134 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Chatham Isl. : southwest end, upper region, Bcmr, no. 28G (lib. Gr.). 

 Endemic. 

 »^ P. uncinatum, nov. sp., glabrum lignoso-carnosum ; caulibus tereti- 

 bus olivaceo-viridibus dichotomo ramosis; ramis arcuatis etiam teretibus 

 gracilibus ; internodiis elongatis ; foliis oppositis breviter petiolatis 

 lanceolatis vel ovati-laneeolatis integris 5-nervatis margine ad apicem 

 falcato-uncinatam revoluta basi cuneata ; spiels in dichotomis terniinabbus 

 elongatis saepius 7-nodosis ; floribus 4-seriatira immersis ; calycis segmen- 

 tis late deltoideis obtusis. — Narborough Isl. : southern part, common 

 on " palo santo " and coffee trees, at 300 to GOO m. alt., April, 1899, 

 Snodgrass & Heller, no. 325 (lib. Gr.). Endemic. Leaves 7 cm. 

 long, 1.6 to 2.3 cm. broad. Spikes 7 cm. long, segments 1.5 cm. long; 

 sheath short, sharply 2-pointed. Plate 1, fig. 1. 



POLYGOXACEAE. 



POLYGONU.M, L. 



P. ACUMINATUM, HBK..N0V. Gen. & Spec. ii. 178 (1817); Meisn. 

 in ^lart. Fl. Bras. v. pt. 1, 14, t. 4, & in DC. Prodr. xiv. 114; Griseb. 

 Fl. Brit. W. Ind. 161 ; Small, Monog. Gen. Polyg. 52, t. 13.— 

 Galapagos Ids. : ace. to Griseb. 1. c. Further distrib. trop. S. Am., 

 Centr. Am., W, Ind. 



P. galapagense, Caruel (1), 624. — Chatham Isl. : Chierdda 

 (hb. Kevv.). Endemic. 



CHENOPODIACEAE. 



Atriplfx, L. 



A. sp. — IxDEFATiGARLE Isl. : northern ])Avt, Snodgrass &, Heller, 

 no. 676 (hb. Gr.). Seymour Isl.: north, S)iodgrass & Heller, no. 

 571 (hb. Gr.). 



A. sp. — Wenman Isl. : Snodgrass & Heller, no. 9 (hb. Gr.). 



AMARANTACEAE. 



Alternanthera, Forsk. 



A. radicata, Hook. f. (4), 261, 262 ; Anderss. (1), 164, & (2), 60, 

 t. 3, f. 2. — A. acaulis, Anderss. (1), 164. — Chatham Isl. : Darwin; 

 in upper very dry region, Anders&on (hb. Gr.). Hood Isl.: Snod- 

 grass & Heller, no. 753 (hb. Gr.). Endemic. 



