674 



DIOECIA DIANDRIA. 



mulisque tomentosis 

 floribus calyculatis. 



J 



oles and young branch- 

 es tomentose; flowers 

 calyculate. 



Sp. pi. 4. p. 1 103. Walt. p. 254. Pursh, 1. p. 9. Nutt. 2. p. 231. 

 F. Tomentosa, Mich. arb. for. 3. p. 112. 



A tree 50—60 feet highj and generally from 1 — 2 in diameter. "Leaves 

 opposite, unequally pinnate. Leaflets 3 or 4 pair, ovate-lanceolate, acumi- 

 nate with a long summit, serrate, pubescent or tomentose underneath; on pe- 

 tioles 2 — 3 lines long. Wing of the fruit oblong-lanceolate, slightly emargi- 

 nate, extending nearly to its base. . - 



Grows in swamps and damp rich soils. 



Flowers March — April. 



6. Triptera. 



Nutt. 



F. foliolis obovatis, I Leaflets obov te, 

 inlegerrimis, subsessi- entire, nearly sessile, 

 libus, subtus tomento- tomentose underneath, 

 sis,basiobIiquis,fructi- oblique at base; fruit 



bus latioribus, obovatis 

 plerumque trialatis, ba 

 si attenuatis. 



y 



I 



broad, obovate, gene 

 rally 3-winged, taper- 

 ing at base. 



Nutt. 2. p. 232. 



Points of the leaves obtuse, the underside 'paler and softly villous, the 

 common petiole and nerves beneath smooth. Fruit, at first sight, almost 

 similar to Halesiaj more frequently 3 than 2 wingedj the seed ako 3-sjded. 



Nuttall. 



Flowers 



oak 



Nutt. 



BORYA. Willd. 



MasculL 



Calyx 4- 

 phyllds. Corolla 0. 



Stamina 2 



3. 



Sterile Jlorets 

 li/x 4-leaved. 



Ca- 

 Carol- 



aO, 



Stamens 2 



Fertile Jlorets 



FoemineL Calyx 4- 

 phyllus, inaequalis. C<?- 



rolla 0. Stigma capi- 1 Corolla 0. 



3. 



Ca 



lyx 4-leaved, unequal. 



Stigma 



# 



