236 LIME: HAZEL 



and, like the shoots, pubescent in youth, becoming glabrous. 

 Autumn leaves yellow or yellowish brown. 



Venation pinnate, pseudo-palmate at the base; the 

 basal principal veins on each side of the midrib strong, 

 diverging at the junction with the petiole and running 

 nearly straight to the margin, emitting outer lateral 

 branches as they go. At the margin they break up and 

 send tertiaries into the teeth : the secondaries end simi- 

 larly, and are numerous. The lateral basals send strong 

 branches from their outer sides, which end similarly. 

 Tertiaries strong and numerous, forming distinct cross-ties 

 and a very evident reticulation of close meshes. Tufts of 

 hairs in the axils of the veins below. 



Several varieties are described, of which the most 

 important are T. grandifolia, with larger leaves (4 10 x 

 4 9 cm.), velvety beneath and with the hairs in the 

 angles of the veins whitish ; teeth unequal, sharply 

 pointed ; and T. parvifolia, with small leaves (4 7 

 x 2 7 cm.) and relatively longer petioles (2 3 cm.) ; 

 glabrous except for the tufts of reddish-yellow hairs in 

 the angles of the veins beneath. 



tt Leaves not typically heart-shaped, more 

 ovate or obovate, and bi-serrate ; venation 

 strictly pinnate all the way up. 



Shoots, petioles, and midrib with reddish, 

 capitate glandular hairs; young leaves 

 conduplicate. Stipules persistent. 



Corylus Avellana, L. Hazel (Fig. 84). Shrub with 

 glandular shoots, and persistent stipules. Leaves broadly 

 oval to obovate or sub-orbicular, 6 12 cm. or more long 

 and two-thirds as broad (7 13 x 6 10), slightly cordate 

 and oblique at the base, suddenly acuminate or cuspidate, 

 and occasionally (on suckers) feebly trilobate at the apex ; 



