390 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Vera Cruz: Orizaba 1855, Milller 1245 and 1370. 



Tamaulipas: Vicinity of Victoria, alt. 320 meters, February to April, 1907, 



Palmer 137. 

 Michoacan or Guerrero: Rives du Rio Coyaquilla, alt. 150 meters, February 6, 



1899, Langlasse 833. 

 Mexico: Valle de C6rdoba, 1866, Bourgeau 2063. 



Oaxaca: Tuchitan, January 30, 1896, Caec. & Ed. Seler 1980; Cuicatlan, Febru- 

 ary 2, 1895, L. C. Smith 503; Oaxaca, 1896, Caec. & Ed. Seler 1620. 

 Colima: Colima, January and February, 1891, Palmer 1114; Acapulco, 1894-5, 



Palmer 404. 

 Sinaloa: Along tbe edge of sand dunes north of Mazatlan, April 4, 1910, Rose, 

 Standley & Russell 14000; thickets along the river, Guadalupe, April 18, 

 1910, Rose, Standley & Russell 14779. 

 Tepic: Moist arroyo near Acaponeta, April 10, 1910, Rose, Standley & Russell 

 14318; south of Acaponeta, April 11, 1910, Rose, Standley <fr Russell 14416; 

 San Bias, 1897, Maltby 28. 

 Jalisco: Roadside between San Sebastian and Las Palmas, alt. 150 to 750 meters, 



March 30, 1897, Nelson 4128. 

 Costa Rica: Nicoya, 1896, Cooper 10384; forets de Shirores, Talamanca, alt. 100 



meters, February, 1895, Tonduz 9181. 

 Guatemala: Panzal, Baja Verapaz, 1907, Tuerckheim 1710. 

 Honduras: Rio Permejo, Santa Barbara, 1887, Thieme 5425. 

 The following specimens are noteworthy because of their leaves, which are densely 

 pubescent beneath while usually very broad and obtuse; the young branches, too, 

 are strongly pubescent: 



Oaxaca: Roadside between Llano Grande and Pinotepa, alt. 60 to 150 meters, 



February 19, 1895, Nelson 2342. 

 Guerrero: El Limon, April 3, 1903, Nelson 6980. 

 Mexico: Valle de Cordoba, March 14, 1866, Bourgeau 2063. 



Sinaloa: Road from Las Flechas to La Rostra, February 22, 1899, Goldman 320. 

 Guatemala: Naranjo, Depart. Escuintla, alt. 90 meters, March, 1892, /. D. Smith 

 2761. 

 Of all the species of Pisonia no other has so wide a range as this. In Mexico and 

 Central America it is common in the warmer parts, usually occurring near the sea or 

 along moist river bottoms. It is found in Florida, in most of the islands of the West 

 Indies, in South America, in southern Asia, in the Philippine Islands, and in other 

 islands of the Pacific. In some of these places it is thought to be introduced; espe- 

 cially is this probable in the case of the Philippines. Chance introduction is easy, for 

 the viscid fruits attach themselves so readily to any object which touches them that 

 they may easily be transported, either upon the bodies of animals or in packing or 

 grain. The glands of the fruit maintain their viscidity for a long time, the fruit in 

 some of the herbarium specimens collected fifty years ago being still viscid to the 

 touch. 



Coupled with the wide geographic range of the species is found, as is to be expected, 

 great individual variation among the plants. The whole range of variation, perhaps 1 

 is to be found among our Mexican specimens. Plants from other parts of the world 

 are comparatively uniform, having commonly glabrous, somewhat fleshy, acute leaves. 

 The Mexican specimens, however, exhibit peculiarities in the form and pubescence 

 of the leaves as well as in the abundance and size of the fruit. So imperceptibly do 

 the forms shade into each other that there seems to be no reliable means of separating 

 them. Most of the strongly pubescent specimens that have been examined represent 

 young growths and would probably become glabrous with age. 



Various common names are applied to this species. In Michoacan and Guerrero it 

 is known as garabato prieto or ufia del diablo; in Tamaulipas as coma de ufta; in Tabasco 



