368 LEUCODONTACE^E. 



89. HABRODON Schp. 



Slender, very small, with creeping stems and sub-erect, 

 filiform branches. Leaves minute, ovate-acuminate, entire, nerve- 

 less. Cells elliptic-rounded, smooth. Capsule oblong-cylindrical ; 

 annulus broad ; peristome single, arising below the mouth of the 

 capsule. Dioicous. 



1. Habrodon Notarisii Schp. (H. perpusillus Lindb.) 

 (Tab. XLIX. L.). 



Minute, very slender, almost prostrate, the branches filiform, 

 all pointing one way, hardly 2 lines long. Leaves minute, ovate- 

 cordate or ovate-lanceolate, longly acuminate, hardly excavate at 

 base, not concave, closely imbricated and appressed when dry, 

 spreading when moist ; margin plane, entire or slightly crenulate ; 

 nerve none ; cells small, oval or elliptical, at margin shorter, at 

 mid-base more elongated, towards basal margin short, rounded- 

 quadrate, in many rows. Seta short, capsule minute, narrowly 

 oblong ; lid conical. Dioicous. 



Hab. On the bark of trees, chiefly in subalpine districts ; rare. Fruit very rare, 

 spring. 



• 



The most minute and delicate species of the present Order ; differing from the 

 minute species of Amblystegium in the branches more terete and julaceous when dry 

 from the closely set, appressed leaves ; and in the shorter, oval cells. 



90. MYRINIA Schp. 



Stems creeping, sparingly and irregularly branched. Leaves 

 oval, entire, shortly nerved. Areolation rhomboid, quadrate at 

 angles, smooth. Annulus none. Peristome double. 



1. Myrinia pulvinata Schp. (Leskea pulvinata Wahl.; 

 Helicodontium pulvinatum Lindb.) (Tab. XLIX. M.). 



In soft, dense, deep green tufts, stems prostrate with erect 

 or slightly curved, slender branches about |-inch in height. 

 Branches fiexuose, somewhat obtuse, sub-julaceous when dry. 

 Leaves small, spreading or subsecund, appressed and imbricated 

 when dry, widely oval, or bluntly apiculate or acute, margin 

 plane, entire ; nerve very faint, single, reaching about \ up the 

 leaf. Cells rather large, widely oval-rhomboid, at basal wings 

 quadrate-rectangular , all wide, smooth. Seta about three lines 

 long; capsule oval-oblong, slightly curved and unequal; lid 

 conical ; outer peristome pale, inner deep yellow. Monoicous. 



