73 



has already developed two leaves that show in general features 

 the shape of the final ones, but they have a smaller number 

 of divisians than the later ones. We see in Fig. 6^] an abnor- 

 mal case, where three cotyledons have been developed, but 

 the seedling does not differ in other respects from the above- 

 mentioned description of this (Fig. 6G). The young plant will 

 continue its growth in that manner, the primary root will 

 gradually attain the shape of a so-called tap-root (Fig. 68), 

 while the proper rhi;?ome will show merely a short, nearly 

 subterranean axis, upon which leaves will develop until the 

 inflorescence terminates the main axis, after which the plant 

 will be renewed by the development of buds in the axils of 

 the basal leaves. A full grown plant has several shoots 

 upon the rhizome, at the base of the f^owering stem, and 

 beside the primary root a few secondary ones Avere observed 

 which were almost the same size. 



TJiaspiitin miremn. 



This species agrees in most respects with the one above 

 described, the only difference being in the shape of the leaves. 

 Fig. 69 in Plate XI shows a germinating plantlet, of which 

 the cotyledons and the primary root show the same develop- 

 ment as in T, barbinodt\ The first leaf, on the contrary, 

 has not any separate division, but is almost entire or slightly 

 five-lobed, with the margin sharply serrate. 



Osinorrkiaa longistylis. 



The germinating plantlet (Plate XI, Fig. 70) has a 

 strongly developed primary root, but the hypocotyl is rather 

 inconsiderable. The cotyledons are long-petioled, with linear 

 blades, and are entirely above ground. The first leaf shows 

 relatively the shape of tlie final ones, with the exception that 

 it is smaller and has only three divisions, the shape of wdiich, 

 however, accords in many respects with that of the later leaves. 

 It is to be noted that the form of the divisions of these decom- 

 pound leaves, ** broadly ovate, with the margin serrate/' is 

 not the only one which occurs in this species. We shall see, 

 at a later stage of development (Fig. 71), where the cotyledons 

 have dropped and where the leaf (L^) shows a somewhat 



