SAPINDACE^E 357 



with the branches ending in a colourless cartilaginous margin ; 

 petioles tapering upwards from a very stout base, which is flattened 

 above, while upwards it becomes more slender and nearly terete, 

 deep brownish-red, and more or less densely covered with adpressed 

 pubescence ; petiolules short, subterete, narrowly channelled above, 

 otherwise like the petioles. 



Nos. 1-7 or 8. Simple, entire, ovate-lanceolate, acuminate, obtuse, 

 having a pulvinus at the base of the lamina, which is articulated 

 with the petiole, proportionately broader than the leaflets of the 

 following compound leaves. 



No. 8. Uni- to tri-foliolate. 



No. 9. Trifoliolate. 



No. 10. Five-foliolate. 



Nos. 11 and 12. Five- to seven-foliolate, and gradually larger. 



Cardiospermuin Halicacabum, L. (fig. 249). 



Fruit a capsule, triangular, with globose, membranous lobes, 

 each one-celled, one- seeded, dehiscing loculicidally. 



Seed globose, deep brown, shining, glabrous, very hard ; hilum 

 broad, reniform, transverse, whitish ; raphe none ; chalaza very 

 large, broad, lunate, lying along the upper side of the hilum, and 

 indicated by a slight elevation or thickening ; testa very hard, crus- 

 taceous ; tegmen thin, closely adhering to the testa. 



Endosperm absent. 



Embryo filling the interior of the seed, transversely plaited ; 

 cotyledons cuneate-spathulate, entire, minutely auricled at the base, 

 with a few large transverse folds to accommodate themselves to the 

 globose seed, thick and fleshy, pale yellow. In the transverse section 

 two segments of the cotyledons appear thicker than the central two 

 lobes, owing to the former being cut obliquely ; radicle very short, 

 oblong-ovoid, obtusely pointed, seated in a small, shallow notch at 

 the base of the cotyledons, and forming an impression near the tip 

 of the back of the inner cotyledon, embedded in the testa at its tip. 



Seedling (fig. 250). 



Primary root vertical, with a few thin, lateral, branched, hori- 

 zontal rootlets, firm, colourless. 



Hypocotyl herbaceous at first, 3-4 cm. long, a little over 1 mm. 

 thick, round, pubescent, light green. 



Cotyledons sessile, about 1 cm. long, 2-3 mm. broad, thick, ligu- 

 late, truncate and broad at the apex, yellowish-green, glabrous, 

 caducous. 



herbaceous, terete, 1 mm. thick ; 1st internode 1-5-2 cm. 



