338 



ON SEEDLINGS 



FIG. m.Bignonia insignis. 

 Nat. size. 



Leaves cauline, opposite, decussate, exstipulate, petiolate, alter- 

 nately incurvinerved and reticulate, glabrous except at the margin 



and on the principal 

 nerves where they are 

 shortly and minutely 

 pubescent, deep green 

 above, very pale or 

 whitish beneath ; peti- 

 ole terete, with a 

 slender channelled line 

 on the upper side, 

 densely and minutely 

 pubescent, articulated 

 with the stem, and 

 slightly thickened at 

 the insertion. 



First pair of leaves 

 reduced to lanceolate- 

 acuminate, pale green, 

 minutely pubescent 

 scales. 



Second and third pairs cordate -ovate, apiculate, entire, foliaceous. 

 Fourth pair simple but sometimes articulated with the petiole. 

 Fifth pair compound with one pair of leaflets, and terminating 

 in a tripartite, slender, hooked tendril by which the plant is 

 enabled to climb. 



Pithecoctenium muricatuin, Hoc. (fig. 570). 



Hypocotyl erect, terete, minutely pubescent, 1-1'G cm. long, 

 light green. 



Cotyledons broadly ovate, obtuse, slightly emarginate, obsoletely 

 and obtusely tri-lobed or -angular, increasing considerably in size 

 after emerging from the seed, petiolate, minutely pubescent, dark 

 green, five-nerved ; petioles short, thin, pubescent, deeply furrowed 

 on the upper face. 



Stem erect, terete, herbaceous, ultimately woody, pubescent ; 

 1st internode 8-10 mm. long ; 2nd about the same. 



First leaves cauline, opposite, compound, trifoliolate, petiolate, 

 exstipulate, pubescent ; leaflets obovate- oblong, obtuse, entire or 

 minutely emarginate, petiolulate, often unsymmetrical, ciliate, 

 green, pinnatinerved ; petioles long, thin, pubescent, channelled on 

 the upper side. 



