Hypnttin repens triangularibus august is foliis, rantulis subrotundis DILL, in RAY Synops. 

 3 ed. 83 (1724). 



Hypnutn myosuroidcs crassius, capsulis crectis DILL. Hist. muse. 316, t. 41, f. 50 (1741). 

 Hypnum myosuroidcs Var. ft. L. Sp. plant. 1130 (1753). 

 Hypnum viviparum NECK. Delic. gallo-belg. ii, 475 (1768). 

 Hypnum vagutn NECK, in Act. Acad. Theod.-palat. ii, 453 (1770). 



Hypnum tnyurum POLLICH Hist. PI. Palat. iii, 170 (1777). BRID. Muse. rec. II, P. II, 

 166 (1801), Sp. muse. II, 146 (1812), Mant. 164 (1819). SCHULTZ Fl. Starg. 333 (1806). 

 ROEHL. Deut. Fl. iii. 106 (1813). DE NOT. Syllab. 19 (1838). C. MUELL. Synops. ii, 

 498 (1851). 



Lcskea myosuroides HEDW. Fund. muse. II, 93 (1782). 



Hypnum myosuroidcs y. crassius WEB. Spic. fl. Goett. 94 (1778). 



Leskea vivipara TIMM Prodr. fl. Megap. n. 808 (1788). 



Hypnum myosuron GMEL. Syst. Nat. II, 1346 (1791). WITHER. Bot. arrang. 3 ed. iii, 

 865 (1796). 



Lcskea prolifera LUMNITZ. Fl. Poson. n. 1069 (1791). 



Hypnum myosuroides HEDW. (non L.) Muse, frond, iv, 20, t. 8 (1793), Sp. muse. 266 (1801). 



