86 HAMAMELIDACEAE. 



. 6. Fruit bristly. R. Grossularia. 



Fruit neither bristly nor prickly. R. oxyacanthoides. 



7. Petiole shorter than blade : buds glabrous. R. alpinum. 



Petiole longer than blade : buds, pubescent. R. vulgare. 



Family HAMAMELIDACEAE. Witch Hazel Family. 

 A small family including such trees as Liquidambar, which 

 yields the valuable sweet-gum lumber; chiefly shrubs. 



CORYLOPSIS. 



Deciduous 'shrubs with slender or moderate rounded zig-zag 

 twigs ; roundish homogeneous pale pith ; alternate 2-ranked 

 somewhat raised crescent-shaped leaf-scars with 3 separated or 

 transversely aggregated bundle-traces ; elongated stipule-scars ; 

 large scaly buds ; rather large ovate stalked bristly-toothed, sub- 

 palmately nerved leaves ; racemed perfect polypetalous yellow 

 flowers appearing before the leaves ; and partly inferior dry fruit. 

 Flowers 2 or 3 in a raceme. C. pauciflora. 



Flowers about 8 in a raceme. C. spicata. 



HAMAMELIS. Witch Hazel. 



Deciduous shrubs with rather slender rounded somewhat 

 zig-zag twigs ; somewhat angular homogeneous pale pith ; alter- 

 nate 2-ranked somewhat raised crescent-shaped or half-round 

 leaf-scars with I aggregate bundle-trace ; triangular stipule- 

 scars ; frequently superposed buds, naked or the lateral stalked 

 or quickly developing into small clusters of globose flower-buds ; 

 rather large roundish stalked crenate subpalmately nerved 

 leaves ; small lateral clusters of perfect flowers with long fringe- 

 like distinct yellow petals ; and ovoid small hard fruits, 2-lobed 

 with notched valves, above the adherent calyx-rim. 



1. Leaves tomentose beneath. H. mollis. 

 Leaves not tomentose, 2. 



2. Flowering in autumn, with ripe fruits. H. virginiana. 

 Flowering in winter or spring. 3. 



3. Calyx attached to the lower half of fruit. H. vernalis. 

 Calyx attached to the lower third of fruit. H. japonica. 



