496 OX SEEDLINGS 



basal side, covered except at the tip with yellow granulose, viscid, 

 highly odorous glands, purplish and finely netted before maturity, 

 afterwards pale brown or grey, sometimes tipped by the two stigmas 

 when nearly mature. 



Seed pendulous from the top of the fruit, subobovoid, slightly 

 compressed, with a ridge containing the radicle running along the 

 side opposite to the raphe, pale brown, smooth, somewhat shining, 

 exalbuminous ; hilum raised and somewhat prominent on one 

 edge of the seed, a deeper brown than the rest ; testa brittle ; 

 tegmen greenish and subfleshy, marked by the coils of the embryo 

 and deeply impressed by the radicle. 



Embryo in the mature seed spirally twisted and occupying the 

 whole interior, fleshy and colourless ; cotyledons incumbent, spirally 

 rolled over one another with their edges towards the edges of the seed 

 and surmounted by the cylindrical, obtuse radicle, linear, obtuse, 

 slightly narrowed to the base, 4*5 mm. long, 1 mm. wide at the 

 apex ; radicle 2 mm. long. 



Hunmlus japonicus, Sieb. et Zucc. 



Achene with thin membranous pericarp, and thicker endocarp, 



Seed globose, conforming to the shape of the achene, slightly 

 flattened, 4-4-25 mm. in diameter ; testa hard, crustaceous ; tegmen 

 almost imperceptible, smooth ; hilum inconspicuous. 



Endosperm reduced to a fine film surrounding the embryo, 

 greenish. 



Embryo spirally coiled, colourless, filling nearly the whole seed ; 

 cotyledons as in H. Lupulus ; radicle terete, obtuse, incumbent on the 

 back of the cotyledons and about as long. 



Seedling. 



Primary root tapering gradually downwards, and giving off 

 fibrous lateral rootlets. 



Hypocotyl erect, terete, glabrous, reddish, 3-6'25 cm. long, and 

 more or less tinted with red. 



Cotyledons linear, entire, obtuse or acute, slightly connate at 

 the base, very shortly and finely pubescent with hairs which become 

 glandular when fully developed, with a distinct midrib sunk on the 

 upper surface, and prominent beneath, 2-8-3 cm. long and 2 - 5- 

 3 mm. wide. 



Stem ultimately twining round some support, with the inter- 

 nodes undeveloped in the seedling stage. 



Leaves simple, cauline, opposite, stipulate, petiolate, hairy and 



