702 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM- 



Fruit winged. 



Inflorescences glomerate in the axils ; leaflets acuminate or long-acuminate. 



1. P. glomerulosa. 



Inflorescence solitary ; leaflets mostly obtuse 2. P. fuscescens. 



Fruit not winged. 



Me.socarp of the fruit much thickened, fibrous-spongy. 



Leaflets 3 ; 3. P. cururu. 



Leaflets 5 to 7. 



Stems composed of a central woody body and of l to 3 smaller outer ones. 



4. P. pinnata. 

 Stems of a single central woody body, without separate outer ones. 



Flowers pedicellate; leaf rachis narrowly winged 5. P. clavigera. 



Flowers sessile ; rachis broadly winged 6. P. sessiliflora. 



Mesocarp of the fruit thin, not spongy-thickened. 



Capsule sessile or subsessile 7. P. tomentosa. 



Capsule stipitate. 



Leaves pinnate, the leaflets entire 8. P. costata. 



Leaves biternate, or the leaflets lobed or parted. 



Leaves biternate ; leaflets mostly 3 to 8 cm. long 9. P. costaricensis. 



Ivcaves various, the lower ones merely ternate or trisect, the upper ones 

 pinnate; leaflets mostly 1 to 2 cm. long 10. P. sonorensis. 



1. Paullinia glonierulosa Radik. Abh. Akad. Wiss. Miinchen 19: 257. 1896. 

 Reported from Mexico by Radlkofer. Panama and Venezuela. 



Leaves pinnate ; leaflets 2 to 5 pairs, the lowest ones ternate or pinnate, mostly 

 lanceolate, 3 to 6 cm. long, glabrate ; flowers pedicellate ; fruit broadly obovate, 

 sessile, 1 cm. long, glabrate, the wings 2 to 3 mm. wide. 



2. Paullinia fuscescens H. B. K. Nov. Gen. & Sp. 5: 93. 1821. 

 Paullinia velutina DC. Prodr. 1: 605. 1824. 



Sinaloa to Tamaulipas, Yucatan, Campeche, and Oaxaca. Cuba, Central 

 America, and northern South America ; type from the Amazon River. 



Leaves biternate, the leaflets rhombic or oval to lanceolate, 3 to 7 cm. long, 

 obtusely serrate-dentate, glabrate above, tomentose to glabrate beneath ; in- 

 florescences 5 to 15 cm. long, pedunculate, densely pubescent or glabrate, the 

 flowers white or yellowish ; capsule broadly obovate, 1 to 1.5 cm. long, reddish, 

 pubescent or glabrate. " Kexak " (YucatS^n, Maya); " panoquera " (San Luis 

 Potosf, Veracruz); " bejuco costillon " (Sinaloa); " campalaca " (Honduras) ; 

 "bejuco de mulato " (Venezuela). 



The tough stems are used for binding fences and the framework of huts. 

 This species has been reported from Mexico as P. harbadensis Jacq. 



3. Paullinia cunini L. Syst. Nat. ed. 10. 2: 1007. 1759. 



Reported from Mexico by Radlkofer. West Indies, Central America, and 

 South America. 



Petiole winged ; leaflets elliptic or elliptic-lanceolate, 7 to 15 cm. long, obtuse 

 to acuminate, remotely serrate-dentate, barbate beneath in the axils of the 

 veins but elsewhere glabrous ; flowers white or greenish, pedicellate ; fruit 

 pyriform or clavate, glabrous. " Azucarito " Venezuela); " chilmecate " 

 (Nicaragua). 



4. Paullinia pinnata L. Sp. PI. 866. 1753. 



Guerrero to Oaxaca and Tabasco. West Indies, Central America, South 

 America, and Africa. 



Large vine, nearly glabrous ; leaves pinnate, the leaflets 5, ovate to oblong or 

 lanceolate, 7 to 10 cm. long, usually acute, remotely serrate-dentate, coriaceous; 



