498 



ON SEEDLINGS 



Madura aurantiaca, Nutt. 



Hypocotyl erect, terete, glabrous, 4-5 cm. long, light green. 



Cotyledons rather fleshy, oblong-oval, obtuse, entire, shortly 

 petiolate, glabrous, shiny, dark green above, paler beneath, pinnati- 

 nerved like the leaves. 1 



Stem erect, terete, herbaceous, ultimately woody, covered with 

 stout hairs ; 1st internode 8-12 mm. long. 



First leaves simple, entire, cauline, opposite, lanceolate, acumi- 

 nate, acute, covered with minute hairs, light green, pinnatinerved ; 

 petioles short, channelled, hairy ; stipules small, deciduous. 



Dorstenia Contrajerva, L. (fig. 647). 



Hypocotyl erect, terete, pale green, 6-10 mm. long, pubescent. 

 Cotyledons rotund, rarely oval, emarginate, subtruncate at 

 the base, trinerved, glabrous, variable hi size, 5'5-9 mm. long, 

 7-9'5 mm. wide ; petiole slightly channelled above, pubescent, 

 3-4 mm. long. 



Stem herbaceous, stout, fleshy, very 

 short with scarcely developed internodes, 

 forming a perennial rootstock. 



Leaves simple, cauline, alternate, 

 stipulate, petiolate, deep green above, 

 thinly hairy, paler beneath and pubes- 

 cent especially on the nerves, five-nerved 

 on the basal half and alternately nerved 

 upwards ; petioles pubescent, terete and 

 channelled towards the apex ; stipules 

 subulate, obtuse, green, pubescent. 



No. 1. Cordate, subacute, five- to 

 seven- angled, and five -nerved, thinly 

 and obscurely dentate between the 

 angles. 



No. 2. More decidedly angled and 

 dentate. 



Ultimate leaves deeply trilobed ; 



middle lobe rhomboid or triangular-ovate, acuminate, strongly tri- 

 nerved and reticulate, with an angle or shallow lobe about the 

 middle on each side, and obscurely dentate along the margins ; 

 lateral lobes obliquely ovate, acute, strongly binerved and reticulate, 

 with one of the nerves running into a small lobe on the oblique 

 side. 



1 Tubeuf, 1. c. p. 114, describes the cotyledons as roundly-elliptic, and from 

 1-7 cm. long. 



FIG. 647. 



Dorstenia Contrajerva. 

 Nat. size. 



