GERMINATION OF TREES AND SHRUBS 



337 



acute, entire, pubescent on upper surface with scattered hairs. 

 First pair of leaves distinctly purplish, no stipules, simple, slen- 

 der, acute, colorless, surface of hairs roughened. 



OLEACE^. 



Lubbock^^ describes seedlings of Fraxinus excelsior L. 



Fraxinus pennsylvanica var. lanceolata (Borkh) Sarg. Green 



Fig. 117 Ftg-. Hi 



Fig. 119 Fig. 120 



Fig. 117. — Coifiiis altemifolia. 1, Cotyledons; 2, Cotyledons and plumule 

 expanded. Drawn by C. M. King. 



Fig. 118. — Trichomes from leaf of Fraxinus pennsylvanica var. lanceolata. 

 Drawn by C. M. King. 



Fig. 119. — Frascinus pennsylvanica var. lanceolata seedling. Drawn by 

 C. M. King. 



Fig. 120. — Fraxinus pennsylvanica var. lanceolata. 1, trichomes from 

 lower leaf ; 2, single trichome. Drawn by C. M. King. 



Ash. Seeds gathered in fall of 1917, stratified out of doors, 

 transferred to greenhouse INfarch 14, 1918. Germinated April 

 15. Total germination 10 per cent. Germination epigaeous; 

 siraight tap root with many rootlets; hypocotyl reddish; coty- 



^'A contribution to our knowledge of seedlings, 2, pp. 21.3-215. 



22 



