140 THE JOURNAL OF BOTANY 



this connection it is necessary to compare with it A. laxuvi C. M., 

 Schensi, China, which I have examined in the British Museum 

 (leg. Giraldi, det. C. Miiller, no. 2078). At first sight this differs 

 markedly from A. Duthiei in the excurrent nerve and cells more 

 ohscure, very papillose, and the back of the nerve papillose. But 

 the lower leaves agree exactly with the Indian plant, the cells 

 vary in size and distinctness, as they do in A. Duthiei. The back 

 of the nerve also varies, and in Mitten's plant it varies from 

 smooth to distinctly papillose {A. Duthiei is described as nervo 

 . . . dorso Isevi), so that I do not think this can be held to have 

 any importance. The leaf margin in the Chinese plant, while 

 normally plane, is very occasionally slightly reflexed below. Tlie 

 basal cells are shorter, but otherwise agree ; as also does the 

 capsule (not at all, as described by C. Miiller, " angustissime 

 eylindrica "), so far as the condition permits of comparison. The 

 plants are certainly very nearly allied, but in view of the excurrent 

 nerve, almost plane margins, and shorter basal cells of the Chinese 

 plant, I should hesitate to unite them, unless further investigation 

 should result in the discovery of intermediate links. 



Orthotrichum (Calyptoporus) Griffithii Mitt. MS., sp. nov. 

 (Tab. 513, fig. 2.) Corticola ; dense caespitulosum, immiliivi, vix 

 •75 cm. altum. Folia densa, erecto-patentia, j^lerumque ohtusa, 

 rarius snbobtusa, late oblonga, ad 3 mm. longa, ad -75 mm. lata, 

 marginibus ad basin breviter anguste recurvis, su])erne ]}lanis, sai)e 

 omnino fere i^lanis ; costa tenuis, profunde canaliculata, dorso 

 valde prominens. Cellulae incrassatas, subrotundo-ellipticee, 8-10 /x 

 latae, humillime papillosae vel omnino fere laeves, basilares paullo 

 elongatse, anguste lineares. Autoicum. Vaginula pilosa vel sub- 

 nuda ; calyptra baud inflata, parce pilosa vel subnuda. Seta per- 

 brevis, vix -5 mm. alta, e summa ochrea parum excedens. Theca 

 2)arva, immersa vel suhemergens, ad 2 mm. longa, madefacta 

 elliptica, collo hrevissiino, circa quartam partem thecae aequante, 

 apud basin nullo modo in setavi decurrente, sed abnvpte rotundo ; 

 siccitate apud orificium angustata, superne leniter plicata, ve- 

 tustate (vacua) vix sub ore constricta, cum collo paullo an- 

 gustato subcylindrica. Striae 8, debiles, e 3-4 tantu7ii seriebus 

 celkilarum parietibus longitudinalibus incrassatis instructae, vix 

 ad medium thecae productae, luteo-aurantiacae ; intervallorum 

 cellulae in seriebus phiribus (8-12) dispositce, pallide luteae, rectan- 

 gulares parietibus tenuioribus ; stomata immersa, numerosa, per 

 totam ^-partem inferiorem theca sparscB ; cellulae circumsistentes 

 valde protuber antes, stomata tamen plermnque minime obtegentes. 

 Operculum rostellatum. Peristomium fuscum, dentes in paria 8 

 connati, vetustate medio fissi, dense papillosi, papillis nunc irre- 

 gulariter nunc in striolis verticalibus vel obliquis dispositis ; cilia 8, 

 fusco-aurantiaca, filiformia, solidiuscula, nonnunquam papillosa. 

 Sporge 16-24 /x, aurantiacae, sublaeves. 



Hab. " On trees, Oongar, 5000 " ; Mitten in sched. 

 Allied to 0. Schimperi Hamm., 0. pumilum Sw., and 0. micro- 

 carpum De Not. In the form of the capsule base it is very 

 distinct, and only comparable to 0. Schimperi, from which it 



