Vor. I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS 155 
James Ist.: James Bay, Snodgrass and Heller. Jervis Ist.: 
Baur. NARBOROUGH IsL.: north side, occasional on lava beds 
(no. 649). Srtymour Ist., soutH: Snodgrass and Heller. 
Endemic. 
P. Jinifolia) 1: Syst: Nat. eds 1071221) (1760): Rob. .(P);; 
215.—CuHatHaAM Isz.: north side, Andersson. INDEFATIGA- 
BLE IsL.: northwest side, Andersson. SEYMOUR ISL., SOUTH: 
Snodgrass and Heller. Further distr. Mex., W. Ind., N. S. 
Am. 
P. subsquarrosa (Hook. f.) Sch. Bip. in Seem. Bot. Herald, 
309 (1852-1857). Lorentia subsquarrosa Hook. f. (3), 206. 
P. squarrosa Sch. |. c.; Rob. (1), 215.—Gatapacos Ips.: 
Habel. CHATHAM IsL.: north side, Darwin. Endemic. 
P. tenuifolia (DC.) Sch. Bip. in Seem. Bot. Herald, 309 
(1852-1857). Lorentia tenuifola DC. Prodr. V. 103 (1836). 
P. tenuifolia Sch. 1. c.; Rob. (1), 215.—ALBEMARLE IsL.: 
Black Bight, Snodgrass and Heller; Cowley Bay, common in 
pumice soil on the lower parts (no. 651); Elizabeth Bay, 
Snodgrass and Heller; Tagus Cove, common on the tufa hills 
around the cove (no. 650) ; Villamil, common in lava crevices 
near the coast (no. 652). CHARLES Ist.: Andersson; Snod- 
grass and Heller. CHATHAM IsxL.: Basso Point, occasional 
in lava crevices (no. 653) ; Wreck Bay, Snodgrass and Heller. 
INDEFATIGABLE IsL.: north side, in lava crevices near the 
beach (no. 654). NaArsBorouGH IsL.: (no. 655). SEYMOUR 
Ist., NoRTH: Snodgrass and Heller. Further distr. shores of 
Peru ? according to Robinson. 1. c. 
Porophyllum Vaill. 
P. ruderale (Jacq.) Cass. Dict. XLIII. 56 (1826). Kleinia 
ruderalis Jacq. Enum. 28 (1762). P. ellipticum Cass. 1. ¢.; 
Rob. (1), 215—Asinepon Ist.: Snodgrass and Heller. At- 
BEMARLE IsL.: Tagus Cove, abundant in tufaceous soil on the 
lower parts (no. 656). CHARLES IsL.: rare among rocks near 
the shore (no. 658). CHATHAM IsL.: Basso Point, occa- 
sional on recent lava (no. 659). Duncan Isu.: Snodgrass 
and Heller. Hoop Ist.: Baur; Snodgrass and Heller. INDE- 
FATIGABLE IsL.: northwest side, common on the lower parts 
