REMARKS ON DRUMMOND's MUSCI AMERICANI. 4-37 



97. D. Schreherianum. — This is the var. -3. Grevilleanum 

 of Bridel, Br. Univ. vol. i. p. 450 : it is probably a distinct 

 species. 



102. D. Scottiannm. — Certainly different from the British 

 Moss so Called. The specimens very much resemble some of 

 the varieties of D. polycarpum, and may belong to D. inon~ 

 tanum, Hedvv. Sp. M. t. 35. 



104. D. Richardsoni. — This appears to be Oncophorus 

 Wahlenbergiif Bridel, Br. Univ. vol. i. p. 400, {D. virens, 

 Wahlenb.) 



114. Didymodon ohlongifolium. — Exceedingly like Dicra- 

 num lalifolium, No. 109, and perhaps only a state of the 

 same Moss. 



115. D. latifolium, and 135, Torti\]a bri/oides, nov. sp. — 

 These are probably one and the same species. They are 

 closely allied also to D. oblongifolium, and to Dicrmium lati- 



folium. It is even somewhat doubtful whether JVeissia latifolia^ 

 No. 70, may not be the same species under another phasis. 



127. Y). fragile, nov, sp. — The teeth of a broken peristome 

 examined were evidently inclined as in Tortula, to which 

 genus it perhaps belongs. 



137. Tortula humilis. — None of the specimens agree well 

 with Hedwig's figure, Sp. M. t. 25, and some of them must 

 be referred to Didymodon oblongifolium, No. 1 14. 



138. T. convoluta The best figure of this Moss is given 



in Hedwig, Muse. Frond, v. i. t. 32, where the leaves are cor- 

 rectly represented as oblong and obtuse : they are often de- 

 scribed as lanceolate and acute. 



139. T. /a//aa;.— Probably Bridel's var. y. rejiexa, " foliis 

 minoribus siccitate non tortilibus," and extremely near to 

 Barbula gracilis, Schwaeg)-. Suppl. ^.34. 



145. T. suberecta, nov. sp. — Inconveniently near (as a spe- 

 cies) to T. bryoides, No. 135. The peristome is, however, 

 more decidedly that of a Tortula. 



158. Orthotrichum speciosum.— Most of the specimens are 

 correctly named ; but in one instance O. pulchelbim was found 

 mixed with this species. 



