584 ON SEEDLINGS 



to be oblong-ovate. The first leaf is transversely oval ; the 

 second roundly ovate ; the next three shortly trifid and three- 

 or faintly five-nerved. 



A slight modification from the above types is met with 

 in P. maliformis which has broadly oblong, emarginate coty- 

 ledons. Its first three leaves are lanceolate and acuminate 

 with a shallowly cordate base. In P. edulis the cotyledons 

 are oval, and the first three leaves oblong- elliptic, and obtusely 

 acuminate. 



The oval cotyledons of T. Van Volxemii (fig. 378) are tri- 

 nerved, but the lateral nerves give off each a strong branch. 

 The first leaf is oblong, shortly trifid, and is followed by five 

 others which are trinerved and tri-lobed or -partite, with 

 narrowly oblong, or lanceolate, finely serrulate lobes. The coty- 

 ledons of Carica cundinamarcensis (fig. 380), and those of C. 

 Papaya maxima differ but slightly from the type in being 

 broadly oblong, and cuneate at the base. The first two leaves 

 of the former are oblong-cordate, shallowly and coarsely 

 toothed ; these are succeeded by six others which show a few 

 large teeth as if they were inclined to become pinnatifid. 

 The first leaf of C. Papaya maxima is small, lanceolate, and 

 entire. 



The most remarkable variation from the type occurs in 

 Modecca trilobata (fig. 379). The cotyledons are unusually 

 large, broadly ovate and obtuse, with a wide sinus or inden- 

 tation near the apex on one side, trinerved and copiously 

 reticulate. The first leaf is ovate, subcordate at the base, 

 distantly and irregularly toothed, and strongly acuminate. 

 The second and third ones are deeply trilobed with ovate or 

 lanceolate, acuminate, entire lobes. 



Passiflora Leschenaultii, DC. 



Hypocotyl glabrous, about 1 cm. long. 



Cotyledons oblong-ovate, obtuse, subemarginate ; limb 9 mm. 

 long, 6 mm. wide ; petiole 3 mm. long. 



Stem flexuose, suffrutescent, striate or somewhat furrowed, 

 pubescent, green ; 1st internode 3 mm. long ; 2nd 3*5 mm. ; 3rd 

 4*5 mm. ; 4th 5-5 mm. ; 5th 4'5 mm. 



Leaves. No. 1. Transversely oval, cuspidate, three- to five- 

 nerved, subciliate at the margins, and pubescent on the nerves on 



