484 ANCIOSPERMAE—DICOTYLEDONES 



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

 Z.). — Schulz (' Beitrage,' II, p. 190) states that this species is andromonoecious with 

 protandrous hermaphrodite flowers. Warnstorf (Verh. hot. 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. Miiller observed the following. — 



A. Coleoptera. (rt) Ccramhycidae: i. Leptura livida Z., numerous, skg., 

 po-dvg. (1^) Chrysovietidae: 2. Prasocuris phellandrii Z., dvg. the flowers, [c) Cocci- 

 nellidae: 3. Coccidula rufaZ'i^.f/., nect-lkg. {d) Elaleridae : 4. Adrastus palleus Z'. Zr., 

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

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

 {U) Mycetophilidae: 8. Sciara thomae Z. (t) Stratiomyidae : 9. Odontomyia viridula 

 F. (d) Syrphidac: jo. Eiislalis arbuslorum Z. ; 11. Syritta pipiens Z. and others. 

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

 gibbus Z. J. (/.■) hhneiiDionidae : 14. Various sp. (t) Scoliidae: 15. Tiphia 

 ruficornis Klg. [d) Sphegidae: 16. Oxybelus bipunctatus 01. j; 17. Pompilus 

 trivialis Dahlb. 5; 18. P. viaticus Z. (c) Tenthredinidae: 19. Athalia rosae Z. ; 

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



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



Knuth (F6hr)(' Weit. Beob. u. 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: 

 I. Chrysotoxum festivum Z. B. Hymenoptera. (a) Apidae: 2. Andrena parvula 

 K. 5. (Ij) SpJicgidae: 3. C'eropales maculalus F. ; 4. Crabro brevis v. d. L. 5 and S. 

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

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

 Dodonaea, Ghent, vi, 1894, p. 2O9). 



1131. O. peucedanifolia Pollich.— 



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

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



1132. O. crocata L. — 



Visitors. — The follownig were recorded by the observers, and for the localities 

 stated. — 



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

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

 2 ho\er-flies (Syritta pipiens Z. and Syrphus ribesii Z..), skg. 



341. Aethusa L. 



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

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

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

 inwards. 



