372 



ON SEEDLINGS 



Mangifera indica are scale-like ; the ultimate ones long, simple, 

 and entire. 



Where the primary leaves are foliaceous and simple, the 

 first two are opposite, although succeeding ones are alternate. 

 Examples of this occur in Buchanania latifolia, Schinus tere- 

 binthifolius, Odina Wodier, and Duvaua dependens. An 

 exception occurs in Anacardium occidentale, where the first 

 four leaves are crowded together and oblong- elliptic. The 

 ultimate ones are also simple and entire, while those of Duvaua 

 are entire or sinuate. The third leaf of Schinus terebinthifolius 

 is trifoliolate, while the eighth one in Odina Wodier is the 

 first to attain that state of development. 



The only case of the primary leaves being compound coming 

 under my observation, occurs in Ehus typhina, where the first 

 three at least are trifoliolate, with the terminal leaflet much 



the largest and deeply incised. 



The first two only are opposite. 



Compare this with the seedling of 



Ailanthus glandulosa amongst the 



Simarubeae. 



Rims Thunbergiana, Scliult. (fig. 



255). 



Hypocotyl subterranean. 



Cotyledonsl&Tge, fleshy, persistent, 

 plauo-convex, subterranean, wrinkled, 

 pale yellow, petiolate, and both lying 

 on the same side of the stem, 2-6 cm. 

 long, 1-3 cm. wide, 8-10 mm. thick; 

 petiole about 6 mm. long, 



Stem woody, erect, terete, gla- 

 brous, reddish at first, then becoming 

 FIG. 256.-m, Thunlergiana. covere(1 wit h a glailCOUS-white bloom, 

 Half nat. size. 1.1-1 



then pale green, ultimately brown ; 



internodes short : 1st 1'7 cm. long ; 2nd 5'75 mm. ; 3rd 1-15 cm. ; 

 4th 6 mm. ; 5th 7'5 mm ; 6th 4 mm. ; 7th 6 mm. 



Leaves simple, cauline, alternate, exstipulate, petiolate, glabrous, 

 coriaceous, rigid, horizontal, alternately penninerved with numerous 

 parallel veins at right angles to the midrib and running straight to 

 the margin, simple, or more often forked and sometimes forking again 

 near the margin, brown and glossy at first, becoming covered with 



