222 



ON SEEDLINGS 



Stem erect, terete, slender, almost filiform, ultimately woody and 

 twining, finely and minutely pubescent when young, and purplish ; 

 1st internode 4-4*5 mm. long ; 2nd l'45-l - 6 cm. 



Leaves simple, entire, cauline, opposite, decussate, exstipulate, 

 shortly petiolate, alternately incurvi- 

 nerved and more or less reticulate, 

 glabrous, coriaceous or subcoriaceous, 

 deep green above, generally rather closely 

 reticulated with red or pink, paler beneath 

 and more or less suffused with pale red ; 

 petioles very short, semiterete, shallowly 

 channelled above, finely and minutely 

 pubescent, and reddish like the stem. 



First pair ovate, obtuse, slightly cor- 

 date at the base, or almost rounded. 



Second pair ovate, more elongated 

 and somewhat more pointed. 



FIG. 515. Echites umbellata. 

 Nat. size. 



Mandevilla suaveolens, Lindl. 



Primary root fleshy, tapering, flexu- 

 ose, colourless, and giving off lateral rootlets freely. 



Hypocotyl erect or frequently flexuose, pale green, finely and 

 minutely pubescent, 3-4-2 cm. long. 



Cotyledons foliaceous, ovate, obtuse, alternately penninerved, 

 reticulate, bright green and shining above, paler and shining beneath, 

 finely pubescent on the petiole and midrib beneath and at the mar- 

 gin, otherwise glabrous ; lamina 2'2 cm. long, 1'2 cm. wide ; petiole 

 erect, channelled above, 5 mm. long. 



Stem erect and soft, ultimately twining and woody, minutely and 

 closely pubescent, pale green ; 1st internode 1'8 cm. long. 



Leaves simple, entire, cauline, opposite, exstipulate, petiolate, 

 minutely and finely pubescent on the petioles, the under sides of the 

 midrib especially at the forkings of the veins and at the base of the 

 leaf and at the margins, otherwise glabrous, alternately penninerved 

 with ascending nerves slightly incurving at the tip, reticulate ; 

 petioles semiterete, shallowly channelled above, ultimately glabrous 

 except in the channel, green or deeply stained with crimson. 



First pair lanceolate, acute. 



Second and probably the third pairs similar. 



Ultimate leaves oblong-cordate, acuminate, acute. 



