500 . PEDALINEA. 
5. Martynia proboscidea, Glox. Obs. p. 14; DC. Prodr. ix. p. 253; A. Gr. 
Synop. Fl. N. Am. ii. p. 321; Bot. Mag. t. 1056; Mill. Ic. t. 286. 
Martynia annua, Linn. Sp. Pl. p. 852, excl. syn. et patr. 
Proboscidea jussi@i, Schmidel, Icon. p. 49, tt. 12 et 13; Dene. in Ann. Sc. Nat. série 5, iii. p. 324. 
New Mexico.— Mexico. 
6. Martynia triloba, Ch. et Schl. in Linnea, v. p. 121; DC. Prodr. ix. p- 253. 
Proboscidea triloba, Dene. in Ann. Sc. Nat. série 5, iii. p. 3826. 
Soutn Mexico, near Vera Cruz (Schiede). 
[Sesamum indicum, Linn., an Asiatic member of the Order, often cultivated for the 
oil yielded by its seeds, is naturalized in some parts of Mexico.] 
Order CII. ACANTHACE. 
Acanthacee, Benth. et Hook. Gen. Plant. ii. p. 1060. 
Herbs, half-shrubs, rarely shrubs or trees. About 125 genera and 1500 species, 
generally diffused in warm countries, rare in temperate and absent from cold regions. 
1. MENDONCIA. 
Mendoncia, Vell. in Vand. Fl. Lusit. et Bras. p. 43, t. 3. fig. 22; Benth. et Hook. Gen. Plant. ii. 
p. 1072. 
About twenty shrubby and half-shrubby species, inhabiting Tropical America from 
Nicaragua to Brazil. 
1. Mendoncia costaricana, CEérst. in Vidensk. Meddel. 1854, p. 113; Walp. 
Ann. iii. p. 209. & p v4» | 
Costa Rica, Aguacate and Cartago (sted). 
2. Mendoncia, sp. (1. costaricana?). 
_ Nicaraeua, Chontales (Tate, 435); Panama, Mamei station (S. Hayes, 169). Hb. 
Kew, 
We have seen no authenticated specimen of M. costaricana; and CErsted’s description 
was drawn up from imperfect specimens; so that we are unable to determine whether 
this is a different species. 
[Thunbergia alata, Bojer; Hook. Exot. Fl. t.177, an African plant, is now naturalized 
in Mexico and Central America. ] 
2. ELYTRARIA. 
Elytraria, Vahl, Enum. i. p. 106; Benth. et Hook. Gen. Plant. ii, p. 1078. 
About four herbaceous species, divided into fourteen by some authors. ‘They are all 
Tropical-American, and one that is rare in America is widely dispersed in Tropical 
Asia and Africa. 
