68o ANGIOSPERMAE—DICOTYLEDONES 



1621. T. major Jacq. — 



Visitors. — Schiner saw the Muscid Trypeta falcata Scop, in Austria. 



493. Urospermum Scop. 



1622. U. Dalechampil F. W. Schmidt (=Tragopogon Dalechampii L.). — 

 Visitors. — Schletterer observed the bee Halictus calceatus Scop, at Pola. 



494. Scorzonera L. 



Florets yellow in colour, more rarely lilac or rose-red. Structure of the style as 

 in Tragopogon, and Kerner describes geitonogamy similar to what is found in that 

 genus, the stylar branches of the outer florets diverging and rolling back so as 

 to come into contact with the pollen of the inner ones. 



1623. S. humilis L. (Knuth, 'Bl. u. Insekt. a. d. nordfr. Ins.,' p. 97.) — 

 Should insect-visits fail, automatic self-pollination is possible by rolling back of 

 the stylar branches. 



Visitors. — I observed the following visitors on garden plants in the Kiel 

 Botanic Gardens (' Bloemenbiol. Bijdragen '). 



A. Coleoptera. Nilidulidae: i. Meligethes, freq. B. Diptera. {a) Muscidae : 

 2. Lucilia comica .F., po-dvg. (b) Syrphidae : 3. Eristalis tenax Z., po-dvg. ; 4. Syrphus 

 balteatus Deg., do. C. Hymenoptera. Apidae : 5. Halictus cylindricus F., skg. ; 

 6. Panurgus sp., po-cltg. D. Lepidoptera. Rhopalocera : 7. Pieris brassicae Z., 

 freq., skg. ; 8. P. rapae Z., do. 



1624. S. hispanica L. — 



Visitors. — Loew (Berlin Botanic Garden) observed a beetle (Anthaxia quadri- 

 punctata Z.) and a bee (Osmia fulviventris Fz. $, po-cltg.), on the var. glastifolia 

 Willd. 



1625. S. parviflora Jacq. — 



Visitors. — Loew (Berlin Botanic Garden) observed a hover-fly (Eristalis nemorum 

 Z.) and 2 bees (Halictus cylindricus F. 5, po-cltg., and Osmia fulviventris Pz. 5, do.). 



495. Hypochoeris L. 



Florets yellow, and otherwise resembling those of Scorzonera, except that the 

 stylar branches do not roll back so much. Kerner states that automatic self- 

 pollination is brought about by gradual elongation of the ligules, the pollen adhering 

 to which is thus brought into contact with the stigmas. 



1626. H. radicata L. (Sprengel, ' Entd. Geh.,' pp. 369-70 ; Kirchner, 'Flora 

 V. Stuttgart,' p. 739; Herm. Miiller, 'Fertilisation,' p. 356, ' Weit. Beob.,' Ill, 

 p. 97, ' Alpenblumen,' p. 469; Knuth, 'Bl. u. Insekt. a. d. nordfr. Ins.,' pp. 97, 

 161-2, 'Weit. Beob. il. Bl. u. Insekt. a. d. nordfr. Ins.,' p. 237; MacLeod, Bot. 

 Jaarb. Dodonaea, Ghent, iii, 1891, v, 1893; VerhoefT, ' Bl. u. Insekt. a. d. Ins. 

 Norderney ' ; Loew, ' Bliitenbiol. Floristik,' p. 394.) — In this species the heads spread 

 out in the forenoon in sunny weather to a diameter of 20—30 mm. Kirchner says 

 that they contain from 50 to over 100 florets, with ligules 9-12 mm. in length. The 



