48G 



MR, H. N. DIXON: THE MOSSES OF THE 



T) 



T) 



This appears to give quite sufficient grounds for separating the Borneo plant 



IJ 



I) 



This I have not seon< It is 



separated by Brotherus from i>- (jmndis, next to which it is placed, by 

 having the lamellfc S-stratose, uith the cells of the lower rows irregularly 

 quadrate, instead of irregularly rhomboid in Z-i strata as in D. grandis. 

 This obviously brings it very near to the Borneo phjnt; but it may bo 

 -assumed that the apical cell is less differentiated in jO, papuana, the lamella? 

 3-stratoso instead of (generally) 4-stratose, and the leaves in D. papuana 

 would aj)pear when dry to be slightly, at Iciist, crisped. 



The Borneo plant may therefore^ as Gropp has concluded (Journ. Linn, 

 Soc*^ Bot. xlii. 209), be retained as J). altissJma^ Geh. 



Dawsonia CRisriFOLTA, Dixon, sp. nov. (Pb 28. fig, 3.) 



Stirps pro o^eneris sat (jracilis^ 15-20 cm. alta^ 'perrhjida^ snbflexuosa. 

 Folia suberocta, eonfertissima^ siccitate rigide falcato-crispatay cirea 10 mm. 

 longa vel hreviora^ comaliu in caulibus fortilibns longiorn, siccis minus 

 crisputis, falcatis ; e basi late oblonga aurantiaca circa tertiam partem folii 

 lono'itudinis anpiante ; marginibus e basi fere lamina} fortiter argute spinu- 

 loso-dentatis, cellulis marginalibus incrasmtis^ clortgatis^ Unearibus^ Umlum 

 jdiis minusve notatiun instruentibus. Lamellre circa 50, apice subcrenatDe, e 

 cellulis subquadratis seriehus G-8 superpositis instructx^ apicaiibus majoribus, 

 hyalinis, sectionc transversa ultioribus, vLv latioribvs quam ceteris. Seta 

 2 cm. longa, crassiuscula. Theca o[)erculafa erecta, maturitate horizontalis 

 vel nutans, cinn opercido vioo 1 cm. Jonga. Opercuhun^ peristomium^ generis. 

 Calyptra baud visa. Plahta mascula ignota. 



Camps XIIl-XI, 10,300-8075 ft., Feb. 1013. 



Very distinct from its congeners in the comparativoly short leaves, crisped 

 Avhen dry, the whole plant very rigid, the capsule larger than in the allied 

 species. 



Dawsonia LiMBATA, Dixon, sp. nov, (PI. 28. fig. 4.) 



D.B 



3 



caulibus 10-12 cm. 



altis 



D. Beccarii ad 40 cm.) 



(illius species conialia 20-21 mm.), laniellro e cellulis 6-9 serielms super- 

 positis, cellula apicali scctione altiore, perangusta. Folia niadida stricte 

 <jrecto-patentia, sicca appressa, fa^pe pulchre spiraliter, seriata, e basi pro 



more majora quam ea 

 Cellule marsiuales, proe 



D 



breviore, apice minus acida. 



ungustisshnum alhum^ maturitate rufo-fxisciim ins 

 sola nota, caulis e floribus pluribus, 2-3j continua. 

 Camp Via, 3050 ft., Jan. IG, 1913. 



Planta mascula 



