^CTANDRIA. MONOGTNrA. 253 



naropean tnapKa. 3. barbatnm. 4- sac char Irr.im. (Sugar- 

 maple.) 5. nigrum. Scarcely distinct from the preceding-. 

 Confined almost exclusively to the west side of the moun- 

 tains. 6. macrop/u.-Uum, l*H. t.'s. Somev/hat resembling' ^f. 

 I'jsendoplatanits. 7- circinuUim, Ph. Both indigenous to 

 ^urthCalifor.u!, on Columbia river. 8. striatum. Persoon 

 I. p. 417. Pursh, 1. p. 267. Obs. Racemes pendulous! 

 Calix 5-cleft, pe'als 5, oblong; stamina 8, anthers pale, 

 oval, small. Tiiis is certainly a correct type of the genus, 

 as well as the following. 9. in'mtanum. 



Neguxdo. Dioicous. — Calix minute, 54oothed. Pe- 

 tals none. Male, with 5 stamina, anthers linear, sessile, 

 and acuminate. Summ\e similar to Acer. 



A tree, with pseudoternate or imperfectly biternated 

 leaves (something like those of Fraxinus), racemes aggre- 

 gated, filiform. 



lO.*Fraxinifoliinn. 11 ab. North-westward on the banks 

 of the Missouri to the mountains? 



Of this genus there are 5 species on the continent of Eu- 

 rope, 1 in the isle of Crete, which is evergreen, witii leaves 

 like AnemoJie h&paiica, 1 in Tartary, and 6 in Japan. 



SGr. DIRCA. L, (Leather-wood.) 



Calix none. Corolla tiibukxjs, border obso- 

 lete. Stamina unequal, exsertcd. Style filiform. 

 Berry l -seeded. 



A low shrub, virgately branched; baik tenaceous; buds 

 3-flowered, axillary; flowers small, pale yellow. 



Species, 1. D. palustris. Tiie only species of the 

 genus. 



363. JSFFERSONIA. Barton, 



Calix 5-leaved, coloured, dt'cidaous. Corolla 

 of 8 petals, incufvately fipfea-lin;^. Stamina re- 

 ccptacular. Capsule obovate, substipltate, i-cel- 

 led. opMiing below the summit by a lunate fora- 

 men. Seeds many, oblong, aiillate at the base. 



Stemless; leaves binate; scnpes n.ikcd, 1- flowered; flow- 

 er^ caducous, white. Naiural oriler Papax^eracece. 



SpEcres. 1. J. diphtjUa. Tueo-ily species of the genus. 



