228 



ON SEEDLINGS 



Calotropis gigantea, B. Br. (fig. 518). 



Primary root long, flexuose, somewhat woody, with long, un- 

 branched colourless fibres. 



Hypocotyl firm, 3 cm. long, 1-2 mm. thick, terete, glabrous 



and whitish near the 

 base, slightly tomen- 

 tose, and bluish- 

 brown above. 



Cotyledons shortly 

 petiolate, oblong, pro- 

 duced at the base 

 and forming a chan- 

 nel on the petiole, 

 rounded at the apex, 

 entire, penninerved, 

 glabrous, dull yellow- 

 ish - green above, 

 slightly paler and 

 shining beneath, not 

 very thick ; petiole 

 semiterete, channel- 

 led above, connate at 

 the base. 



Stem woody ; 1st 

 internode about 6 

 mm. long, slightly 

 compressed, green, 

 tomentose. 



Leaves simple, 

 entire, cauline, op- 

 posite, exstipulate, 

 shortly petiolate, al- 

 ternately incurvi- 

 nerved, tomentose, 

 greyish or hoary, 

 subcoriaceous. 



FIG. M.-Calotropi* gigantea. Nat. size 



obtuse, entire, penni- 



nerved, subsessile, 2-2'5 cm. long, and 1-1-25 cm. wide, not very 

 thick, slightly tomentose, dull greyish-green, slightly paler and 

 shining beneath. 



