ENUMERATION OF CONIFERS 



225 



Juvenile forms : Var. Ellwangeriana, Beiss. ( var. Tom Thumb) . Tom Thumb 

 A. Plate XXI. A low broad pyramid, with slender branches clothed with two 

 kinds of foliage, adult leaves and primordial, acicular, spreading leaves; it 

 is an intermediate form between the var. ericoides and the type. Var. "Ell- 

 wangeriana aurea," Spaeth. Like the preceding but with yellow foliage. 

 Var. ericoides, Beiss. & Hochst. {Retinospora dubia, Carr. R. ericoides, Hort., 

 not Zucc). Heath Retinispora. Dwarf, globose or broadly pyramidal 

 form, with slender branchlets clothed with needle-shaped, soft, spreading 

 leaves, dull green above, grayish-green beneath and assuming a brownish 

 tint in winter. 



2. T. plicata, D. Don {T. gigantea, Nutt. T. Menziesii, Douglas. T. Lobbii, 

 Hort.). Giant A. Tall tree attaining 200 feet, with short horizontal branches 

 often pendulous at the ends, forming a narrow pyramid; trunk with a much- 

 buttressed base and clothed with cinnamon- 

 red bark; branchlets slender, regularly and 

 closely set: leaves bright green and glossy 

 above, dark green beneath and with whitish 

 triangular spots: leaves of vigorous shoots 

 widely spaced, ending in long points parallel 

 to axis of the lateral branchlets, acute and 



47. Lower foliage of Thuja 

 occidentalis var. Ohlendorffi. 



48. Upper foliage of Thuja occidentalis, 

 var. Ohlendorffi. 



