412 PROCEEDINGS OF THE ACADEMY OF [1898. 



CUCURBITACEJE. 



238. Sechium edule Swartz. Fl. Ind. Occ, II, 1,150 ; Biol. Centr. Anier. Bot., 1, 491. 



" The large, starchy root of this climber can be consumed as a 

 culinary vegetable, while the good-sized fruits are also edible. The 

 fruit often germinates before it drops. The plant bears, even in the 

 first year, and may ripen one hundred fruits a year. Cultivated up 

 to 5,000 feet in Jamaica" (Mueller). 



South Mexico, Santa Anita near Mexico (Bourgeau), Orizaba 

 (Botteri), valley of Cordova (Bourgeau); Panama, without locality 

 (Seemann) ; West Indies and Tropical South America. " Chow- 

 Chow" (Jamaica); " Chocho," "Chayota" (Mexico). 



COMPOSITJE. 



239. Senecio grandifolius Less, in Linnaea, V, (1830), 162 ; Biol. Centr. Anier. Bot., 



II, 240. 



South Mexico, region of Orizaba (Botteri, Bourgeau), valley of 

 Cordova (Bourgeau), Montecinos, Vera Cruz (Linden). 

 Orizaba, Aug. 26th (360). 



ADDENDA 



(with families omitted). 



240. Thalia dealbata Fras. Thai, dealbata, 1. 1 ; Bot. Mag., t. 1,690; Biol. Centr. 



Anier. Bot., Ill, 310. 



Aloug ditches of Mexican Central R. R., near Guadalajara. 



241. Nymphaea gracilis Zucc. in Abh. Akad. Muench., I (1832), 362; Biol. Centr. 



Amer. Bot., I,. 25. 



"A Mexican species of great merit, has large, handsome, star- 

 shaped white flowers, which are borne on stout stems well above the 

 foliage. It is worthy of note as being the only white day-blooming 

 tropical or tender species ; a very vigorous plant, free-flowering, the 

 flowers possessing a delicate fragrance, resembling Lily of the Val- 

 ley" (1897), Tricker, The Water Garden, p. 90, fig. on p. 91 and pi. 

 III. South Mexico, lakes near Oaxaca, 5,000 feet (Galeotti), Mex- 

 ico (Karwinski), ditches at Tacubaya, Valley of Mexico (Bourgeau), 

 Aguas Calientes (Hartweg). 



In ponds along Mexican Central R. R. near Guadalajara. 



242. Talinum Greenmanii Harsbberger in Bull. Torrey Bot. Club, XXIV, 183,Apr. 

 24, 1897, Plate 299, Fig. 4. 



Volcanic gravel, Sierra del Ajusco, Mexico, 8,500 feet. Possibly 

 it is T. humile described by E. L. Greene. Pringle Plantce mexicance, 



