218 THE JOUCVAL OF BOTANY 



spinulose-sen-ate, lo to 20 teeth, some hamate ; postical margin with 

 usually 2 large teeth, one or two small teeth frequently added; cells 

 medimn size, quadrate; walls somewhat thick; trigones wanting or 

 verN^ small ; lobule decurrent, oblong-quadrate, 5 to 6 times smaller 

 than the lobe, tumid at the base, keel rounded, comjilanate on the 

 upper portion or involute, free margin with 2 or 3 one-celled papillae 

 or entire. Underleaves 3 to 4 times smaller than the leaves, 2 to 

 3 times broader than the stem, rotund or broadl}' to longW rotund, 

 sometimes with a narrow base and slightly winged, margin entire or 

 rarelv near the base sparingly and minutel}^ denticulate. Inflorescence 

 inonoicous ; $ on stem or innovant branches. Bracts smaller than 

 the perianth, oblong-oval, margin serrate, lobule minute ; bracteole 

 oval-spathulate, concave, sometimes slightly retuse, margin entire. 

 Perianth pyriform, Avinged to about the middle, wings narrow, spinu- 

 lose-dentate, antical side plane, postical with a prominent obtuse keel, 

 entire or with 1 to 3 teeth near the apex; slightly rostellate, apex 

 spinulose-dentate, teeth 3 to 4 cells long. 



Andrcecia numerous on stem or branches, amentula very slender ; 

 cT bracts G to 14 pairs, oval, entire, lobule two-thirds smaller, entire ; 

 bracteole obovate-cuneate. 



Dimensions. Stems 1 to 1^ inch long, with leaves 2-5 mm. to 

 3 mm. wide; leaves I'o mm. X 'T-j mm., 1-25 x '75 mm.; lobule 

 •35 X -25 mm., '3 x '25 mm., '3 mm. x '2 mm. ; cells '03 mm. ; under- 

 leaves '35 mm. x '35 mm., -4 mm. x "S mm. ; bracts '8 mm. X -5 nun. ; 

 bracteole '75 mm. X -55 mm. ; perianth 1 nuu. X '(5 mm. (middle) ; 

 teeth at apex -2 mm. ; capsule '4 mm. X '375 mm. ; male catkin 

 •75 mm. long X -15 mm. broad ; male bracts -275 mm. X '175 mm.: 

 male bracteole ^125 mm. X -1 mm. 



Hah. Mountain Lake, Dominica, Jan. 1896. 



Ohs. Stephani detached from a leaf and put in a separate packet 

 stems of this species, and named it Lcjeunea lunulaia Nees. Another 

 specimen from a palm leaf, similarly detached, he named it L. Sieher- 

 icuio G. Both specimens are the same and monoicous. 



When he examined this collection Stephani was of opinion that 

 i. Sieheriana was fovmd in the West Indies; but from his latest 

 contribution to the subject (v. 173) he had evidently changed his 

 views, as he only records L. Siehfriana G. from Mauritius, the original 

 station for this species. He also records L. charophyUa only from 

 Peru, ignoring the record of L. cliceropliylla var. 2^aroica S. from the 

 AVest Indies in Spruce's Hep. Elliottian*, also those of A. W. Evans, 

 "Hepaticajof Puerto Kico" in Bull. Torrey Club, xxxi. 182-22G, 1904, 

 where L. cli(sropliyUa is given as a synonym of L. Sieheriana, 

 following the original views of Stephani and of Schiffner. 



The flrst reference to L. Sieheriana from the West Indies is in a 

 note by Spruce in Hep. Elliottianae under L. cliccroplnjUa (p. 33G) : 

 " Stephani has lately referred this plant to L. Sieheriana Gottsch., a 

 Mauritian species, described in Syn. Hep. p. 328, with ' foliis margine 

 supero apiceque minute serrato-denticulatis, infere subintegerrimis ' ; 

 whereas L. clicera'pliyUa has the leaves equally and somewhat strongly 

 dentate all round. Moreover L. Sieheriana is said to be sterile, and 



