EUCEPHALOZIA. 155 



6. Cephalozia hibernica, Spn/ce MS. 



Cephcdozia hibernica, Spruce MS. Pears, in " Irish Naturalist," Dec. (1894). 



Dioicous, creeping amongst mosses, with few rooting flagella, 

 smal], of a whitish, crystalline or pale green colour. Stems stout, 

 flexuose, ramose, procumbent or somewhat erect, plano-convex, 

 antical aspect 3-4 cells wide, postical with a band of 4 x 5 much 

 smaller cells; branches postical, irregular, sometimes attenuate 

 and gemmiparous, gemmae capitate ; rootlets hyaline, on the lower 

 part of the stem, or at the apices of the arcuate stolons. Leaves 

 approximate or contiguous, alternate, almost horizontally inserted, 

 decurrent at the base, subalate, plane, so that the stem appears 

 bialate, bifid from a third to the middle of the length, sinus 

 rounded, segments subconnivent or erect, sharply acuminate, apical 

 cells 2-4 in single series, texture delicate, cells large, hyaline, 

 4-, 5- and 6-sided, surface pitted when dry as in Cejjh. comiivem, 

 walls thick, trigones wanting. Stipules absent. Flowers ? ter- 

 minal on very short postical branches, bracts oblong, divided to 

 about two-thirds into two unequal lanceolate-acuminate segments, 

 sub-bract smaller, divided to about the middle, sometimes with a 

 third small segment on one side, segments acute ; bracteole oblong, 

 bifid to about the middle or entire, unidentate near the middle, 

 segments lanceolate-acuminate ; sub-bracteole oval, divided to 

 about \, segments obtuse, third sub-bracteole small, slightly bifid. 

 Immature perianths only met with, mouth fringed with long cilia, 

 12 to 15, each composed of 3 or 4 long single cells. Androecia 

 on short postical branches, perigonial bracts 4-5 pairs, closely 

 imbricate, complicate-concave, oval, bilobed to about one- third ; 

 antheridia single, oval. 



Dimensions. — Stems ^ inch long, with leaves r25 mm. wide; 

 diameter of stem '2 mm. ; leaves '7 mm. x "45 mm., segments 

 •25 mm., -2 mm., '5 mm. x '3 mm., seg. "2 mm., "IS mm., 

 •55 mm. x '35 mm., seg. '2 mm., '175 mm. ; branch leaves "35 mm. 

 X 2 mm. ; seg. -15 mm., "1 mm. ; cells '04 mm. x '05 mm., 

 •05 mm. X -06 mm., '04 mm. x -04 mm., seg. -005 mm., '02 mm.. 



