484 MR. H. N. DiXON: THE MOSSES OF THE 



spocics. I have g\y on D. pajmana^ F. Mnollor, a species wliich I do not 

 knoWj iitidor both lieadlno's of loaves straight or crisped when dry ; Gelioeb 

 in Bibl. But. xliv. (1808) 14^ describes them as '^ subtorqimfa/' but lie 

 does not refer to tliis in liis paper in the 'Revue Bryoh^triqno/ ISOG, whore, 

 indeed, ho says ho has not been able to find any essential differences to 

 separate it horn 7). s}fperha. This does not imply that his later judonient 

 considered it identical with that species, as at tlic time of the earlier paper 

 the lamella? had not been minutely studied ; but it seems to imply tliat 

 D. papuana does not show any marked difference in so macroscopic a 

 character as the twistintr of the leaves. 



Key to the Kew Guinea Species of Daw soma. 



1 J Leaves more or less cri^peJ \vlie]i dry , 2. 



Leaves straiglit when dry 3. 



f) 1 Leaves 25-35 mm. long, seta 3-3'5 cm papuana. 



Leaves 9-10 mm, long, seta 2 cm crisjnfoUa. 



o I Leaves sliorf, appressed wlien dry 



4. 



/ Leaves very long, spreading when dry 5. • 



i J Stems 20-40 cm., leaves erect when moist , Beccan'i, 



I Stems 10-15 cm.^ leaves spreading when moist limbata. 



r I r.amellfc 3-4 stratose 6. 



Lamellfe 5-9 stratose mj)erba, 



P \ Apical cell of lamellae in section much \vider than the re^st (jujantea. 



\ Apical coll scarcely wider 7. 



- I Lower cel1>; of lamella?, viewed laterally, irregularly quadrate papuana, 



I-ower cells of lamellse irregularly rhomboid grandis. 



Note on D. ALTissiMA, Geh. 



In Rev. Bryol. 1896, pp. 73-79, Gohecb has glvon the outline of a 

 proposed monoo-raph on Daivsonia, to he elaborated with the help of 

 Schlie]iliacke. He refers there to a spccinicn of Daicsoma^ collecled in 

 1877-78 on Mt. Kinahalu, BornoOj by F, AV. Burbidge, and sent to him by 

 Dr. Beccarh This has been determined, probably by Mitten^ as 1). superha^ 

 but on account of its greater Iieight, G(diceb considered it in all probability 

 a difTeront species, and named it provisionally I), aUif'sima. At the close of 

 his arHcle ho appealed to Britit^h bryologists for further information on ilie 

 subject of tills plant, but the request has, so far as I am awai'Cj [)assed 

 unnoticed ; nor has the proposed monograph ever aj)pearcd, I recently 

 looked through the cover of Dawsonia at Ke^v, and found there a sheet of 

 Bni'bidge's Daivsonia from (1) ^' Noi'th Borneo^ Burbidge^ 1877-78/^ 

 together with several other sheets of the Borneo phuit — viz, (2) ^^Kina 

 Baloii, GOOO ft.j Borneo, II, Low/' in ILu'b. Hooker; (3) '' Mt, Mandarin, 



