ix, c, 2 Merrill: The Plants of Guam 131 
DISCH I Dl A R. Brown 
D1SCHID1A PUBERULA Decne. in DC. Prodr. 8 (1844) 631; Safford 263. 
An endemic species known only from the original collection made in 
the Marianne Islands, presumably in Guam, by Gaudichaud. 
TELOSMA Coville 
TELOSMA ODOR AT I SSI M A (Lour.) Coville in Contr. U. S. Nat. Herb. 9 
(1905) 384. 
Cynanchum odoratissimum Lour. FI. Cochinch. (1790) 166. 
Pergularia odoratissima Sm. Ic. Piet. (1790-93) t. 16. 
An introduced and cultivated species in Guam, fide Safford, as in the 
Philippines, known as mil-leguas in both places. In 1907 Mr. N. E. Brown 
proposed the generic name Prageluria for Pergularia auct., non Linnaeus, 
at that time being ignorant of the fact that Coville had already published 
the new name Telosma. 
CONVOLVULACEAE 
CALON YCTION Choisy 
CALONYCTION ALBUM (Linn.) House in Bull. Torr. Bot. Club. 31 (1904) 
591. 
Ipomoea alba Linn. Sp. PI. (1753) 161. 
Ipomoea longiflora R. Br. Prodr. (1810) 591. 
G. E. S. 166, along the seashore, Cabras Island, locally known as alaihai- 
tasi. 
Tropics of both hemispheres, near the seashore, perhaps introduced in 
tropical America. 
IPOMOEA Linnaeus 
0 
IPOMOEA BATATAS (Linn.) Poir. in Lam. Encycl. 6 (1804) 14; Safford 
297. 
Convolvulus batatas Linn. Sp. PI. (1753) 154. 
G. E. S. 222, commonly cultivated. 
A native of tropical America, now cultivated in all warm countries. 
IPOMOEA CONGEST A R. Br. Prodr. (1810) 485; Safford 298. 
McGregor 501. 
Luzon to northern Australia and Polynesia. 
IPOMOEA GRACILIS R. Br. Prodr. (1810) 484; House in Ann. N. Y. 
Acad. Sci. 18 (1908) 248. 
Ipomoea denticulata Choisy in Mem. Soc. Phys. Genev. 6 (1833) 467, 
non R. Br. 
Ipomoea choisyana W. F. Wight in Contr. U. S. Nat. Herb. 9 (1905) 
298. 
McGregor 449, G. E. S. 96, 254, local names lagun, lagun tase. 
Along the seashore in the tropics of both hemispheres. 
