260 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



Fruit without glands. 



Fruit with longitudinal wings; low shruhs 6. SELINOCARPUS. 



Fruit not winged ; trees or large shrubs. 



Stamens included 1. NEEA. 



Stamens exserted 2. TORRUBIA. 



1. NEEA' Kuiz & Pav. Fl. Peruv. Chil. Prodr. 52. 1794. 

 Leaves sometimes verticillate; flowers dioecious; starainate perianth urceo- 

 late, 4 or 5-dentate; stamens 5 to 10; fruit ellipsoid. 



Leaves coriaceous, oi)posite 1. N. choriophylla. 



Leaves membranaceous. 



Leaves mostly 2 to 6 cm. wide; stamens 5 2. N. psychotrioides. 



Leaves less than 2 cm. wide ; stamens 6. 



Leaves partly verticillate, acuminate at apex 3. N. tenuis. 



Leaves opposite, obtuse or acutish 4. N. sphaerantha. 



1. Neea choriophylla Standi. Contr. U. S. Nat. Herb. 13: 384. 1911. 

 Yucatan. 



Leaf blades oval to obovate-oval, 4.5 to 7 cm. long, abruptly acuminate; 

 perianth 3 mm. long. 



2. Neea psychotrioides Donn. Smith, Bot. Gaz. 16: 199. 1891. 



Tabasco and Oaxaca. Guatemala (type from P^seuintla) to Costa Rica. 

 Slender shrub, 2 to 3 meters high ; leaves opposite or verticillate, oblong to 

 elliptic, 8 to 15 cm. long, glabrous ; perianth 4 to 8 mm. long. 



3. Neea tenuis Standi. Contr. U. S. Nat. Herb. 13: 384. pZ. 74. 1911. 

 Known only from the type locality, Orizaba, Veracruz. 



Leaf blades elIiptic-obl«ng or lance-elliptic, 4.4 to 5 cm. long; perianth 3 to 

 4 mm. long. 



4. Neea sphaerantha Standi. Contr. U. S. Nat. Herb. 13: 384. 1911. 

 Known only from the type locality, Izamal, Yucatan. 



Leaves oblong or oval, 1 to 2 cm. wide, glabrous; perianth 4 to 5 mm. long. 



2. TORRUBIA Veil. Fl. Fium. 139. 1827. 

 Shrubs or small trees ; flowers small, dioecious ; fruit small, drupaceoiis. 



Inflorescence lax, few-flowered; leaf blades oval or oblong-oval 1. T. potosina. 



Inflorescence dense, many-flowered ; leaf blades elliptic 2. T. linearibracteata. 



1. Torrubia potosina Standi. Contr. U. S. Nat. Herb. 18: 99. 1916. 

 Known only from the type locality, Rascon, San Luis Potosf. 

 Leaves 5 to 10.5 cm. long, acute 'or acuminate. 



2. Torrubia linearibracteata (Heimerl) Standi. Contr. U. S. Nat. Herb. 18: 



100. 1916. 

 Pisonia linearihrocteata Heimerl, Report. Sp. Nov. Fedde 12: 221. 1913. 

 YucatSn ; type from Chichen Itzj'i. 

 Leaves 7.5 cm. long and 4.3 cm. wide or smaller. 



3. PISONIA' L. Sp. PI. 1026. 17-53. 

 Flowers small, dioecious, cymose ; fruit 5-sided, puberulent, with stalked 

 glands along the angles. 



' Tlie genus was named in honor of Luis Nee, a Frenclinian by birth but a 

 Spaniard by naturalization, who was an associate of Malaspina on his voyage 

 around the world (1789-1794). He collected chiefly in South America, but 

 also visited Mexico, landing at Acapulco and journeying to the capital, in com- 

 pany with Ilaenke. His collections are at Madrid. 



* Named in honor of Willcm Piso, a Dutch physician and naturalist, who vis- 

 ited Brazil in 1637. 



