128 PROCEEDINGS OF THE AMERICAN ACADEMY. 



C. McTisii, Anderss. (2), 53, in two forms; Rob. & Greenm. (1), 148 

 (var. 2>lenus). Mariscus Mutisii, HBK. Nov. Gen. &, Sp. i. 216, 

 t. Q>(j (1815); Kuntli, Eimm. ii. 124; Hook. f. (1), 178; Anderss. (1), 

 151. — Albkmaule IsL. : Macrae; Elizabeth Cove, Snodgrass & 

 Heller, no. 262 immature and doubtful (hb. Gr.) ; Tagus Cove, abun- 

 dant wherever a little soil occurs in cailons, lava fields, or on hillsides, 

 Snodgrass & Heller, nos. 894 (lib. Gr.), 190 also immature and 

 doubtful (hb. Gr.). Chawles Isl. : Andersson (hb. Gr.). Chatham 

 IsL. : dr)' places, middle region, Andersson; Baur. Gardner Isl.: 

 Snodgrass & Heller, no. 647 (hb. Gr.). Narbouough Isl. : Man- 

 grove Point, lava rock near beach and also inland, Snodgrass & Heller, 

 nos. 310 (hb. Gr.), 311 (hb. Gr.) ; southern part, 615 m. altitude, 

 abundant in heavy soil, Snodgrass & Heller, no. 334, a slender and 

 doubtful form (lib. Gr.). Seymour Isl. : south, Snodgrass & Heller, 

 no. 602 (hb. Gr.). 



C. ROTCNDUS, Hook. f. (3), 177; Anderss. (1), 153, & (2), 54; not 

 L? — Albemarle Isl.: Macrae, ex Hook, f., 1. c. According to 

 Hook. f. & Jacks. Ind. Kew. i. 698, the plant of Macrae was the Texan 

 C lutescens, Torr. & Hook., but ace. to Dr. N. L. Britton, who has 

 examined the type of the latter, the Texan plant was only a form or 

 variety of C. esculentus, L. 



C. RUBiGiNOSUS, Hook. f. (3), 178; Anderss. (1), 157, & (2), 56; 

 Rob. & Greenm. (1), 148, as to pi. from Duncan Isl. — Spiculis 

 oblongis, 6-10 mm. longis ; s(}uamulis 10-19. — Galapagos Ids.: 

 Goodridge, in part (hb. Gr.). Charles Isl.: Darwin. Chatham 

 Isl. : Snodgrass & Heller, no. 501 (hb. Gr.). Duncan Isl. : Baur, 

 no. 318 (hb. Gr.). Endemic. 



Var. cornutus, spiculis perbrevibus valde congestis ; squamulis 4-8. 

 — Mariscus cornutus, Anderss. (1), 151. Gyperus cornutus, Anderss. 

 (2), 53, t. 13, f. 1. C rubiginosus, Rob. & Greenm. (1), 148, as to 

 pi. from Chatham and Hood Ids. — Galapagos Ids.: Goodridge, in 

 part (hb. Gr.). Charles Isl. : Andersson (hb. Gr.). Chathaai 

 Isl. : Andersson (hb. Gr.) ; southwest end, middle region, Baur, no. 

 315 (hb. Gr.). Duncan Isl.: Snodgrass & Heller, no. 683 (hb. Gr.). 

 Hood Isl.: Baur, no. 314 (hb. Gr.). Seymour Isl.: south, Snod- 

 grass & Heller, no. 595 (hb. Gr.). Endemic. 



C. strigosus, L. Sp. 47 (1753); Hook. f. (3), 177; Anderss. (1), 

 153, & (2), 54 ? — Charles Isl.: Darwin. Chatham Isl.: Anders- 

 son, Further distrib. N. Am. I have seen no Galapageian specimens 



