Vol. I] STEWART— BOTANY OF THE GALAPAGOS ISLANDS 55 



Forma albemarlensis nov. forma. 



Foliis subappressis ad apices dilatis 1.9 cm. longis, 5 mm. latis. 



Albemarle Isl. : Turtle Cove, common on sand beaches, 

 (no. 1360). Plate II, fig. 2. Endemic. 



Forma chathamensis Rob. & Greenm. (1), 140; Rob. (1), 

 135. — Chatham Isl. : Wreck Bay, Baur. Endemic. 



Forma hoodensis Rob. & Greenm. (1), 140; Rob. (1), 135. 

 — Gardner Isl. (near Hood Isl.) : common on sand beaches 

 (no. 1361). Hood Isl.: Baur; Snodgrass and Heller. En- 

 demic. 



A. spinosus L. Sp. PI. 991 (1753); Rob. (1), 135.— 

 Charles Isl. : Andersson. Of wide distribution. 



A. squamulatus (Anderss.) Rob. Proc. Am. Acad. XLIIL 

 22 (1907). Scleropus squamulatus Anderss. (1), 162, (2), 

 60. A. squarrulosus Uline & Bray, Bot. Gaz. XIX. 270 

 (1894); Rob. (1), 135. — Albemarle Isl.: Cowley Bay, 

 occasional at 2000 ft. (no. 1363) ; Tagus Cove, occasional in 

 tufaceous soil at 100 ft. (no. 1362). Charles Isl.: Snod- 

 grass and Heller. Chatham Isl. : Andersson. Duncan 

 Isl. : Snodgrass and Heller. Indefatigable Isl. : Academy 

 Bay, (no. 1364) ; north side, Snodgrass and Heller; northeast 

 side, fairly abundant in loose ashy soil near the shore (no. 

 1365). James Isl. : James Bay, fairly common in rocky soil 

 on the lower parts (no. 1356). Jervis Isl. : ^awr. Seymour 

 IsL.^ north : Snodgrass and Heller. Endemic. 



A. urceolatus Benth. Bot. Sulph. 158 (1844); Rob. (1), 

 136. — Indefatigable Isl. : Andersson. Further distr. adja- 

 cent S. Am. from Peru northward. Lower California ace. to 

 Rob. 1. c. 



A. viridis L. Sp. PI. ed. 2, 1405 (1763) ; Rob. (1), 136.— 

 Albemarle Isl. : Villamil, occasional to 650 ft., abundant at 

 1300 ft., (nos. 1357-1359). Barrington Isl.: Snodgrass 

 and Heller. Chatham Isl. : Wreck Bay, abundant in sandy 

 soil near the shore and in clay soil in open sunny places at 50 

 ft. (nos. 1360-1361). Further distr. general in warm coun- 

 tries. 



January 11. 1911 



