

484 ANGIOSPERMAEDICOTYLEDONES 



1130. O. aquatica Poir. (=0. Phellandrium Lam., and Fhellandrium aquaiicum 

 Z.). Schulz (' Beitrage,' II, p. 1 90) states that this species is andromonoecious with 

 protandrous hermaphrodite flowers. Warnstorf (Verh. bot. Ver., Berlin, xxxviii, 1896) 

 describes the plants growing in the neighbourhood of Ruppin as being andromonoe- 

 cious. The umbellules of primary umbels bear hermaphrodite flowers, or there may 

 be a few marginal male flowers ; those of the secondary umbels may bear herma 

 phrodite flowers only, or marginal male and central hermaphrodite ones, or male 

 flowers exclusively : those of the tertiary umbels are purely male. 



Visitors. Herm. M tiller observed the following. 



A. Coleoptera. (a) Cerambycidae : 1. Leptura livida Z., numerous, sk 

 po-dvg. (b) Chrysomelidae: 2. Prasocuris phellandrii Z., dvg. the flowers, (c) Cocci 

 nellidae : 3. Coccidula rufa Hbst., nect-lkg. (d) Elaieridae : 4. Adrastus palleus F. Er., 

 skg. B. Diptera. (a) Muscidae : 5. Aricia vagans Fall., skg. ; 6. Cyrtoneura 

 curvipes Macq. (as determined by Herr Winnerz), do.; 7. Lucilia cornicina F. 



(b) Mycetophilidae : 8. Sciara thomae Z. (c) Siratiomyidae : 9. Odontomyia viridula 

 F. (d) Syrphidae: 10. Eristalis arbustorum Z. ; 11. Syritta pipiens Z. and others. 

 C. Hymenoptera. (a) Apidae: 12. Prosopis variegata F. J; 13. Sphecodes 

 gibbus Z. S. (b) Ichneumonidae : 14. Various sp. (c) Scoliidae: 15. Tiphia 

 ruficornis Klg. (d) Sphegidae: 16. Oxybelus bipunctatus 01. 5; 17. Pompilus 

 trivialis Dahlb. 5; 18. P. viaticus Z. (e) Tenthrcdinidae : 19. Athalia rosae LA 

 20. Tenthredo sp. D. Lepidoptera. 21. Vanessa c-album Z. 



The following were recorded by the observers, and at the places stated. 



Knuth (Fbhr) (' Weit. Beob. ii. Bl. u. Insekt. a. d. nordfr. Ins.,' p. 234), 2 skg. hover- 

 flies (Eristalis sp. and Syrphus sp.) and Muscids (Musca domestica Z., Sarcophaga 

 carnariaZ.,and Scatophaga stercoraria). Alfken (Bremen), A. Diptera. Syrphidae. 

 1. ChrysotoxumfestivumZ. B. Hymenoptera. (a) Apidae: 2. Andrena parvula 

 K. 5. (b) Sphegidae : 3. Ceropales maculatus F. ; 4. Crabro brevis v. d. L. 5 anil . 



(c) Vespidae: 5. Odynerus parietum Z. 5. MacLeod (Flanders), 6 short-tongued 

 Hymenoptera, 8 hover-flies, 3 Muscids, a beetle, and a Lepidopterid (Bot. Jaarb. 

 Dodonaea, Ghent, vi, 1894, p. 269). 



1131. O. peucedanifolia Pollich. 



Visitors. MacLeod (Flanders) observed a Tenthredinid and 3 Muscids (Hot. 

 Jaarb. Dodonaea, Ghent, vi, 1894, p. 27). 



113a. O. crocata L. 



Visitors. The following were recorded by the observers, and for the localiti 

 stated. 



Scott-Elliot (Dumfriesshire), a humble-bee, a short-tongued bee, a wasp, 5 ho 

 flies, and 4 Muscids (' Flora of Dumfriesshire,' p. 78). Loew (Berlin Botanic Garde 

 2 hover-flies (Syritta pipiens Z. and Syrphus ribesii L), skg. 



341. Aethusa L. 

 1133. A. Cynapium L. (Herm. Miiller, ' Weit. Beob.,' I, p. 305 ; Schulz, 

 'Beitrage,' II, pp. 84, 90-1 ; Kerner, *Nat. Hist. PI.,' Eng. Ed. 1, II, pp. 342, 344; 

 Warnstorf. Verh. bot. Ver., Berlin, xxxv, 1895; Knuth, 'Bl. ii. Insekt. u. d. nordfr. 

 Ins.,' p. 155.) According to Schulz, the hermaphrodite flowers of this species are 

 slightly protandrous or homogamous, but Kerner describes them as protogynous. 

 Automatic self-pollination regularly takes place, as a result of the filaments bending 

 inwards. 



