145 
place only with difficulty, especially as the flowers are also 
erect. With regard to the Greenland individuals I have, how- 
ever, made an observation which points to the possibility of 
self-pollination — I have seen that the anthers may open at 
an earlier date, even in the bud.” As a supplement to this 
description given by Warminc may serve the following hitherto 
unpublished notes by Osrenrerp, which are taken from his 
diary of the Ingolf-Expedition and which I have his kind 
Fig. 3. (Material from Greenland). 
A, A fully expanded flower seen from above; shows that the anthers are at a distance 
from the stigma. B, Corolla with stamens seen in side view, and C, pistil with sepal of 
the same flower. D, E, Pollen-grains. F, A young flower the corolla of which has not 
yet fully expanded; the anthers are open, the stigma is ripe and has already pollen upon 
it; the anthers being so near to the stigma, self-pollination may perhaps take place fairly 
easily. G, A young flower; the anthers are open, and the stigma is ripe; the latter has 
a tripartite style (see Fig. H). Figures and text are by E. WARMING; 1886. 
permission to quote: “In a bud which is in the act of 
opening the stamens are bent closely around the style. The 
latter is moist when the stamens are just in the act of 
opening; honey occurs abundantly in large drops at the base 
of the style. (Either homogamous or) slightly protogynous. 
The stamens are always bent somewhat inwards. No scent; 
the flowers were open after rain and always erect.” 
The structure of the flower has also been described by 
SKOTTSBERG. 
Hartz records that it is visited by flies. 
XXXVI. 10 
