CONIFERiE 



275 



(ii) Seedling and cotyledons very slender. 



Pinus Strobus. Weymouth Pine (Fig. 147). 

 With P. Strobus comes P. excelsa. 



Fig. 146. Pinun Cembra, 

 Arolla Pine, | (E.D.). 



Fig. 147. Pimis Strobus, 

 Weymouth Pine, | (E.D.). 



II. EMBRYO AND SEEDLING WITH 2 COTYLEDONS 

 ONLY. 



(Abnormal specimens of Acer, Berber-is, &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 lo — 16 mm. long. 



(a) Plumule developing into a 4i-angular shoot 

 tvith scaly leaves. 

 Cupressus sempervirens. Roman Cypress (Fig. 1,50). 



(/3) Plumule developing into a shoot bearing 

 subulate leaves in whorls. 



18—2 



