452 ONAGRARIER, 
SoutH Mexico, Mazatlan (Coulter, 181), Cuernavaca (Bilimek, 158), Vera Cruz to 
Orizaba (Miiller).—Common in most Troricat Countrims. Hb. Kew. 
17. Jussiwa tomentosa, St.-Hil. Fl. Bras. Mérid. ii. p. 254. 
Sovrn Mexico, valley of Cordova (Bourgeau, 2046), region of Orizaba (Bourgeau).— 
Southward to Buenos Ayres. Hb. Kew. | 
18. Jussi#a venosa, Presl, Reliq. Henk. ii. p. 33. 
Mexico (Henke). 
19. Jussizea, sp. (? Jussiea angustifolia, var.). 
Panama, Chagres (Fender, 114). Hb. Kew. 
20. Jussiga, sp. 
Nicaragua, Chontales (Tate, 6). Hb. Kew. 
21. Jussiza, sp. 
GvuATEMALA, Duefias (Salvin, 1). Hb. Kew. 
22. Jussiza, sp. 
GuaTEMALA, Duefias (Salvin, 2). Hb. Kew, 
The actual number of species in Mexico and Central America is probably not more 
than ten or twelve. 
3. LUDWIGIA. 
Ludwigia, Linn. Gen. Plant. n. 153; Benth. et Hook. Gen. Plant. i. p. 788. 
About twenty herbaceous species, the greater part inhabiting North America, a few 
occurring in the Old World. 
1. Ludwigia palustris, Ell. Sk. i. p. 214; Torr. & Gr. Fl. N. Am. i. p. 525. 
Isnardia palustris, Linn. Sp. Pl. p. 175; DC. Prodr. iii. p. 61. 
Canapa and OrEGon southward to—SourH Mexico, Cuesta Grande de Chiconquiaco. 
(Schiede).—Central and Southern Evropz, Northern Arrica, and Central Asta. Hb., 
‘Kew. 
4, QENOTHERA. 
Gnothera, Linn. Gen. Plant. n. 469; Benth. et Hook. Gen. Plant. i. p 789. 
About 100 species, with few exceptions herbaceous plants, and all, except one Tas- 
manian species, indigenous only in America, though how some of them are widely 
dispersed in other countries. They inhabit temperate and subtropical regions both in 
the north and south. 
1. @nothera albicaulis, Nutt. in Am. Journ. Sc. ser. 2, xxxiv. p. 334. 
Ginothera pallida, Dougl. Bot. Reg. t. 1142. 
Western States of Norra America to—MExico. Hb. Kew. 
