Class XXIII. Order I. 379 



is sufficiently inspissated to crystallize or grain. It thus form* 

 the raw sugar, which may be purified in the usual way. 



ACER DASYCARPUM. Willd. White Maple. 



Leaves palmate-five lobecl, truncated at base, une- 

 qually cut toothed, white and smooth underneath, with 

 obtuse sinuses ; flowers crowded, with short pedicels 

 and downy germs. 



Sljll. JicER ER10CARPUM. MX. 



A tall tree with large leaves remarkably white underneath. 

 Wings of the fruit very large, exceeding those of any species here 

 mentioned, greenish. Wood softer and more perishable than in 

 the others kinds. Hanover, New-Hampshire, and Maine. 



ACER STRIATUM. L. Striped Maple. Moose Wood. 



Leaves rounded at base, with three acuminate lobes, 



sharply serrate, smooth ; racemes simple, pendulous. 



Syn. ACER PENHSTLYANICUM. Willd. 



A beautiful small tree with striped bark. Leaves more sim- 

 ple in their structure than those of the other species, being sim- 

 ply three lobed. Flowers yellowish green, in simple pendulous 

 racemes. Petals from eight to ten, obtuse. Stamens about eight. 

 Fruit in long hanging clusters with pale greenish wings. Com- 

 mon in Worcester county. June. 



ACER MONTANUM. L. Mountain Maple. 



Leaves about five lobed, acute, toothed, pubescent 

 underneath ; racemes erect, compound. 



A shrub with pale greyish bark. Leaves three or five lobed, 

 toothed, rugose, slightly pubescent underneath. Racemes erect 

 with compound branches. Calyx segments short, acute. Petals 

 five, linear, greenish white. Stamens shorter than the petals ; 

 anthers yellow. Germ compressed, inversely heart shaped or 

 triangular. Style erect. Fruit winged, in compound, pendulous 

 racemes. Woods in the interior of Massachusetts &c. June. 



