340 ON SEEDLINGS 



First pair ovate, obtuse, unequal at the base, with one or two 

 obsolete teeth on each side. 



Second pair ovate-cordate, obtuse, submucronate, five-nerved, 

 and shallowly dentate in the lower half. 



Third pair ovate, cordate, acuminate, five-nerved in the lower 

 half and dentate along two-thirds of their length. 



Ultimate leaves large, cordate, entire or triangular or shortly 

 trifid above the middle, five-nerved at the base ; lateral lobes small, 

 triangular, obtuse or acuminate ; middle lobe short, broad, tri- 

 angular, suddenly acuminate. 



Catalpa syringaefolia, Bunge, var. speciosa. 



Hypocotyl as in C. Krempferi ; 3 cm. above the soil. 



Cotyledons very similar to those of C. Kaempferi but larger, 

 trinerved at the base with the middle one terminating in the 

 notch ; lobes broadly obovate, 2 cm. long, 3'15 cm. from the tip 

 of one to the tip of the other. 



Stem sparingly pubescent and covered with lenticels, green, 

 and purplish towards the base; 1st internode 2-65 cm. long; 2nd 

 2-7 cm. ; 3rd 2-4 cm. 



Leaves similar to those of C. Kaempferi, opposite, decussate. 



First pair of leaves subcordate, acuminate, distantly and 

 minutely dentate. 



Second and third pairs cordate, acuminate, entire. 



Fourth pair cordate, acuminate, distantly dentate on the lower 

 half. 



Catalpa bignonioides, Walt. 



Hypocotyl as in C. Kfempferi. 



Cotyledons deeply bipartite nearly to the base of the lamina, 

 glabrous except the basal part and both surfaces of the petiole ; 

 real length of the lamina about 3 mm. ; lateral lobes 1 '3-1-5 cm. 

 long, 1-1-15 cm. wide ; width across both lateral lobes 2-4-2-6 

 cm. ; midrib ending below the sinus and giving off from each side 

 two lateral nerves which run into the lobes and, uniting some distance 

 below their apex, give off numerous smaller anastomosing branches ; 

 petiole cuneate, tapering to the base, grooved on the upper surface 

 by the upturning of the edges, convex on the back, strongly tri- 

 nerved, finely and densely glandular-pubescent or papillose, about 

 5 mm. long. 



Leaves opposite, decussate, and ternately verticillate, unequal, 

 alternately incurvinerved and reticulate, papillosely glandular on 

 the nerves on both surfaces and margin, deep green above, paler 



