CONIFERS 



275 



(ii) Seedling and cotyledons very slender. 

 Pinus Strobus. Weymouth Pine (Fig. 147). 

 With P. Strobus comes P. excelsa. 



Fig. 146. Pinu* Cembra, 

 Arolla Pine, -i (E.D.). 



Fig. 147. Pinus Strobus, 

 Weymouth Pine, f (E.D.). 



II. EMBRYO AND SEEDLING WITH 2 COTYLEDONS 

 ONLY. 



(Abnormal specimens of Acer, Berberis, &c. may 

 have 3.) 



A. GERMINATION EPIGEAL. [For (B) 



see p. 293.] 



(1) Cotyledons elongated and very narrow, [For (2) 

 linear, &c. Gymnosperms. see p. 276. 



(a) Primary leaves spirally inserted. 

 Taxus baccata. Yew (Figs. 148, 149). 



(b) Primary leaves opposite or in whorls of 4. 

 (i) Cotyledons 15 16 mm. long. 



(a) Plumule developing into a 4-angular shoot 



with scaly leaves. 



Cupressus sempervirens. Roman Cypress (Fig. 150). 

 (/3) Plumule developing into a shoot bearing 

 subulate leaves in whorls. 



182 



