354 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



2. Neptunia plena (L. ) Benlh. in Hook. .Tourn. Bot. 4: 355. 1842. 



iMinio.sa plena I.. Sp. PI. 519. 1753. 



Baja (,'alifoniiu and Sinuloa to ('hiapas. Widely distributed in tropical 

 Anierica. 



Low slirub or often hei'baceous ; pinnae 3 to 5 pairs, the leaflets 5 to 8 mm. 

 long; flowers yellow, capitate, the heads long-pedunculate; fruit 3 to 4.5 cm. 

 long. 



4. PIPTADENIA Benth. in Hook. Jouru. Bot. 4: 334. 1842. 



Erect or scandent shrubs or trees, armed or unarmed ; leaves bipinnate, the 

 leaflets few or numerous ; flowers small, spicate. 



Piptadenia ccbil Griseb. of Argentina is valued as a source of tanbark. P. 

 riglda Benth. of Brazil furnishes Angico gum, which reseml)les gum arable. 

 From tiie seeds of P. peregrina (L.) Benth., a species occurring in the West 

 Indies and South America, the natives prepared a narcotic snuff known in the 

 West Indies as " cohoba." ^ That species is known in Porto Rico as " cojoba," 

 " cojobana," " cojobo," and " cojobillo." 



Leaflets linear, about 1 mm. wide; fruit not constricted 1. P. flava. 



Leaflets oval or rhombic, 3 to 10 mm. wide; fruit constricted between the seeds. 



2. P. constricta. 



1. Piptadenia flava (Spreng.) Benth. Trans. Linn. Soc. Bot. 30: 371. 1875. 

 Acacia flava Spreng. Syst. Veg. 3: 141. 1826. 



Piptadenia leptocarpa Rose, Contr. U. S. Nat. Herb. 1: 325. 1895. 



Miiiiosd huccragcnla Robinson, Proc. Amer. Acad. 43: 23. 1907. 



Jalisco to Guerrero. Central America and northern Sonlli America; type 

 from Colombia. 



Erect shrub, 3 to 5 meters high; leaflets 4 to 7 umi. long, glabrous; flowers 

 yellowish green ; fruit flat, 3 to 8 cm. long, about 1.5 cm. wide, glabrous. 



2. Piptadenia constricta (Mich. cV: Rose) l\Iacbiide. Contr. Gray Herb. n. ser. 



59: 18. 1919. 

 Goldmonnia constricta Mich. & Rose, Mem. Soc. Phys. Hist. Nat. Geneve 34: 



274. pi. 20. 1903. 

 Sinaloa to Guerrero ; type from Acapulco, Guerrero. 

 Tree, 10 to 12 meters high, unarmed or with short stout spines ; pinnae about 



5 pairs, the leaflets rhombic, 6 to 17 ram. long; fruit .10 to 15 cm. long, about 



6 nim. wide, very deeply constricted between the seeds. 



5. GOLDMANIA Rose; Michel i, M^m. Soc. Phys. Hist. Nat. 



Geneve 34: 274. 1903. 

 1. Goldmania foetida (Jacq.) Standi. 



Miiiiom foetida Jacq. PI. Hort. Schiinbr. 3: 73. pi. 390. 1798. 



Piptadenia foetida Benth. Trans. Linn. Soc. Bot. 30: 36G. 1875. 



Goldnianiu pUitycarpa Rose; Micheli, Mtoi. Soc. Phys. Hist. Nat. Geneve 34: 

 274. 1903. 



Piptadenia ptdtiiearpa Macbride, Contr. Gray Herb. n. ser. 59: IS. 1919. 



Sinaloa to Puebla ; described from cultivated plants whose origin was 

 (loubtful. 



Tree, sometimes 12 meters high, or only a shrub, \inarmed; leaflets suborbicu- 

 lar to cuneate-obovate, 1 to 3 cm. long, nearly glabrous ; flowers yellowish green, 

 spicate. ill-sceiit»Hl ; fruit short, 1 to 15 cm. wide, curved, leddisli brown, rough. 



' See W. E. Safford, Narcc^ic plants and stimulants of the ancient Americans, 

 Ann. Rep. Smiths. Inst. 1916: 387-424. pi. 1-17, f. 1-6. 1917. 



