520 



ON SEEDLINGS 



and angled, sometimes slightly winged, glabrous, pale brown ; testa 

 thicker than the tegmen, subcrustaceous when dry, cortical ulteriorly ; 

 tegmen thin, membranous, pale brown, closely applied to the endo- 

 sperm ; hilum and micropyle basal, contiguous. 



Endosperm moderately copious, fleshy, colourless when moist. 



Embryo large, straight and axile, embedded in the endosperm, 

 and falling a little short of it in length and breadth, colourless ; 

 cotyledons oblong-ovate, very obtuse, rounded at the base, entire, 

 plano-convex, lying in the broader plane of the seed with their backs 

 to the placenta if the seed is pendulous, but with the radicle pointing 

 in that direction if the seed is horizontal, with a distinct midrib and 



PIG. 334. Bhodol<eia Championi, x 7. A, longitudinal section of seed. 

 B, transverse section of same: OT, testa; IT, tegmen; C, cotyle- 

 don ; B, radicle ; P, endosperm , W, wing. 



a few alternate ascending lateral nerves ; radicle oblong or cylin- 

 drical, obtuse, several times shorter than the cotyledons, imbedded 

 in endosperm close to the micropyle. 



Bucklandia populnea, R. Br. (fig. 335). 



Hypocotyl woody, erect, terete, pubescent or covered with short, 

 fleshy, hyaline hairs, 8 mm. above the soil. 



Cotyledons oblong, obtuse, entire or minutely emarginate, petio- 

 late, coriaceous, glabrous, deep green above, purplish-red beneath ; 

 lamina T25 cm. long, 6'5 mm. wide ; petiole flattened above, 

 pubescent like the hypocotyl, 3 mm. long. 



Stem woody, erect, terete, purplish, densely covered with brown 

 hairs ; first internode T15 cm. long. 



Leaves simple, entire, cauline, alternate, stipulate, petiolate, 



