LABIATAE 279 



2296. N. Mussini Spreng. (Loew, Ber. D. bot. Ges., Berlin, iv, 1886, 

 pp. 121-3.) — Loew describes the corolla-tube of this Oriental species as about 

 10 mm. long, and slightly broadened in three places. The stigmatic branches are 

 at first apposed, even when the anthers have dehisced. The style then elongates 

 slightly and the filaments curve sideways, so that a suitable visitor must touch the 

 now mature and diverging stigmatic branches, thus effecting crossing. 



Breitenbach (Kosmos, Stuttgart, xiv, 1884) found this species and N. melissaefolia 

 Lam. to be gynodimorphous in the Marburg and Gottingen Botanic Gardens. 



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



A. Diptera. Syrphidae: i. Syrphus luniger Mg., going from flower to flower, 

 po-dvg. B. Hymenoptera. Apidae: 2. Andrena dorsata Sm. j, po-cltg. ; 

 3. Anthidium manicatum L. 5 and S, skg. ; 4. Anthophora parietina F. $ and 5, do. ; 

 5. A. pilipes F. 5, skg. and po-cltg. ; 6. A. quadrimaculata F. 5, do. ; 7. Apis mellifica 

 L. 5, steadily skg. ; 8. Halictus nitidiusculus K. 5, po-cltg. ; 9. H. sexcinctus F. 5, 

 skg.; 10. H. sexnotatus K. $, po-dvg.; 11. Melecta armata Pz. 5, skg.; 12. Osmia 

 adunca Ltr. 5, skg. and po-cltg.; 13. O. aenea L. 5, do. ; 14. O. rufa L. 5, skg. 

 C. Lepidoptera. (a) Rhopalocera : 15. Pieris brassicae L., skg.; 16. Vanessa 

 album Z,, do. (fi) Sphingidae : 17. Ino statices £., skg. 



2297. N. melissaefolia Lam. — Loew (op. cit., iv, 1886, p. 123) states that 

 the flower mechanism of this South European species agrees with that of N. Mussini. 

 And vtde Breitenbach's observation under last species. 



Visitors. — Loew observed 6 bees in the Berlin Botanic Garden. — 



I. Anthidium manicatum Z. S, skg. ; 2. Anthophora furcata Pz. $, skg. and 

 po-cltg.; 3. A. parietina Z'. ?; 4. A. quadrimaculata F. 5, skg. and po-cltg.; 

 5. Bombus hortorum Z. 5, skg. ; 6. Osmia rufa Z. 5, do. 



2298. N. macrantha Fisch. (Loew, op. cit., iv, 1886, pp. 124-5, ' Bliitenbiol. 

 Floristik,' p. 314.) — Loew has examined plants of this Siberian species cultivated in 

 the Berlin Botanic Garden. The blue flowers, marked with darker longitudinal 

 hnes, grow either horizontally or obliquely upwards. The corolla-tube is 20 mm. 

 long, and ventricose above, but narrows to a diameter of i mm. lower down. The 

 forwardly-directed lower lip is hairy at its base and projects beyond the upper one. 

 It may be assumed, therefore, that the flowers, like those of Betonica grandiflora, 

 occupy an intermediate position between the classes Hhb and L. The insect-visits 

 observed by Loew in the Berlin Botanic Garden agree with this. 



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



A. Diptera. Syrphidae: i. Pipiza chalybeata Mg., po-dvg.; 2. Sj'rphus 

 pyrastri Z., do. B. Hymenoptera. Apidae : 3. Anthidium manicatum Z. 5, 

 po-cltg. with its forelegs, and transferring it by means of the other legs to its ventral 

 brush, not skg. ; 4. Anthophora quadrimaculata F. 5, skg., and then flying to 

 N. melissaefolia ; 5. Bombus hortorum Z. 5 and 5, skg. legitimately ; 6. Psithyrus 

 vestalis Fourcr. $, skg. C. Lepidoptera. Rhopalocera : 7. Pieris brassicae Z., 

 skg. legitimately. 



2299. N. granatensis Boiss. — 



Visitors. — Loew observed three bees, all skg., in the Berhn Botanic Garden. — 



1. Anthidium manicatum Z. S ; 2. Anthophora quadrimaculata 7^ 5, po-cltg. ; 

 3. Bombus hortorum Z. 5. 



