530 ON SEEDLINGS 



Stem erect, terete, herbaceous, ultimately woody, glabrous, 

 tinged with red ; 1st internode '75-1-25 mm. long ; 2nd, 3rd, etc. 

 varying about the same length. 



Leaves simple, entire, cauline, opposite, decussate, oblong, 

 obtuse, tapering to the base, sessile, glabrous, light green, one- 

 nerved. 



Eucalyptus Globulns, Labill. (fig. 338). 



Fruit a capsule, three- to four-celled, many-seeded, sunk in the 

 truncated receptacle dehiscing along the middle of the valves. 



Seed horizontal, flattened, compressed and angled laterally or 

 dorsally into very various shapes ; testa deep brown or black ; 

 hilum ventral, paler in colour than the rest of the seed. 

 Endosperm absent. 



Embryo straight or nearly so, fleshy, colourless, occupying the 



whole interior of the seed, and conforming to it in general outline ; 



cotyledons broader than long, deflexed 



2, and convolute over the radicle, which 



the lobes equal in length ; half of one 

 cotyledon lies over half of the other, 

 and consequently only one half of each 

 cotyledon lies against the testa ; radicle 

 long, stout, fleshy, truncate at the end 

 PIG, ass, Eucalyptus Globulus. where it lies against the testa, otherwise 



?& *J*tt wholly enclosed by the lon g itudinall y 



attachment ; p , petiole from coiled cotyledons, parallel with the axis 

 Lt^att-rrS 1 " 8 and consequently some distance from 

 the hilum. 



Seedling (fig. 339). 



Hypocotyl erect, terete, about 3 5 cm. long. 



Cotyledons deeply bifid, trinerved, the middle nerve ending in 

 the sinus ; lobes obovate-oblong, diverging ; lamina 5 mm. long, 

 9 mm. wide. 



Stem woody, erect, terete at the base, and quadrangular upwards, 

 warted on the angles and faces, covered with a glaucous-white 

 bloom, then becoming pale green and ultimately brown ; 1st inter- 

 node 1*2 cm. long ; 2nd 1-1 cm. ; 3rd 1'45 cm. ; 4th 1 cm. ; 5th 

 1-35 cm. ; 6th 1-1 cm. ; 7th 1-35 em. ; 8th 9 mm. 



Leaves simple, entire, cauline, opposite, decussate, and sessile in 

 the young plant, alternate and petiolate in the adult, exstipulate, 

 linear-lanceolate, glabrous, perforated with glands, covered with a 

 glaucous bloom, becoming pale green, ultimately dying off brown. 



