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ON SEEDLINGS 



into the middle segments, and also a strong median nerve ; segments 

 narrowly ovate, obtuse terminal one longest and narrowest ; radicle 

 cylindrical, obtuse, about 2'5-2'75 mm. long. 



Seedling. 



Hypocotyl erect, terete, pubescent or almost glabrous, pale green, 

 or afterwards red, 2-8 to 4-5 cm. long. 



Cotyledons broad, foliaceous, rhomboid and palmately five-lobed, 

 five-nerved at the base, with the outer and lower pair of nerves 

 slender, alternately nerved upwards, reticulate, shining and thinly 

 pubescent on both surfaces, deep green above, paler beneath, petiolate ; 

 lobes oblong, obtuse, with a strong nerve running into each, the basal 

 ones always largest and sometimes ovate, the middle pair of lobes 

 always the smallest and oblong or subulate ; lamina 1-5-2-1 cm. long, 



PIG. 223. Tilia vulgaris. A, seedling, nat. size. B, embryo, x 8. 



1-7-2-5 cm. from tip to tip of the basal pair of lobes ; petiole semi- 

 terete, shallowly channelled above, pubescent, 6-8 mm. long. 



Stem erect, flexuous or bent at each node, densely pubescent ; 

 hairs simple or stellate, pale green, ultimately woody ; 1st internode 

 75-1 mm. long ; second 2-5*5 mm. 



Leaves simple, cauline, alternate, stipulate, petiolate, five- to 



