226 



ON SEEDLINGS 



flattened, about 5-6 mm. long ; testa membranous, smooth, brownish, 

 slightly winged at the edges and thickened near the hilum, comose ; 

 hilum rather conspicuous. 



Endosperm surrounding the embryo, whitish-grey, and rather 

 copious. 



Embryo straight, embedded in the endosperm, yellowish-white ; 

 cotyledons broadly oblong, obtuse, entire, sessile, plano-convex, 

 lying face to face in the broad way of the seed with their edges 

 to the axis ; radicle considerably shorter than the cotyledons. 

 In two out of three seeds there were two embryos, the cotyledons 

 lying obliquely in the broad way of the 



Seedling. 



Hypocotyl erect, terete, covered with 

 minute hairs, l-2'5 cm. long, brownish- 

 green. 



Cotyledons ovate, subacute, entire, 

 shortly petiolate, covered with minute 

 hairs, dark green, pinnatinerved like the 



FIG. 516. Microloma sp. 

 One-third over nat. size. 



Stem erect, terete, herbaceous, ulti- 

 mately woody, covered with minute hairs ; 

 1st internode 1-1'5 cm. long ; 2nd 

 1-1-2 cm. 



First leaves simple, entire, eauline, 

 opposite, decussate, ovate-elliptic, acute, 

 shortly petiolate, exstipulate, ciliate, 

 covered with minute hairs, dark green, 

 pinnatinerved. 



Microloma sp. (fig. 516). 



Hypocotyl erect, terete, very short, almost colourless. 



Cotyledons oblong, obtuse, with long petioles, glabrous with a few 

 alternate, ascending nerves, two of the larger of which curve round 

 or inwards to the midrib near the apex, deep green ; lamina 9- 

 10 mm. long, 3'5-4 mm. wide ; petiole semiterete, slender, slightly 

 channelled above, about 1'85 cm. long. 



Stem erect, terete, pale green, pubescent, ultimately twining 

 and subshrubby ; 1st internode 5 mm. long ; 2nd 8'5 mm. ; 3rd 

 1-1 cm. ; 4th 1-6 cm. 



Leaves simple, entire eauline opposite, exstipulate, with short 



