394 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th See. 



ASCLEPIADACEAE 

 Tassadia Decne. 



T. Colubrina Decne. DC. Prod. VIII. 579 (1844) : common 

 at 650 ft. (No. 321). Further distr. Brazil. 



CONVOLVULACEAE 

 Ipomoea L. 



I. cathartica Poir. Diet. Supl. IV. 633 (1816) : common on 

 open hillsides, often covering the ground and vegetation with a 

 dense mass of vines, (Nos. 322-23). Further distr. S. U. S., 

 W. Ind., N. S. Am. 



I. Pes-caprae (L.) Sweet, Hort. Sub. Lond. 35 (1818). 

 Convolvulus Pes-caprae L. Sp. PI. 159 (1753) : common on 

 the beach at Wafter Bay, (No. 324). Widely distributed on 

 tropical shores. 



RUBIACEAE 

 Bertiera Blum. 



B. angustifolia Benth. Bot. Sulph. 103 (1844) : bushes 6-8 

 ft. high at 300 ft. (No. 325). Endemic. 



CofFea L. 



C. arabica L. Sp. PI. 172 (1753) : evidently an introduced 

 species. Widely distributed in tropical regions through culti- 

 vation. 



Rustia Klotz. 



R. occidentalis (Benth.) Hemsl. Biolog. Cent. Am. Bot. II. 

 14 (1881-82). Exostemma occidentale Benth. Bot. Sulph. 104 

 (1844) : occasional bushes, (No. 315). Further distr. Cent. 



Am., N. S. Am. 



Spermacoce L. 



S. ocymoides Burm Fl. Ind. 34 (1768) : common in open 

 grassy places on the banks of the stream near Wafer Bay, 

 (Nos. 316-17). Widely distributed in tropical regions. 



