36o 



ANGIOSPERMAE—DICOTYLEDONES 



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

 Schletterer records the same visitor. 



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

 Hymenoptera (Hemiteles septentrionalis Holmgr., and Orthocentrus pedestris 

 Holmgr.) and Diptera (Aricia (Spilogaster) dorsata Zett., A. (Chortophila) megastoma 

 Bohem., and Scaeva dryadis Holmgr.), 



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

 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, and 

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



Fig. 113. Dryas integrifolia^ T'lj/i/ (from Greenland ; after E. Warming). A. Entire plant (x %). 

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

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



nogle gronlandske Blomst.,' pp. 127-8). 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 Z. (Herm. Miiller, ' Fertilisation,' p. 229 ; Kerner, ' Nat. Hist. 

 PI.,' Eng. Ed. I, II; Loew, ' Bliitenbiol. Floristik,' p. 390; Schulz, ' Beitrage,' I, 

 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 Miiller, the hermaphrodite flowers are 

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



