3-6 THE BOOK OF EVERGREENS. 



the plant, but when not manifest are latent or dormant, 

 and have the power of breaking-out, as occasion requires. 

 In the Ericoides and Tom Thumb varieties of American 

 Arbor Vitre, the cataphyllary leaves have obtained a marked 

 preponderance, and occasionally, as has been stated, the 

 Tom Thumb endeavors to advance to the euphyllary 

 state, and occasional shoots bear perfectly developed 

 leaves. In a bed of young seedling Thujas, the first sys- 

 tem of leaves will be found to resemble those of the va- 

 rieties Ericoides and Tom Thumb in every particular. 



DOUBTFUL SPECIES OF THUJA. 



T, dlllHOSa, Gordon. We find this plant described as 

 a species in Gordon's Supplement, and as the plant is en- 

 tirely unknown to us, we copy his description : " A spread- 

 ing little bush, densely clothed with numerous, short, 

 tufted, flat, fan-shaped branches, growing in all directions, 

 and thickly set with short, forked, two-edged branchlets 

 of a glossy light-green above, but much paler below, and 

 furnished in the back-rib with an elevated, transparent 

 gland. 



" This kind forms a dense, dwarf, confused bush, seldom 

 growing more than two or three feet high, somewhat re- 

 sembling in its branchlets the Nootka-Sound Arbor Vita3, 



^D I 



(T. 2)l/cata,)-'but of a much lighter color. 



" It is said to be found in the Antarctic regions, and is 

 quite hardy." 



2O. TIIUIOPSIS, Siebold. 



Flowers mono2cious, small, terminal, solitary ; staminate 

 aments, cylindrical. Fertile aments, globular, with the 

 carpellary scales reflexed, and covering at the base five 



