1 '- - t 



■- ; 



M - I- 



4 - 



m- *• 



iV 



WOLLASTOK EXl^EDlTIOK TO DUTCH NEW GUINEA. 



509 



Folia 1 iriin. longa, e l)asi angusta coarctata ovatd vel elUptica^ acuta^ parum 

 acuminata^ pereoncava^ marglniJni'^ late explanatis^ e medio folio distauter 

 minute, aj)icem versus argute grossiuscule denticnlatis, deliticulationibus 



^ " I ■ 



erectis^ haad patentihus. Cellula? angusti.ssinie lineares, leeA'os, perinci'assatpoj 

 parletibus valde (seJ ob teniiitaloni indistinote) porosis^ infimpe aurantiaca?, 

 alares circa trin-ie ve.siculos^, iiicrassatte, olongata^, auriculas parvas dilatatas^ 

 bene notatas instruentes. Cetera ignota, 



(No. 38.) 



A very pretty and quite distinct little species, Fleischer (• Nova Guinea,' 



V -■ 



ijica 



hri/ophilum^ and S. cucidUgerum (Bry, Jav.), 

 'with Trichosteleum epiphyUum^ Ren. & Card., as a further genus Clastolryella, 

 Tlie j)resent plant would belong to one or other of these genera, but I cannot 



s:iy which, as no 



dir 



lao'nosis IS iiiveii, anci any jjeneric ( 



1 ii 



lifferences between the 

 species involved ap})oar to nie e^^ceedirigly slight.. The leaves in S, roseum 

 are wider and more shortly pointed than in any of these species. I have not 

 detected any brood-filatncnts, such as occur in S* cuculliijerum anil S, ritficaide* 

 The areolation is ratlior marked. The cell-walls are thickened and highly 

 porose, but the colls and walls being of extreme tenuity and of nearly equal, 

 width, it is not easy to distinguish the w^all from the lumen, while the pores 

 are, except under certain illumination, almost invisible ; the only indication 

 being often an apparent sinuation of the internal walls. Under otlier 

 illumination the pores may appear quite clearly here and there, bearing the 

 false appearance of being transverse cell-walls. 



HYPXODENDRACE/E. 



Hypnodendron mvEKSiFOLiUM, Broth, & Geh. in Ofv. Finska Vet.-Soc. 

 Forh. xl. 191, 



(No. 4.9.) A fine species, very distinct in the dimorphous foliation of the 



branches. Recorded further by Miss Gibbs from N.AV. Dutch New Guinea. 



Mniodendkon HellwigiIj Broth,, in Engler's Bot. Jabrb. xvi. (1892) 29. 

 (No. 45,), c. fr. 



NOTE. — When this paper was written, during* 1917, the genus HymenodontopAis (see 

 p. 480) was described as new. Since it ^vas in type I have received the numhers of 

 MIedwigia * published during the war^ and I find that Herzogj in 1910^ (vol. Ivii. p. 235) 

 has published a new genus of mosses under this name^ based on a phmt collected by 

 Stresenaann in Ceram (Moluccas); and by a very curious coincidence the genus (if not 

 the species) is identical with the New Guinea one. Herzog has figured his plant in a later 

 number of ^Iledwigia' (voL Ixi. p, 290). In two respects his species — II, Strese?nanmi — 

 is described as differing by rather important characters from the New Guinea plant, 

 viz. the perichinetluni Is described and figured as produced on basal rhizoids; wliile in 

 II. rhizogonioidcs it is latoial among the cauline tomentuni 5 and the leaf-margin is 



