FLORA OF THE GALAPAGOS ISLANDS. 103 
species (C. introflexcus (Hedw.) Mitt.) is incorrect so far as C. intro- 
Jlexus, at least, is concerned, as was shown by Duby 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. 
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. 
Dattonta, Hook. & Tayl. 
D. rosusta, Angstr. Oefv. 1873, no. 5, p. 117. — GaLaPpaGos 
Ips.: Andersson. Endemic. 
Macromirtrioum, Brid. 
M. scasriseTum, Wils. in Hook. f. (3), 165; Anderss. (1), 125, & 
(2), 87. Reduced by Mitten, Jour. Linn. Soc. xii. 210, to JL longi- 
folium, Brid. Bryol. Univ. i. 809, 738 (1826), which is Orthotrichum 
longifolium, Hook. Muse. Exot. t. 44 (1818). — Aprnepon Ist. : alt. 
250 m., 25 June, 1899, Snodgrass & Heller. Cuarves Ist.: 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. 
Papiiiaria, C. Muell. 
P, nicrescens, Jaeg. Adumb. vii. 265 (1876). Neekera nigrescens, 
Schw. Suppl. 3, i. t. 244 (1828); Anderss. (1), 125, & (2), 37.— 
Cartes Ist.: Andersson, ? James Ist.: Darwin (“Neckera vel 
Pilotrichum sp.?” Hook. f. (8), 165). Neither seen by the writer. 
Further distrib. general in North and South America. 
PiLoTrRIcHELLaA, C. Muell. 
P. Anperssoxn, Jaeg.. Adumb. vii. 262 (1876). Neckera Anders- 
Sonii, C. Muell. Bot. Zeit. xiv. 170 (1856); Anderss. (2), 87.— 
Cuartes Ist.: Andersson. Endemic. Not seen by the writer. 
F. NIGRICANS, Besch. Prodr. Bry. Mex. 79. Hypnum nigrescens, 
Hook. in Kunth, Syn. Pl. Equin, i. 64 (1822), —Gaxaragos Ips.: 
