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



(no. 3513), Chatham Isl. : common, 900-1000 ft, (no. 

 3514). James Isl.: James Bay, common in moist woodland 

 at 2100 ft. (no. 3515). Further distr. Brazil. 



Psychotria L. 

 P. angustata Anderss. (1), 193, (2), 78, t. 9, f . 1 ; Rob. (1), 

 207. — Charles Isl. : Darwin. Endemic. 



P. rufipes Hook. f. (3), 220; Rob. (1), 207.— Abingdon 

 Isl.: common bushes around 1500 ft. (no. 3517). Albe- 

 marle Isl. : Iguana Cove, Snodgrass and Heller; Villamil, 

 common bushes in woodland around 500 ft. Charles Isl. : 

 occasional bushes in woodland around 1000 ft. Chatham 

 Isl. : Wreck Bay, occasional bushes in woodland, 300-700 ft. 

 Indefatigable Isl. : Academy Bay, bushes 5-6 ft. high above 

 400 ft., one of the most common bushes in the open areas 

 around 550 ft.; northwest side, occasional bushes at 450 ft., 

 abundant above 700 ft. James Isl. : James Bay, occasional 

 low bushes at 900 ft., more or less abundant in woodland 

 above this elevation, forming dense thickets around the top of 

 the mountain at 2800 ft., (no. 3523). Endemic. 



Relbunium Endl. 



R. hypocarpium (L.) Hemsl. ? Biolog. Cent.-Am. Bot. II. 63 

 (1881-1882). Valantia hypocarpia L. Sp. PI. ed. 2, 149 

 (1763).— Charles Isl.: rare at 1300 ft. (no. 3524). The 

 specimen is sterile but agrees closely in other respects with 

 specimens of this species in the Gray Herbarium. It is possi- 

 ble that this may be the Rubia sp. which was collected on 

 Charles Isl. by Darwin and was mentioned by Hooker f. (3), 

 216. Further distr. Mex., W. Ind., S. Am. 



Spermacoce L. 

 S. tenuior L. Sp. PI. 102 (1753) ; Rob. (1), 207.— Chath- 

 am Isl. : Baur. James Isl. : Darwin. Further distr. S. U. S., 

 Mex., W. Ind., S. Am. 



CUCURBITACEAE 

 Citrullus Neck, 



C. vulgaris Schrad. ex Eckl. & Zeyh. Enum. 279 (1836); 

 Rob. ( 1 ) , 207. — Albemarle Isl. : Turtle Cove, near the 



