Hypnace^.] 56 [Amblystegium- 



32. AMBLYSTEGIUM SMITHII (Swartz) Lindb. 



Autoicous ; in rigid olivaceous-green tufts ; branches erect or 

 procumbent, simple. Leaves patent, roundish with an obtuse point, 

 entire; nerve simple or forked, reaching beyond middle; cells very 

 narrow, not dilated at angles. Capsule small, suberect, ovate. 

 (T. XCV, A.) 



SYN.—Lesksa Smithii SwARTZ in LiLjEBL. Svensk FI. 3 ed. 549 (1816). Hartm. Skand. fl. 

 10 ed. (1871). 



Hypnum arcticum Sommerf. Suppl. Fl. lap. 65, t. 2 (1826). Hartm. Skand. fl. g ed. 

 C. MUELL. Synops. ii, 432 excl. syn. (1851). WiLS. Bry. br. 372 (1855). Schimp. 

 Synops. 638 (i860), 2 ed. 779. Berk. Handb. br. m. 104, t. 7 (1863). Milde Bry. siles. 

 374(1869). HoBK. Synops. 177 (1873). BouL. Muse. fr. 22 (1884). Lesq. James Moss. 

 N. Amer. 400 (1884). HuSN. Muse. gall. 414, t. 120 (1894). Dix. James. Stud. Handb. 

 484 (1896). 



Hypnum alpestre Grev. Scott, cr. fl. t. 282 (1828}. (non Swartz, Wahlenberg nee 

 Hedwig). Hook. Br. fl. ii, 79 (1833). 



Limnobitim arcticum Br. Sch. Bry. eur. fasc. 55 — 56, 6, t. 5 (1853). De Not. Epilogo 

 160 (1869). 



Stereodon arcticus Mitt, in Journ. Linn. soc. viii, 42 (1864). 



Amblystegium Smithii Lindb. Muse, scand. 33 (1879). 



Autoicous ; in lax rigid tufts, olivaceous-green or blackish. Stems 

 slender, naked below, horny, sparingly branched, without radicles, 

 branches simple obtuse. Leaves scariose, small, patent, ovato- 

 rotundate, shortly and bluntly acuminate, entire or very minutely 

 serrulate, plano-concave ; nerve strong, reaching half-way or more, 

 often forked, cells short and narrow, flexuose, not dilated at basal 

 angles, a single marginal row minute, subquadrate. Inner perich. 

 bracts elongate-lanceolate, serrate at margin, hardly sulcate, with a 

 long nerve. Capsule small, suberect or cernuous, with a distinct neck, 

 oval, arcuate when dry, not contracted below mouth, dark brown ; lid 

 mamillar, annulus of two rows of cells ; teeth of peristome short, 

 yellow, endostome pale, with short ciha. 



Hab, — Stones in mountain streams, not common. Fr. 6 — 7. 



Breadalbane range, Ben Lawers, generally fruiting freely {Lyon) ! ! Ben Challnm 

 (Greville). Clova mountains (Croall) ! ! Canlochan (Hunt 1868) ! ! 



H. Goulardi Schimp. is a slender, lax variety of this species. 



33- AMBLYSTEGITJM DILATATTJM {WUs.) Lindb. 



Autoicous ; bright green, with a rufous tint, rigid. Leaves 

 subsecund, suborbicular with a rounded obtuse point, cells very long 



