244 Eue. Warming. 



hand, vegetative propagation undoubtedly takes place by 

 means of its rooting aerial shoots. To a certain degree it 

 merits a special place, side by side with the Stellaria- 

 type. 



Sagina nodosa has a peculiar mode of propagation. In 

 the axils of the foliage-leaves small, few-leaved shoots are 

 developed (see Fig. 5): these shoots fall off and, on striking 

 roots, form new individuals. For further details the reader 

 is referred to the explanation of Fig. 5. 



The Seedlings of Sagina nodosa immediately develop 

 a rosette-shoot which sometimes forms branches during the 

 first year. It s first internodes, however, are sometimes elongated 

 (Fig. 5, E). In plants of Minuartia stricta, cultivated by me, 

 small tufted plants were developed in the course of two 

 months, lateral shoots with short internodes being quickly 

 developed in some of the leaf-axils. In M. biflora Thekla 

 Resvoll also found lateral shoots (Fig. 32), but Sylvén 

 found none (loc. cit., p. 304). In other respects the seedlings 

 of Sagina Linnæi, Minuartia verna and M. intermedia appear 

 to correspond with those of M . stricta and Sagina nodosa 

 (see Sylvén, p. 266 and Thekla Resvoll, Fig. 29). 



As regards the time preceding the first flowering period 

 Thekla Resvoll states, that it is not probable that Sagina 

 intermedia flowers until the third year, but that Minuartia 

 tema, when cultivated, had flowered in the 3rd year, and 

 even in the 2nd year though sparingly, and that seedlings 

 of M. biflora, when cultivated, flowered in the 3rd year; 

 but, according to Sylvén, it appears that in nature the 

 first vegetative-stage ("Forstærknings-Stadium") lasts for 

 several years. It seems evident that the length of time is 

 dependent on the prevailing conditions. 



Pulvinate forms. The above-mentioned species are 

 plants with a tufted habit, which may sometimes form dense 



