290 THE JOURNAL OF BOTANY 



As to uniting the two, however, there might well he difference of 

 opinion, whereas the reductions I have proposed above can, I think, he 

 established without controversy; and in view of the fact already 

 mentioned that there are possibly some minor differences in T. exas- 

 peratum, I do not propose its reduction here. 



THrsAXoMiTRiUM KiCHARDii SchwacgT. Suppl. ii. pt. i. p. 61, 

 t. 118 (1823). 



Campi/lopus Richardii Brid, Bry. univ. i. 474 (1826). 



Filopogon Richardii Broth, in Engl. & Prantl, Plianzenfam. 

 Musci, i. 336. 



Campylopus nigrescens Dubv in Mem. Soc. Phys Greneve, 



xix. 292 (1868). 



Thysanomitrium umhellatum W. Arn. Disp, p. 34 (1826). 



JPilopogon umheUatus Broth, op. et Joe. cit. 



Trichostomum Blumii Doz. & Molk. in Ann. sc. nat. 3rd ser. ii. 

 316 (1844). 



Campylopus Blumii Bry. jav. i. 81. 



Dicraiium Dozyanum C. M. Syn. i. 385 (1849). 



Dicranum nigrescens Mitt, in Journ. Linn. Soc, Bot. iii., Suppl. 

 p. 19 (1859). 



Campylopus nigrescens Jaeg. Adumbr. i. 121. 



Thysanomitrium Powellii C. M. in Engler's Bot. Jahrb. xxiii. 320. 



Pilopogon Powellii Broth, op. et loc. cit. 



Thysanomitrium hawaiicum C. M. in Flora. Ixxxii. 440 (1896) 

 (nee Dicranum hawaiicum in Bot. Zeit. 1862, p. 328; nee Campy- 

 lopus hawaiicus Jaeg. Adumbr. i. 140). 



Distr. Costa Kica ; Mexico ; Guadeloupe ; Andes Quitenses et 

 Peruv. ; Chile ; Hawaii ; Samoa ; Fiji ; Japan ; India ; Ceylon ; 

 Malaya ; Sunda Is. ; Philippines ; Tonkin ; Tahiti. 



Distribution or Cyrtopus setosus (Hedw.) Hook. f. 



The Handbook of the N.Z. Flora, p. 461, gives as the distribution 

 of this interesting monotypic genus, besides New Zealand, which may 

 be looked upon as its headquarters, Tasmania, South America, Sand- 

 wich Is. I can find no evidence in literature or in Hooker's her- 

 barium of its existence in S. America, and I think that must be 

 expunged from the distribution. Kodwa}^ (Tasmanian Bryophytes, 

 Mosses, p. 25) says of this " lieported from Tasmania, but no 

 Tasmanian specimens in the collections. Very possibly an error.'' 

 Undoubted specimens, in good fruit, however, are to be found in 

 Hooker's herb. "V. D. Ld., Cunningham, 42 " ; and "Van D. Land, 

 Gunn." There remains the Sandwich Is. record. I find no other 

 record of it in literature, C. Mueller makes no reference to it in the 

 Bryologia Ilawaiica. But there is at Kew (under Cyrtopus setosus) 

 a specimen in Herb. Hook, labelled in Hooker's hand " Neckera. 

 Mouna Haab, Sandwich Is., Lindley," which is undoubtedly the true 

 plant, c.fr. 



The distribution of so well-marked and conspicuous a species, 

 having its headquarters in New Zealand, and elsewhere known 

 (except in Tasmania) only from the Sandwich Is., is certainlj^ unusual, 

 and the evidence for it should be well founded. The above label, it 



