600 



ON SEEDLINGS 



ridged with dark green, edges hairy ; the first few internodes very 

 short, nearly as thick as the hypocotyl, the subsequent ones several 

 centimetres long. 



Leaves simple, cauline, alternate, petio- 

 late, palmatinerved and reticulate, toothed, 

 ultimately palmately three- to five-lobed, 

 scabrous, deep green above, paler beneath ; 

 petiole semiterete, channelled above, taper- 

 ing slightly upwards from a stout base. 



No. 1. 4-6 cm. long and 3'5-5 cm. 

 wide, with a stout, channelled petiole 

 nearly half as long as the blade, broadly 

 cordate, sinuate-dentate, often irregularly 

 palmatilobed, each tooth and the acumin- 

 ate apex ending in a mucro, palmatinerved 

 and obscurely, although closely reticulated, 

 scabrous, rather thick. 



No. 2. Similar. 



No. 3. With a tendril from the axil and 

 more palmatilobed, also with a deeper notch 

 at the base, and sunk nerves and veins. 



Acanthosi.cyos horrida, Welw. (fig. 383). 

 Hypocotyl very variable in length, erect , 

 succulent, pale green with two short lines 

 of glandular hairs running down from the 

 base of the cotyledons, otherwise gla- 

 brous. 



Cotyledons ovate or obovate, obtuse, 

 subemarginate, three- to five-nerved, convex 

 above and covered with a short, dense, 

 white, scabrous pubescence, pale, or sub- 

 glaucous-green, paler beneath, glabrous, 

 shining, five-nerved and subreticulate, 3-15 cm. long, 2'2 cm. wide. 

 Stem erect when young, succulent, terete, ridged and furrowed, 

 thinly hairy with jointed hairs ; ridges pale and furrows deep 

 green ; 1st internode undeveloped ; 2nd 5'1 cm. long. 

 Leaves simple, cauline, alternate. 



No. 1. Oblong, linear, acute, concave, carinate, entire, 8*25 mm. 

 long. 



Nos. 2 and 3. Similar but smaller with a spine on each side at 

 the very base in the position of stipules ; spines ridged, furrowed 

 and hairy like the stem. 



FIG. 888. 



Acanthosicyos horrida. 

 Half nat. size. 



