ROSACEAE 63 



KERRIA. "Corchorus." 



Rather small deciduous shrubs with slender angled green 

 twigs freely branching the first season; rounded homogeneous 

 pale pith; alternate 2-ranked somewhat raised triangular or 

 transverse leaf-scars with 3 bundle-traces; small stipule-scars; 

 solitary sessile ovoid appressed buds with four or five rather 

 loose ciliate scales; simple, doubly toothed moderately large 

 short-stalked leaves; perfect rather large perigynous yellow 

 flowers ending, the branches; and several small akenes in each 

 persistent calyx. 



1. Unvariegated. 2. 

 Variegated. 3. 



2. Flowers single. K. japonica. 

 Flowers double. K. japonica flore-pleno. 



3. Twigs striped with yellow. K. japonica vittato-ramosa. 

 Twigs green. 4. 



4. Leaves striped with yellow. K. japonica aureo-vittata. 

 Leaves edged with white. K. japonica argenteo-variegata. 



EXOCHOHDA. Pearl Bush. 



Deciduous shrubs with exfoliating bark; brownish wood 

 with minute diffused ducts, somewhat more crowded in spring, 

 and fine medullary rays; moderately slender terete twigs; 

 round homogeneous pale pith; alternate slightly raised cres- 

 cent-shaped leaf-scars with 3 bundle- traces ; no stipule scars; 

 oblong ovoid sessile solitary erect buds, with about 8 exposed 

 scales; moderate simple entire or few-toothed rather short- 

 stalked nearly elliptical leaves, whitened beneath; rather 

 large perfect polypetalous perigynous green-centered white 

 flowers clustered at ends of the branches; and small star- 

 shaped bony fruits. 



Fruit depressed, 7-8 mm. long. E. grandiflora. 



Fruit obovoid, 12 mm. long. E. Alberti. 



SlBBALDIA. 



Small matted perennials, woody only at base, with palmate 

 trifoliolate long-petioled basal leaves; small perfect polypeta- 



