Vor.I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS 107 
soil to 1000 feet. (no. 2084). CHARLEs IsL.: common in open 
places among rocks near the shore (no. 2085); Cuevas Bay, 
Baur; CHATHAM Isx.: north side, Andersson; Wreck Bay, 
rare on sand beaches (no. 2086). Duncan Ist.: Snodgrass 
and Heller. GARDNER Ist. (near Hoop Ist.): Snodgrass 
and Heller. Hoop Ist.: Snodgrass and Heller. IUNDEFATIGA- 
BLE Ist.: Academy Bay, common in lava crevices near sea 
level (no. 2087); north side, Snodgrass and Heller. JAMES 
Ist.: Andersson; James Bay, Snodgrass and Heller. Towrr 
Ist.: Snodgrass and Heller. Further distr. U. S., Mex., W. 
tod/S;. Am: 
Sclerothrix Pres] 
S. fasciculata Presl, Symb. Bot. IT. 3, t. 53 (1858) ; Rob. 
(1), 178.—ALBEMARLE Ist.: Iguana Cove, (no. 2089); 
Tagus Cove, abundant at 4000 ft. (no. 2088). James Ist.: 
James Bay, Snodgrass and Heller. NARBoRouGH IsL.: south 
side, Snodgrass and Heller. Further distr. Mex., S. Am. 
CACTACEAE 
Cereus Mill. 
C. galapagensis Weber, Bull. du Mus. d’Hist. Nat. Paris 
P99) S12 '(1899) ; Rob. (1), 179: *C..Thouersn Weber; ic. 
312; Rob. (1), 180.—CuHart.es IsL.: common in the vicinity 
of the shore (no. 2090). CHATHAM IsL.: Basso Point, occa- 
sional specimens were seen-up to 800 ft.; Sappho Cove, grows 
very abundantly on the recent lava beds between the cove and 
Finger Point, as well as on the older lava on the east side of the 
cove, where it occurs abundantly in forests of Bursera graveo- 
lens. This species reaches its largest size at this place, often 
attaining a height of 25 or more feet. The articulations are 
unusually thick here, sometimes being as much as 10-12 inches 
in diameter ; Wreck Bay, common on the rocky coast and on the 
sides and tops of exposed lava hills (no. 2091). INDEFATIGA- 
BLE Ist.: Academy Bay, no specimens of this species were 
secured, but a photograph taken here shows a specimen very 
similar to this species in general appearance. Its presence, 
however, is doubtful. Endemic. 
Weber, |. c., described two species of Cereus from Charles 
Isl., viz., C. galapagensis and C. Thouarsti, but gave no charac- 
