360 



ANGIOSPERMAEDICOTYLEDONES 



von Dalla Torre (Tyrol) saw the bee Halictoides dentiventris Nyl. 5, am 

 Schletterer records the same visitor. 



Lindman (Dovrefjeld) observed 2 species of flies ; and Holmgren (Spitzbergen 

 Hymenoptera (Hemiteles septentrionalis Holm.gr., and Orthocentrus pedestri 

 Holmgr.) and Diptera (Aricia (Spilogaster) dorsata Zetl., A. (Chortophila) megastom; 

 Bohem., and Scaeva dryadis Holmgr.). 



Ekstam noticed several small and medium-sized flies in Nova Zemlia. MacLeo< 

 saw a short-tongued bee, a hover-fly, and a Muscid in the Pyrenees (Bot. Jaarb 

 Dodonaea, Ghent, iii, 1891, p. 427). 



847. D. integrifolia Vahl. Warming observed this species in Greenland, am 

 states that both hermaphrodite and male flowers occur there (' Bestovningsmaade a 





Fig. 113. Dryas tnttgrt/olia, Vahl (from Greenland : after E. Wanning). A. Entire plant (x 5). 

 B. Hermaphrodite flower. C. Male flower. D. Protogynous hermaphrodite flower. E. A carpel. 

 F. Tip of a style with germinating pollen-giains. G. Anther. H. A foliage- leaf. 



nogle gronlandske Blomst.,' pp. 1 2 7-8). The hermaphrodite flowers are homoga- 

 mous or slightly protogynous, or even slightly protandrous : automatic self-pollination 

 can readily take place. (Cf. Fig. 113.) 



247. Geum L. 



Flowers yellow; protogynous or rarely homogamous; with concealed nectar 

 secreted in the receptacle. Sometimes androdioecious or andromonoecious. 



848. G. rivale L. (Herm. M tiller, Fertilisation,' p. 229; Kerner, 'Nat. Hist. 

 PI.,' Eng. Ed. 1, II ; Loew, ' Bltitenbiol. Floristik,' p. 390 ; Schulz, ' Beitragt 

 PP- 33~4 Warnstorf, Verh. bot. Ver., Berlin, xxxviii, 1896; Knuth, ' Bloemenbiol. 

 Bijdragen.') In the flowers of this species the calyx is brownish-red, and the 

 petals bright yellow streaked with red; nectar is secreted in numerous drops in 

 the receptacle. According to Hermann Mtiller, the hermaphrodite flowers are 

 slightly protogynous : at first the mature stigmas project beyond the still unripe 



