444 



RUMPHIUS'S HERBARIUM AMBOINENSE 



fuisse introductas, quod nomen etiam testatur apud omnes fere Orientales 

 populos, qui Batattas colunt. 



The names cited by Rumphius, batattas, uby castila, ima castila 

 (that is, Spanish yam), lutu castila, castela, and camotes, are all 

 of American origin or refer to the origin of the plant in the 

 Moluccas through the agency of the Spaniards. 



IPOMOEA REPTANS (Linn.) Poir. in Lam. Encycl. Suppl. 3 (1813) 460. 



Convolvulus reptans Linn. Sp. PL (1753) 158, p. p. quoad syn. Rheed. 

 lpomoea aquatica Forsk. Fl. Aegypt. Arab. (1775) 44. 

 Olus vagum Rumph. Herb. Amb. 5: 419, t. 155, f. 1. 



This characteristic species is not represented in our Amboina 

 collections, but Olus vagum Rumph. is unmistakably identical 

 with lpomoea reptans Poir. (/. aquatica Forsk.) as currently 

 interpreted. The reduction was first made by Linnaeus himself, 

 in Stickman Herb. Amb. (1754) 24, Amoen. Acad. 4 (1759) 132, 

 Sp. PL ed. 2 (1762) 225, which is additional evidence in support 

 of the idea that Linnaeus's conception of Convolvulus reptans 

 was based on Ballel, Rheed. Hort. Malabar. 11: 107, t. 52, rather 

 than on the actual specimen so named in his herbarium. Hallier 

 f., Meded. Rijks Herb. (1910) 21, states that the actual specimen 

 in the Linnean herbarium is Merremia caespitosa Hallier f., 

 a species totally different from lpomoea reptans Poir. as cur- 

 rently interpreted.* 



I accept the plate and description of Rheede, cited by Linnaeus, 

 as typifying Convolvulus reptans Linn., as this interpretation 

 will avoid the change of the specific name for the plant now 

 called Merremia caespitosa Hallier f. Linnaeus, Syst. ed. 10 

 (1759) 922, erroneously reduces Olus vagum to Convolvulus 

 medium Linn., with which species it has little in common. 

 Choisy considers Convolvulus medium to be Anisaea medium 

 (Linn.) Choisy, but Index Kewensis reduces it to lpomoea 

 denticulata Choisy. 



IPOMOEA PES-CAPRAE (Linn.) Roth Nov. PI. Sp. (1821) 109. 

 Convolvulus pes-caprae Linn. Sp. PI. (1753) 159. 



Convolvulus bilobatus Roxb. Hort. Beng. (1814) 14, Fl. Ind. ed. 2, 

 1 (1832) 485. 



Convolvulus maritimus Desr. in Lam. Encycl. 3 (1791) 550. 

 Convolvulus marinus major Rumph. Herb. Amb. 5: 433, t. 159, f. 1. 

 Amboina, Robinson PL Rumph. Amb. 400, September 13, 1913, on the 

 beach near the town of Amboina. 



* See Merrill in Philip. Journ. Sci. 7 (1912) Bot. 244, for a discussion of 

 the synonymy involved. 



