88 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Achiotillo. See Vismia ferruginea. 



Achr as chicle Pittier. Nispebo. Zapotillo (?). (Plate 29.) Sapotaceae. 



A tall tree, with medium-sized entire leaves and clusters of white flowers. 

 This species, according to Mr. Pittier, 6 is the source of most of the chicle used in 

 the manufacture of chewing gum, rather than Achr as zapota L. 



Expanation of Plate 29. — Achras chicle, from the type specimen, Pittier 8537, Guate- 

 mala. Natural size. 



Aguacatillo. See Phoebe amMgens. 



Alcatraz. See Aristolochia gigas. 



Aleli. See Oynandropsis speciosa. 



Almendro. See Lonchocarpus izabalanus. 



Amaranthus spinosus L. Htjisquilete. Uisquilete. Amaeanthaceae. 



A spiny weed, abundant in the tropics. 

 Amate. See Ficus crassiuscula. 

 Andira excelsa H. B. K. (?)' Gtjacamayo. Fabaceae. 



A tree up to 30 meters high and 0.5 meter in diameter. The wood is used for 

 furniture and for building. 

 Andira inermis H. B. K. Chapeeno. Fabaceae. 



The heart wood of this tree is very dark and takes a good polish. 

 Andropogon leucostachys H. B. K. Cola de venado. Poaceae. 



A grass with a plumy inflorescence. 

 Annona glabra L. Anonillo. Annonaceae. 



Anoda hastata Cav. Malvavisco. Malvaceae. 



An herb with angled leaves, reddish along the midrib, and magenta flowers. 

 The plant is used to make a wash for venereal diseases. 

 Anon de montana. See Cymbopetalum sp. 

 Anonillo. See Annona glabra. 



Ardisia sp. Camaco. Mybsinaceae. 



Aristolochia gigas Lindl. Alcateaz. Chumpa. Abistolochiaceae. 



A twiner with large sac-shaped lurid maroon flowers, the lower lip provided 

 with a slender tail six inches long or more. 

 Arrayan. See Myrica mexicana. 



Aspidosperma megalocarpon Muell. Arg. FustXn de vieja. Apocynaceae. 

 Astronium (?) sp. Cieuelo. Palo obeeo. Rone6n. Anacabdiaceae. 



A tree up to 35 meters high and a meter thick. The trunks are used for house 

 posts. 

 Baccharis rhexioides H. B. K. Babba fina. Astebaceae. 



A leaning shrub, with small white downy pistillate flower heads. 

 Bactris sp. Huizcoyol. Phoenicaceae. 



A slender palm about 5 meters high, with a very spiny stem, and leaves about 

 1.5 meters long. The fruit is said to be violet and edible. 

 Balsa. See Ochroma bicolor. 

 Baltimora recta L. Mieasol. Astebaceae. 



A small weedy yellow composite. The name nHrasol is used in Latin American 

 countries for many different yellow-flowered composites. 

 Barajo. See Cassia alata. 

 Barba fina. See Baccharis rhexioides. 



5 Pittier, Journ. Washington Acad. Sci. 9 : 431-438. 1919. 



• In a few cases the specific identity of the specimens collected by the expedi- 

 tion is in doubt, owing to the imperfect condition of the material preserved. 

 This is indicated in the list by the addition of a mark of interrogation to the 

 scientific name. 



