BIGNONIACEJ3 



343 



nerved, shortly petiolate, hispid or slightly scabrous, membranous, 

 not very persistent. 



Second, third and fourth pairs inclusive or a smaller number, 

 similar but larger. 



Fifth pair with one or two small leaflets at base of blade quite or 

 partly detached. 



Sixth pair pinnate. 



Incarvillea Olgae, Eegel (fig. 573). 



Hypocotyl erect, terete, glabrous, pale green, 1-1-7 cm. long. 



Cotyledons triangular, obtuse, shallowly emarginate, truncate at 

 the base, obscurely and alternately incurvinerved, 

 deep opaque green, petiolate ; lamina 5-6 mm. 

 long, 4-7 mm. wide ; petiole slightly channelled 

 above, glabrous, almost biconvex, connate at the 

 base, 6-10 mm. long. 



Stem herbaceous, erect, terete, glabrous, pale 

 green or stained with red ; 1st internode 2*75 mm. 

 long ; 2nd 4 mm. 



Leaves simple, cauline, opposite, exstipulate, 

 petiolate, alternately penninerved, glabrous, deep 

 green above, paler beneath, shining on both sur- 

 faces ; petioles semiterete, glabrous, channelled 

 above, subconnate at the base. 



First pair ovate, obtuse, minutely cuspidate, 

 with one to two small serratures on each side, 

 about the middle. 



Second pair similar, but more acutely cuspi- 

 date. 



Incarvillea compacta, Maxim. 



FIG. 573. 



Hypocotyl short, not appearing above the soil. Incarvillea Olgce. 



Cotyledons almost reiiiform, broadly cordate 



at the base, emarginate, obtuse, with long petioles, fleshy, dark 

 green, glabrous, indistinctly trinerved. 



First leaves simple, radical, alternate, minutely emarginate, cor- 

 date at the base, oblong, unsymmetrical, one side of the leaf extend- 

 ing farther down the petiole than the other, exstipulate, with very 

 long petioles, bright green on the upper side, subglaucous beneath, 

 glabrous, pinnatinerved. 



Eecremocarpus scaber, Buiz et Pav. (fig. 574). 

 Primary root slender, fibrous, giving off lateral branches. 



