3i8 ON SEEDLINGS 



petioles subterete, narrowly channelled above, stout, tapering towards 

 the apex, densely glandular-hairy, pale green. 



First pair oblong-cordate, obtuse, entire, slightly wavy at the 

 margin, five-nerved. 



Second pair rotund-cordate, obtuse, entire, five-nerved ; three of 

 the nerves spring directly from the apex of the petiole and are naked, 

 that is without parenchyma on the sides at the base. 



Third pair rotund-cordate, obtuse, five- to seven-nerved, obscurely 

 and distantly dentate at the apex of the principal nerves and veins ; 

 three principal nerves as hi the second pair. 



Fourth pair with closed or overlapping auricles at the base, and 

 more decidedly dentate at the apex, otherwise like the third. 



Martynia fragrans, LindL 



Hypocotyl as in M. proboscidea, densely glandular-hairy, 7- 

 10' 5 cm. long. 



Cotyledons somewhat fleshy, broadly oblong or subrotund, emar- 

 ginate, auricled at the base with a long channelled petiole, covered 

 with glandular hairs, pinnatinerved as in the leaves. 



Stem as hi M. proboscidea ; 1st internode 1-1-2 cm. long. 



First leaves opposite, oval-oblong, obtuse, shortly petiolate, ciliate, 

 covered with glandular hairs, light green, pinnatinerved. 



ACANTHACEjE. 



Benth. et Hook, Gen. PL ii. 1060. 



Fruit and Seed. The ovary, consisting of two carpels, 

 is superior, two-celled, and undivided. The ovules are collateral 

 in pairs in each cell of Thunbergia ; in the tribe Nelsonieae they 

 are numerous and superposed in a double series ; and in all 

 other tribes they vary from two to many, but seldom exceed 

 eight, and are arranged in a single series or alternately one 

 above the other. In all cases they are anatropous or shortly 

 amphitropous. The fruit is a capsule (except in Mendoncea 

 where it is one-seeded and drupaceous), globose, oblong, oblong- 

 linear, terete or compressed in various ways, equal from the 

 base upwards, or contracted at the base forming a solid, seed- 

 less stalk. It dehisces loculicidally from the apex to the base, 

 including the solid, seedless portion, and often bursts elastic- 



