630 ANGIOSPERMAE—DICOTYLEDONES 



sexnotatus K. $, do. ; 12. Heriades truncorum L. S skg., 5 po-cltg. ; 13. Megachile 

 centuncularis L. 4, skg.; 14. Osmia fulviventris Pz. 5, po-cltg.; 15. Prosopis 

 armillata Nyl. } and S, skg.; 16. P. communis Nyl. S, do.; 17. Sphecodes 

 ephippius Z. 5, do.; 18. S. gibbus L. 5, do.; 19. Stelis aterrima Pz. 5, do.; 

 20. S. phaeoptera A'. 5, do. {b) Tenihredinidae: 21. Cephus sp. S. D. Lepidoptera. 

 Rhopalocera: 22. Pieris brassicae Z., skg. 



i486. D. caucasicum Bieb. — 



Visitors. — Loew observed the following in the Berlin Botanic Garden. — 



A. Coleoptera. (a) CoccinelUdae: i. Coccinella bipunctataZ. (V) Nitidulidae : 

 2. Meligethes sp. B. Diptera. Syrphidae : 3. Eristalis aeneus Scop. C. Hymeno- 

 ptera. Apidae : 4. Andrena nitida Fourcr. 5, skg. and po-cltg. ; 5. Apis mellifica 

 Z. 5, skg. and po-cltg. ; 6. Halictus nitidiusculus K. 5, po-cltg. 



1487. D. plantagineum L. — 



Visitors. — Loew observed a Dermestid (Anthrenus scrophulariae Z.), a bee 

 (Halictus leucozonius Schr. 5, po-cltg.), and a Sphegid (Cerceris variabilis Schr^ 

 5) in the Berlin Botanic Garden. 



459. Aronicum Neck. 



The tip of the style in disk-florets closely, beset externally with long pointed 

 sweeping-hairs, internally (including the swollen margin) with stigmatic papillae. 

 Style of ray-florets similar, but sweeping-hairs shorter. 



1488. A. Clusii Koch (including A. glaciale Reichb.). (Herm. MilUer. ' Alpen- 

 blumen,' pp. 437-8.) — This species is gynomonoecious with protandrous hermaphrodite 

 florets. The orange-yellow heads possess a disk 14-20 mm. in diameter, which is 

 extended to 40-60 mm. by the ray-florets. 



In the variety A. glaciale Reichb. (=the species Doronicum glaciale Nym.\ 

 according to Kerner ('Nat. Hist. PI.,' Eng. Ed. i, II, p. 322), the receptive stigmas 

 of the outer florets are brought into the line of fall of the pollen of the inner ones by 

 gradual elevation of the common receptacle, so that automatic geitonogomy is eflfected. 

 Kerner adds that the stigmas of the ray-florets are mature several days before the 

 hermaphrodite florets of the same head open. 



Visitors. — Herm. Miiller observed 1 1 flies, a bee, and 5 Lepidoptera. 



1489. A. scorpioides DC. — Kerner says that this species behaves like the last 

 in regard to geitonogamy. 



Visitors. — MacLeod (Pyrenees) observed a Lepidopterid and 2 Muscids (Bol. 

 Jaarb. Dodonaea, Ghent, iii, 1891, p. 360). 



460. Ligularia Cass. 



1490. L. macrophylla DC. ( = Senecio Ledebourii Sch. Bip.). — 



Visitors. — Loew observed the bee Megachile centuncularis Z. 5, po-cltg., in the 

 Berlin Botanic Garden. 



1491. L. speciosa Fisch. et Mey. (=Senecio Ligularia Hook.). — 



Visitors. — Loew observed the bee Coelioxys elongata Lep. 5, skg., in the Berlin 

 Botanic Garden. 



