STANDLEY TREES AND SHRUBS OF MEXICO. 673 



4. Amphipterygium adstringens (Schleclit.) Schiecle ; Schlecht. Liimaea 17: 

 635. 1S43. 



■Hypopterygium adstringens Schlecht. Linnaea 17: 635. 1843. 



Juliania adstringens Schlecht. Linnaea 17: 746. 1843. 



MichoacS-n to Morelos, Puebla, and Oaxaca ; type from Morelos. 



Tree, 4 to 6 meters high ; leaflets sessile or nearly so, most of them broadly 

 obovate, 2 to 7 cm. long, serrate or crenate above the middle or sometime also 

 below, rounded to cuneate at base ; fruit 2.5 to 5 cm. long, puberulent or glab- 

 rate. " Quetclialalatl " (Michoacan (Lumholtz) ; " cuachalala," " cuauchalalit," 

 " cuauchalalote," " cuauchalalate," " cuauchalalatl " (Nahuatl) ; " matixeran " 

 (MichoacS,n, Tarascan, Liimholtz) ; " volador " (Puebla). 



The bark is astringent an-d contains tannin. Its decoction is used to harden 

 the gums and to cure old wounds, and it is said to be employed also as a 

 remedy for malaria. The bark yields a red dye. This plant has been listed 

 in some Mexican works as Rajania subsarmata. 



4a. Amphipterygium. adstringens simplicifolium Standi., subsp. nov. 



Oaxaca; type from Playa de Salina Cruz, Distrito de Tehuantepec {Conzatti 

 3672; U. S. Nat. Herb. no. 989553). 



Leaves simple, petiolate, the blades oval or rounded-ovate, 4 to 6.5 cm. 

 long, rounded or obtuse at apex, rounded or subcordate at base, coarsely 

 crenate, glabrate above, densely short-pilose beneath ; fruit about 3 cm. long. 



This may be a distinct species, but it is more probably only a leaf form, 

 analogous to the forms of certain species of Rhus and Elaphriuni. Two otiier 

 specimens seen by the writer have simple leaves on some of the branches. 

 The finding of a simple-leaved form in this genus is a matter of considerable 

 interest, for it would seem to indicate a relationship with the Anacardiaceae 

 and Burseraceae, groups to which the genus has been referred by most authors, 

 Hemsley, however, considers the relationship of the family to be rather with 

 the Juglandaceae. 



81. CYRILLACEAE. Cyrilla Family. 



1. CYKILLA L. Mant. PI. 1: 5. 1767. 



1. Cyrilla racemiflora L. Mant. PI. 1: 50. 1767. 

 Cyrilla antillana Michx. Fl. Bor. Amer. 1: 158. 1803, 

 Oaxaca. Southern United States, West Indies, Guianas, and Brazil, 

 Shrub or tree, 2 to 10 meters high, the trunk sometimes 30 cm. in diameter, 

 the branches widely spreading ; bark thin, pale brown, breaking up into large 

 scales ; leaves alternate, leathery, obovate or oblanceolate, 3 to 11 cm. long, 

 obtuse or acute, short-petiolate, entire, glabrous ; flowers, perfect, white or 

 pinkish, in lateral racemes ; sepals 5 ; petals 5, about 3 mm. long, acute ; 

 stamens 5 ; fruit a 2-celIed capsule, about 2.5 mm. in diameter ; wood heavy 

 and hard but weak, reddish brown, close-grained, its specific gravity about 0.68. 

 The names used in the United States and the British West Indies are 

 " leather-wood," " ironwood," " burnwood," " red titi," and " white titi." This 

 family has not been reported previously from Mexico or Central America. 

 The occurrence of the species in Oaxaca is rather remarkable, but it Is prob- 

 able that it will be found also in Veracruz. The Mexican plant is the form 

 named by Michaux C. antillana. That is considered a distinct species by some 

 authors, but Urban, correctly as it seems to the present writer, treats It as 

 a synonym of C. racemiflora. 



82. AftUIFOLIACEAE. Holly Family. 



Refeeence : Loesener, Monographia Aquifoliacearum, Nov, Act, Acad, Caes, 

 Leop. Carol. 78. 1901; 89: 1-314, 1908, 

 7808—23 11 



