■■ : \^ 



WOLLASTOX EXPEDITION TO DUTCH XEW GUINEA. 499 



I am, indeeJ, quite unable to detect any difference between tlie Jayan and 

 tlie Australian plants. The only liesitation I feel in uniting tliem arises 



trom the apparent absence from Java (and, so far, from New Guinea) of the 

 typical form of the species, L. camUdum. 



Leucobryum cyathifolium, Dixon, sp. nov. 



Ferroluslum ; habitu et colore omnino fere L. javensis (Brid.). Polia 



reviora, ohtusiora, minus rogulariter falcata, 1 cm. lon^ra et ultra o basi 



erecta, latissima, oblonga, cito in acumen subtequilongum, refiexum, late 



lingulato-lanceolatum angustatn, ncumine perconcavo, subtubuloso, apice 



'/ 



CellulfG mar- 



ginales (lamina vera) hyaliuro luferne 4-8-scriat,'X}, perlat^r, rhomhoideo- 

 redangvlares^ strpe s'uimoidecv, limbum pelhicidum didindtiDi, latum, suporne 

 angustatum sod usque ad npicem bene notatum instruentos. Tolii sectio 

 snhhomostrosica, hyalocystte quum dorsales tum ventrales plerumque ubiquo 

 unistratoste, nidus juxta basin perpauca" cnjusque paginte hie illic i)ariete 



» 



Fr act lis 



transversa divisa?. CI 

 ignotus. 

 (No. 9.) 



A fine and very distinct species, easily to be cont'oundod with L. javense 

 from outward appearance, but quite distinct in structure. L. javense has the 

 loaves ''heterostrosic'' in section, the section at the leaf-base showinf several 

 strata of cells both above and below the chlorocysts ; here there is a sin<r]e 

 series both ventrally and dorsally, only occasionally one or two cells on 

 either face being transversely divided. The central or suhccntral position 

 of the chlorocysts throughout the leaf is a very unusual feature ; Cardot 

 mentions only one similar species, L. serieeum, Broth., which is a quite 

 different ])lant. 



The very broadly obtuse, spoon-shaped leaf-apex also separates it at once 

 from L. jacense, ns weW as from most or all of the species with a similar 

 habit. The border of the leaf also is very marked ; in L. Javense 

 most species — it is formed of very narrow, elongate, hyaline cells, and, those 

 being in numerous rows (often 5 or G) near the leaf-base, it is broad and 



as in 



conspicuous. Here it is still more conspicuous and usually broader not 

 from being composed of a larger number of rows of cells, but because each 

 individual cell is wider, two or three times as wide as in L. javense, or wider 

 especially those of the innermost row. The pores in the longitudinal internal 

 walls of these cells are very numerous and conspicuous. 



CALYMPERACEiE. 



Syrrhopodon Geiieebii, Par., Ind. 1248. (S. graciUs, Geh. in Bibl. Bot 

 Heft xiii. (1889) 2; nee S. gracilis, Mitt, in Seem'. Fl. Vit , 388). 



