SOLANACE^E 295 



succulent, ultimately woody, dull green, pubescent ; 1st internode 

 4 mm. long ; 2nd 5 mm. ; 3rd 5 mm. ; 4th 6 mm. 



Leaves thinly pubescent and ciliate, ultimately glabrescent except 

 at the margin, where the hairs are more persistent ; petioles 

 channelled on the upper side tapering downwards from their point 

 of insertion. 



No. 1. Ovate, entire, obtuse, cuneate at the base. 



No. 2. Cordate-ovate, obtuse, entire, having ascending incurved 

 nerves. 



No. 3. Cordate-ovate, slightly unequal at the base, obtuse. 



No. 4. Ovate, acute, unequal at the base. 



Ultimate leaves more or less pubescent but variable, cordate- 

 ovate, subacuminate, obtuse, equal or unequal at the base ; other 

 forms are triangular-ovate, acuminate, obtuse, deeply pinnatifid at 

 the base with two to three basal lobes, and a large, ovate, acuminate, 

 terminal lobe ; lateral lobes obliquely oblong, or ovate, obtuse, 

 binerved. 



Solanum giganteum, Jacq. 



Hypocotyl finely pubescent, light green or colourless. 



Cotyledons ovate lanceolate, acute, entire, ciliate, shortly petio- 

 late, minutely pubescent, light green, indistinctly pinnatinerved like 

 the leaves. 



Stem erect, terete, herbaceous, pubescent, light green ; 1st inter- 

 node 2-4 mm. long. 



First leaves ovate-oblong, acute or subobtuse, ciliate, sprinkled 

 over with a few short hairs, light green, distinctly pinnatinerved. 



Solanum Jacquinii, Willd. 



Hypocotyl as in S. giganteum, but 3-4 cm. long. 



Cotyledons lanceolate, acute, unequal, petiolate, minutely pubes- 

 cent with distinct midrib and indistinct lateral nerves. 



Stem as in S. giganteum ; 1st internode 4-5 mm. long. 



First leaves lanceolate-ovate, serrate, acute, pubescent, light 

 green, distinctly pinnatinerved. Subsequently they become lyrate. 



Solanum quitoense, Lam. 



Primary root comparatively short, tapering downwards and 

 branched. 



Hypocotyl glandular-pubescent or hairy, 1'3-1'5 cm. long. 



Cotyledons broadly ovate, acute or subacute, glandular-hairy on 

 both surfaces, with a distinct midrib ; lamina 1-1*2 cm. long, 

 6-8 mm. wide ; petioles channelled above, 4 mm. long. 



