FLORA OF THE GALAPAGOS ISLANDS. 103 



species (C. introfiexus (Hedw.) Mitt.) is incorrect so far as C. intro- 

 jiexus, at least, is concerned, as was shown by Duly and C. Mueller, but 

 probably Mitten was justified in uniting some of the species referred to. 

 I am unable to ascertain whether C. lamellatus or C. polytrichoides 

 was first published since both species were described in 1838. The 

 present species may be referred to C. lamellatus, Mont., to which it is 

 at least very closely related, but the scanty and sterile material prevents 

 an accurate determination. The specimens in their leaf structure agree 

 well with the C. lamellatus of the Wilkes Expedition in herb. Sullivant. 



Daltonia, Hook. & Tayl. 



o 



D. robusta, Angstr. Oefv. 1873, no. 5, p. 117. — Galapagos 

 Ids. : Andersson. Endemic. 



Macromitrium, Brid. 



M. scabrisetum, Wils. in Hook. f. (3), 165; Anderss. (1), 125, & 

 (2), 37. Reduced by Mitten, Jour. Linn. Soc. xii. 210, to M.longi- 

 folium, Brid. Bryol. Univ. i. 309, 738 (1826), which is Orthotrichum 

 longifolhtm, Hook. Muse. Exot. t. 44 (1818). — Abingdon Isl. : alt. 

 250 m., 25 June, 1899, Snodgrass & Heller. Charles Isl. : Darwin,, 

 The material secured by Messrs. Snodgrass & Heller consists of a 

 single small specimen with lower leaf cells papillose and rather trans- 

 parent. The specimen was sterile and the absence of the seta made 

 accurate determination impossible, and furthermore the leaves themselves 

 were not in very good condition, being old and more or less torn. 



Papillaria, C. Muell. 



P. nigrescens, Jaeg. Adumb. vii. 265 (1876). Neckera nigrescens, 

 Schw. Suppl. 3, i. t. 244 (1828); Anderss. (1), 125, & (2), 37.— 

 CnAULES Isl. : Andersson. ? James Isl. : Darwin (" Neckera vel 

 Pilotriclmm sp. ? " Hook. f. (3), 165). Neither seen by the writer. 

 Further distrib. general in North and South America. 



PlLOTRICHELLA, C. Muell. 



P. Anderssonii, Jaeg. Adumb. vii. 262 (1876). Neckera Anders- 

 sonii, C. Muell. Bot. Zeit. xiv. 170 (1856); Anderss. (2), 37.— 

 Charles Isl. : Andersson. Endemic. Not seen by the writer. 



P. nigricans, Besch. Prodr. Bry. Mex. 79. Hypnum nigrescens, 

 Hook, in Kunth, Syn. PI. Equin. i. 64(1822). — Galapagos Ids.: 



