HYPNACE^E.] 151 [Hyocomium. 



Dioicous ; in deep expanded tufts, dull yellow-green above, fuscous 

 below, glossy. Stem prostrate, without radicles, 2 4 in. long, with 

 broadly ovate paraphyllia at base of branches, often divided into two or 

 three ascending shoots, pectinately pinnate with close slender branches, 

 accrescent upward to above the middle and then decrescent to apex, 

 spreading horizontally. Stem-leaves densely crowded, falcato-secund, 

 entire, from a cordate base, broadly lanceolate, gradually narrowed into a 

 long subulate point, slightly decurrent at the rounded auricles, nerve of 

 two unequal legs or obsolete ; cells very narrow and linear, not papillose, 

 at base orange hexagono-rectangular, at the angles many small and 

 quadrate ; branch-leaves narrower hooked and longly acuminate, incurved 

 at margin. Fruit unknown. 



HAB. Rocky hollows on mountains. Summit of Ben Lawers (Stirton 1867) ! ! 

 Found in the Tyrol, Switzerland and Pyrenees. 



17. HYOCOMIUM Schimp. 



Bry. Eur. f. 4546 (1853). 



Growing on stones in streams, in bright green or yellowish tufts. 

 Stem-leaves broadly cordato-triangular, with a long acuminate point, 

 serrulate, nerve very short, forked; cells flexuose-linear, at angles 

 hexagono-rectangular. Capsule on a thick rough seta, turgid, oval, lid 

 convex. Der. VOKO/XOS living in places soaked with water. 



HYOCOMITTM FLAGELLARE (Dicks.) Schimp. 

 The only species. (T. CXII, E.) 



SYN.-tftf m flagellare (non HEDW.) DICKS. PI. crypt. Fasc. II, p. ia, excL syn. (1790). 



WITHER. Bot. arrang. 3 ed. iii, 856 (1796). SM. F . Brit. 1322 (1804). P. BEAUV. Prod . 



6 4 (r8o 5 ). HOOK. TAYL. Muse. Brit. 104 1818 . GRAY Nat arrang. i, 7&O l821 )- 



HOOK. Fl. Scot. P. 2, 145 (1821). BRID. Bry. univ. ii, 434 (1827). C. MUELL. Synops. 



11,436(1851). WILS. Bry. Brit. 384 (1855)- BERK. Handb. 115, t. 9 (1863). I 



Synops. 156 (1873). 



Hypnum armoricum BRID. Bry. univ. ii, 525. 

 Hypnum psendo-commutatum LA PYLAIE MS. 

 Hypnum umbratum (non HEDW.) SM. Eng. Bot. t. 2565. TURN. Muse. Hib. 158 (1804). 



iii, 151, f. 380 (1897). 

 Hypnum (Eurhynchium) flagellare BOUL. Muse. Fr. 118 (1884). 



