408 Andr. Lundager 



east. The two almost expanded flowers had their development 

 stopped when the snow-layer melted round the tuft and on May 28 

 they were found to have closed, and no other buds had opened. 

 Not until June 8 were some other buds on longer stems fairly 

 widely open. 



Epilobium latifolium is protandrous according to the material 

 first collected by me. Afterwards I investigated some flowers on 

 Moskusoksefjeldene on July 9, 1908, and in them frequently found 

 the style to be further developed relatively to the anthers; I regard 

 protandry to be the most common condition in north-east Greenland. 

 (See also Warming, 1886, in K. Danske Videnskab. Selsk. Oversigt, 

 p. 141, fig. 11). 



In 1908 I found the plant in flower on July 7. In the material 

 collected there were also fruits from the previous year, though the 

 summer of 1907 might be regarded as unfavourable, as a relatively 

 low temperature had prevailed during the whole time ; therefore it 

 is beyond doubt that the species in the summer of 1908 had set 

 fruit in the majority of the localities in which it reached the flower- 

 ing-stage as early as the beginning of July. The power of the 

 species to spread below the soil is indisputable; but it is not of 

 necessity of value to the preservation of the plant. Whether the 

 seeds are dispersed by the agency of birds or by the wind or by 

 both I am not prepared to say; but one of these two factors must 

 have been at the disposal of the plant in one case, in which I found 

 the plant in a crack in the rock at some distance from its original 

 locality. It can scarcely have found its way there otherwise than 

 through seeds. (The possibility is not excluded that the seed had 

 been transported by the agency of running water; but this did not 

 occur to me when I saw the plant on the spot and now, after some 

 time has elapsed, nothing can be stated with certainly either for or 

 against such a possibility). 



Stellaria humifiisa Rottböll. On August 12, 1907, I observed the 

 plant on the shore at Yderbugt where it was visited by a small, 

 grey butterfly which returned to the same tuft over and over again. 

 The flower is decidedly protandrous; the anthers were empty when 

 the stigmas were ripe. The head of the insect-visitor was dusted 

 with pollen from a young flower, but it appeared to be very fond 

 of older flowers also; the insect licked the petals and the ovary of 

 the latter, but also stood head downwards in order to be able to 

 reach the lower part of the flowers; it also tried to thrust itself in 

 between the sepals from the outside. (See also Warming, 1890, 

 in Festskrift udgivet af Den botaniske Forening, p. 212, fig. 8). 



Stellaria longipes Goldie. On August 11, 1907, I observed small 

 Diptera visit the plant. (See also Warming 1890 I.e., p. 207, fig. 6). 



