54 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



AMARANTACEAE 

 Alternanthera Forsk. 



A. radicata Hook. f. (4), 261, 262; Rob. (1), 134.— 

 Chatham Isl. : Darwin. Charles Isl. : abundant in barren 

 places among lava boulders near the shore (no. 1347). Hood 

 Isl. : Snodgrass and Heller. Endemic. 



A. rigida Rob. & Greenm. (1), 143, 148; Rob. (1), 135.— 

 James Isl. : northeast side, occasional bushes 6-10 inches high 

 on lava beds near the shore, and to some extent at 700 ft., (no. 

 1348). Endemic. 



A. subscaposa Hook. f. (3), 189; Rob. (1), 135. — Charles 

 Isl. : Darwin. Duncan Isl. : rare in moist protected places 

 around 1250 ft. (no. 1349). Endemic. 



Amaranthus L. 



A. caracasanus HBK. Nov. Gen. & Sp. II. 195 (1817) ; Rob. 

 (1), 135. — Albemarle Isl.: Iguana Cove, rare on the sides 

 of the cliffs above the cove (no. 1351) ; Tagus Cove, Snod- 

 grass and Heller; Villamil, fairly common in open places on the 

 lower parts (no. 1350). Charles Isl.: abundant from the 

 beach to 1000 ft. during the rainy season (no. 1354). 

 Chatham Isl. : Wreck Bay, abundant near the shore (no. 

 1356). Indefatigable Isl.: northwest side, Andersson. 

 One of the common spring weeds of the islands where it occurs. 

 Further distr. northern S. Am. 



A. celosioides HBK. Nov. Gen. & Sp. II. 194 (1817) ; Rob. 

 (1), 135. — Charles Isl.: Darwin; Andersson. Chatham 

 Isl. : Andersson. Further distr. northern S. Am. 



A. sclerantoides Anderss. (2), 59, t. 2, f. 1; Rob. (1), 135. 

 — Barrington Isl. : Snodgrass and Heller. Charles Isl. : 

 common in open sunny places at 450 ft. (no. 1357). Chatham 

 Isl.: Wreck Bay, common near the shore (no. 1358). Nar- 

 BOROUGH Isl. : east side, Snodgrass and Heller. Endemic. 



Forma abingdonensis nov. forma. 



Ramulis diflfusis; foliis linearibus late patentibus circa 2.5 cm. longis, 

 ad apicem 1 mm. latis. 



Abingdon Isl. : occasional among rocks at 700 ft. (no. 

 1359). Plate II, fig. 1. .Endemic. 



