RIBES ^^2 



thorns, the nodal spines about the length of the internodal; twigs 

 and buds glossy straw-colored. Cold damp woods, Newfoundland 

 to Alaska, south in the eastern mountains to Tennessee, in the 

 west to Colorado, Utah, and California (Fig. 117). 



6. R. glandulosum Grauer. Skunk Currant. (R. prostratum 

 L'Her. ). A decumbent or spreading very ill-scented shrub; bark 

 blackish; twigs unarmed, glabrate. Wet woods, Labrador to Mac- 

 kenzie and British Columbia, south to North Carolina, Michigan 

 and Saskatchewan (Fig. 118). 



7. R^ triste P all. Red Currant. Straggling or reclining shrub, 

 the branches often freely rooting; twigs quickly glabrate. Cool 

 woods and swamps, Labrador to Alaska, south to Pennsylvania, 

 Michigan, Minnesota, and Oregon (Fig. 119). 



8. R^ americanum Mill. Wild Black Currant . An erect un- 

 armed shrub 1. 5 m. or less high, with spreading branches ;buds 

 ovoid; bud-scales and twigs glabrate, bearing large conspicuous 

 resin-glands; leaf-scars broad. Rich slopes. New Brunswick to 

 Alberta, south to Virginia, Missouri, and New Mexico (Fig. 120). 



HAMAMELIS L. (Hamamelidaceae) 



Deciduous shrubs or small trees. Twigs rounded, zigzag, 

 slender, stellate-tomentose to glabrate; pith small, round, green, 

 continuous. Buds moderate, stalked, oblong, tomentose. Leaf- 

 scars alternate, 2-ranked, half-round or 3-lobed; bundle-traces 

 3, often compound; stipule-scars unequal, one round, the other 

 elongated. The leaves have a curious double abscission layer, the 

 petioles falling normally in autumn and the surface of the leaf- scar 

 again abscissing in spring. 



1. H^ vlrginiana L. Witch-hazel. A shrub or small tree 5-8 

 m. high, the stems 10-25 cm. in diameter; buds sordid-yellow, 

 5-8 mm. long, including the stalk. The yellow flowers appear in 

 autumn and the obovoid-pubescent capsules, 1-1. 5 cm. long, ma- 

 ture a year later. Woods, Quebec to Minnesota, south to Georgia 

 and Louisiana (Fig. 121). 



LIQUIDAMBAR L, (Hamamelidaceae) 



Conical deciduous trees, with a resinous sap. Twigs moderate, 

 terete and smooth or with variously developed corky ridges; pith 

 angled, continuous or nearly so, white or brownish. Buds solitary, 

 ovoid, with about 6 exposed scales. Leaf-scars alternate, ellipti- 

 cal or triangular; bundle-traces 3, large; stipule-scars none. 



