406 Fr. J. Mathiesen. 



According to Heinricher and Sylvén the seed germin- 

 ates in early summer. The first-named author, who has 

 studied Bartschia very thoroughly, has pointed out that it 

 belongs to the comparatively few piants which produce buds 

 in the axils of the cotyledons. Whilst the uppermost part of 

 the primary shoot dies away, the following year one of these 

 buds develops into a foUage-leaf-bearing shoot, in the basal 

 portion of which, small innovation-shoots arise, which, like 

 their parent-shoot, will continue their growth in their second 

 year, and become foliage-leaf-bearing shoots. As was the 

 case with the primary shoot, the uppermost part of the axes 

 of the succeeding shoot-generations dies down to above the 

 innovation-shoots. Even after the 4th vegetative period, 

 Heinricher's cultures did not yet bear flowers; the young 

 piants had formed small sympodial, subterranean rhizomes, 

 composed of the persistent, basal portions of the innovation- 

 shoots. 



Heinricher is of opinion that, in Nature, the first vege- 

 tative-stage is of 4 — 5 years duration. 



With regard to the morphology of the full-grown plant, 

 in the following description the statements given in the cited 

 work of Heinricher will be found verified; for criticism 

 of preceding investigations (Hovelacque, Kerner), reference 

 may be made to the same author. 



Fig. 15, A and D show the structure of the shoot, and 

 the mode of branching. In Fig. 15, A, each of the two shoots, 

 11^ and //^, had terminated in an inflorescence. The shoots 

 aré in their 2nd year of development; during the first year 

 each of them had developed a subterranean portion, bearing 

 decussated scale-leaves which have now withered ; the upper- 

 most pairs of these scale-leaves has served as bud-scales for 

 the winter-buds. The first year's growth-increment especially 

 of 11^ is seen to have the character of a runner, the growth- 



