135 \Heterocladium. 



Svti.Hypnuni squarrosulum VOIT in STURM Deutsch. Fl. 2, fasc. n (1810), Muse. Herbip. 



Hypnum dimorphum BRID. Sp. muse. II, 149 (1812), Mant. 165 (1819), Bry. univ. ii, 581 

 (1827). FUNCK Moost. t. 49 (1821), GREV. Scot. Cr. Fl. iii, t. 160 (1826). HOOK. 

 TAYL. Muse. Brit. 2 ed. i8t, Suppl. t. 5 (1827). HUEBEN. Muse. germ. 664 (1833). 

 HOOK. Br. Fl. ii, 91 (1833). DE NOT. Syllab. 14 (1838). WILS. Bry. Brit. 368, t. 35 

 (1855). C. MUELL. Synops. ii, 490 (1851). HOBK. Synops. 152 (1873). 



Hypnum Halleri Var. dimorphum SCHWAEG. Suppl. I, P. II, 283 (1816). 



Heterodadium dimorphum BR. SCH. Bry. Eur. fasc. 4951, p. 3, t. i (1852). SCHIMP. 

 Synops. 494 (1860), 2 ed. 606. BERK. Handb. 134 (1863). MILDE Bry. Siles. 269 

 (1869). DE NOT. Epilogo 237 (1869). HOBK. Synops. 2 ed. 191 (1884). LESQ. JAMES 

 Moss. N. Amer. 321 (1884). 



Heterodadium squarrosulum LINDB. Muse. Scand. 37 (1879). BOULAY Muse. Fr. 159 

 (1884). HUSN. Muse. gall. 306, t. 87 (1892). LIMPR. in RABENH. D. kr. fl. Laubm. ii, 

 816 (1895). Dix - JAMES. Stud. Handb. 379 (1896). 



Dioicous; in bright or yellowish green spreading tufts. Stem 

 creeping, with long rooting stolons, the leaves cordate decurrent, 

 acuminate, squarrosely recurved from middle, finely serrulate, papillose 

 on both sides, nerves short and indistinct ; branch leaves small, ovate, 

 erecto-patent when wet, imbricated when dry, serrated ; cells lineal in 

 middle, quadrate at margin. Perich. bracts sheathing broadly lanceolate, 

 recurved, nerveless ; seta purple. Capsule cernuous, oblong, lid conical ; 

 obtuse. 



HAB. On earth, and rocks in alpine localities. Fr. rare, 112. 



Near summit of Ben Lawers (Arnott) ! ! Clova (Dr. Stirton 1863). Glen Dole (Ferguson 

 1868) 1 1 



2. HETEROCLADIUM HETEROPTERUM (Bruch) Br. Sch. 



Dioicous; in dense procumbent tufts; branches subfasciculate ; 

 leaves obliquely imbricated, subsecund, ovate-acuminate, serrated, with 

 two short nerves. Capsule elliptic-oblong, cernuous, lid shortly rostrate. 

 (T. CIX, D.) 



SYN. Pterogonium heteropterum BRUCH in lit. SCHWAEG. Suppl. Ill, P. I, t. 210 b (1827). 



Hypnum catenulatum (non SCHWAEGR.) HOOK. TAYL. Muse. Brit. 96, t. 24 (1818). BRID. 

 Br. univ. ii, 450 p.p. (1827). 



Hvpnum heteropterum SPRUCE Muse. Pyren No. 56 (1847) et in A nn ' * g\ nat> hist ' 

 '1849, p. 272. C. MUELL. Synops. ii, 4 37 (1851). WILS. Bry. Brit. 369 (^55)- 



s? . 



(1896). LIMPR. in RABENH. D. kr. fl. Laubm. ii, 813 

 Lcptohymenium Ahnfeltii AONGSTR. in HARTM. Skand. fl. 10 ed. (1871). 



