270 TREES AND SHRUBS. 



from JBmmbu discolor is in the color of the seeds, which are of the usual color of Horsechestnut seeds, while those of 

 Msculus discolor are light orange-brown and unlike those of any other species. 



i KEY TO THE SPECIES OF MSCULUS OF THE SECTION PA VIA Peksoon. 

 Subsection Octandk^, ». subsecL Calyx campanula, margins of the petals eiliate, eglandular ; flowers usually yellow. 

 Petals unequal, longer than the stamens ; fruit smooth. 

 Flowers yellow. 



Leaflets from 5 to 7, cuneate at the base, green and glabrous or pale or rusty pubescent below, short-petiolulate; 



pistils villose only at the base; a tree. M. octandra. 



Leaflets 5, often rounded at the base, glabrous and glaucescent below, their petiolules up to 1.4 cm. in length; 

 pistils conspicuously villose to the apex; a low shrub. iE. glaucescens. 



Flowers red and yellow; leaflets 5, glabrous, green and lustrous below, or pubescent b<^™ • 



Petals nearly equal, shorter than the stamens, fruit tuberculate; flowers yellow. 



Leaflets from 5 to 7, usually 5, elliptical or obovate, glabrous below ; a tree 

 Leaflets from 7 to 9, usually 9, lanceolate or rarely obovate-lanceolate, mon 



Subsection Eupavle, n. subsect. Calyx tubular, margins of the petals glandular, without hairs 

 Seeds dark chestnut brown. 



Leaflets oblong-obovate, glabrous, often furnished below with 



Leaflets lanceolate to oblanceolate, densely pubescent t 

 Seeds light yellow-brown ; flowers red and yellow or red in 



EXPLANATION OF THE PLATE. 

 Plate CC. iEscuLUS splendens. 



1. A flowering branch, natural size. 



2. Vertical section of a flower, natural size 



3. A lateral petal, enlarged. 



4. A superior petal, enlarged. 



5. A stamen, enlarged. 



6. A pistil, enlarged. 



7. A fruit, natural size. 



8. A seed, natural size. 



