602 



ON SEEDLINGS 



scattered hairs, light green ; 1st internode 3-4 cm. long, 1-5 mm. 

 thick, 



Leaves simple, cauline, alternate (first pair opposite), exstipulate, 

 petiolate, palmati-nerved and -lobed, reticulate, pubescent, rather 

 membranous, deep green above, paler beneath ; petioles semiterete, 

 tapering slightly upwards, channelled above. 



First pair opposite with channelled, slightly pubescent petioles, 

 2 cm. long and T25 mm. thick ; lamina 4-5 cm. long, 3-4 cm. 

 wide, broadly cordate with truncate apex, irregularly repand- 

 dentate, palmatinerved and reticulate with sunk nerves, pubescent 

 and dark green above, slightly paler and pubescent on nerves only 

 beneath, not very thick. 



Nos. 3-5. Alternate, palmati-nerved and -lobed, cordate at base. 



Thladiantha dubia, Bunge (fig. 385). 



Hypocotyl erect, square, stout, minutely hairy, 1-2 cm. long, 

 light green. 



Cotyledons subrotund or orbicular, emarginate (entire at first), 



petiolate, covered with stiffish 

 hairs on the upper side, gla- 

 brous beneath, green, in- 

 curvinerved; petioles broad, 

 deeply channelled on the upper 

 side. 



Stem erect, terete, hairy, 

 herbaceous ; 1st internode 

 3-4 mm. long. 



First leaves simple, cau- 

 line, alternate, petiolate, ex- 

 tipulate, subrotund, obtusely 

 crenate or bluntly serrate, 

 cordate at the base, hairy, 

 green, pinnatinerved. 



FIG. 385. Thladiantha dubia, x 2. 



Cucumis sativus, L. (fig. 



Hypocotyl quadrangular with obtuse angles and a median furrow 

 along each face, succulent, pale green, pubescent or scabrous on the 

 angles, erect, 5 cm. long, lengthening as it develops to 9 cm., 

 4 mm. thick. 



Cotyledons oblong, obtuse, narrowed at the base into short, 

 broad, deeply-channelled petioles, with ascending nerves, pale green 



