422 



ON SEEDLINGS 



numerous parallel, ascending veins, forking towards the margin, 

 obtuse or retuse and apiculate at the tip. 



No. 1. Unifoliolate ; lamina obovate-elliptic. 



No. 2. Abruptly bifoliolate ; terminal leaflet wanting ; lateral 

 leaflets oval or elliptic. 



Nos. 3 and 4. Pinnately trifoliolate ; leaflets elliptic. 



Nos. 5 and 6. Pinnately five-foliolate ; leaflets oblong-elliptic, 

 upper three subapproximate. 



Ultimate leaf of five or more pairs of leaflets and a terminal 

 one ; leaflets mostly opposite, ovate, obtuse, subcordate at the base, 

 apiculate, glabrous, glaucous-green above, glaucous beneath ; stipules 

 ovate, acuminate. 



Robinia Pseud- Acacia, L, (fig. 275). 



Hypocotyl erect, terete, glabrous, pale green, slender, T6-2 cm. 

 long. 



Cotyledons oblong-oval, obtuse, entire, equal or very slightly 

 unequal at the base, alternately incurvinerved, petiolate, thick with 



very obscure venation, glabrous, 

 light green on both surfaces ; 

 lamina 8-9 mm. long, 5'5-6'5 

 mm. wide ; petiole ascending, 

 semiterete, channelled above, gla- 

 brous, 1 mm. long. 



Stem erect, terete, zigzag or 

 flexuous, thinly pubescent in 

 seedling stage with upwardly ad- 

 pressed hairs, pale green, ulti- 

 mately arborescent ; Istinternode 

 5-7 mm. long, 2nd 2-3 mm. 



Leaves compound (first one 

 unifoliolate), imparipinnate, cau- 

 line, alternate, stipulate, petio- 

 late, alternately and ascendingly 

 penninerved and finely reticulate, 

 thinly or more or less conspicu- 

 FIG. ws.-Robinia Pseud-Acacia, x 2. ously pubescent on the margins 

 and petioles, deep glaucous-green 



above, paler and glaucous beneath ; leaflets entire, more or less 

 conspicuously stipellate in the adult plant, articulated with the 

 rachis ; stipules small, subulate, inconspicuous or sometimes 

 wanting ; petioles subterete, shallowly channelled above, more or 

 less pubescent, articulated with the stem and also with the leaflets. 



