LABI AT AE 299 



I. Anthidium manicatum L. $ and 5 ; 2. Bombus lapidarius L. 5 ; 3. Megachile 

 fasciata Sm. S. 



2337. S. lanata Jacq. 



Visitors. Loew (Berlin Botanic Garden) observed 5 bees, skg. 



I. Anthidium manicatum L. S and 5 ; 2. Bombus terrester Z. 5; 3. Coelioxys 

 rufescens Lep. 5 ; 4. Megachile fasciata Sm. $ ; 5. M. willughbiella K. t,. 



2338. S. longespicata Boiss. et Kotschy. 



Visitors. Loew (Berlin Botanic Garden) observed 2 bees, skg. Anthidium 

 manicatum Z. 5, and Bombus agrorum F. S. 



2339. S. ramosissima Rochel. 



Visitors. Loew (Berlin Botanic Garden) observed the bee Anthidium mani- 

 catum Z. 5. 



2340. S. setifera C A. Mey. (=S. recta Z., according to the Index 

 Ketuensts). 



Visitors. As the last species. 



Fig. 337. Slachys Betonica, Benth. (after Herm. Muller). (i) Flower in the first (njale) stage, seen 

 from the side ( X aj). (2) Front part of do., more strongly magnified ( x 7). (3) Flower in the second 

 (female) stage, seen from the side (x 2J). (4) Front part of do., more strongly magnified. (5) Ovary 



((7Z') and nectary (). (X 7.) 



2341. S. Betonica Benth. (= Betonica officinalis Z.). (Herm. Mailer, * Fertilisa- 

 tion,' pp. 487-8, 'Weit. Beob.,' Ill, p. 50; Schulz, ' Beitrage,' II, pp. 197, 222; 

 Kirchner, 'Flora v. Stuttgart,' p. 629; Knuth, * Bloemenbiol. Bijdragen.') The 

 corolla-tube of the fragrant, purple flowers of this species is 7 mm. long, and is not 

 widened above, being so short that all our native humble-bees can suck all the nectar. 

 Its curved shape corresponds to that of a humble-bee's proboscis. Its lower part is 

 glabrous internally, but above that it is lined with erect hairs forming a nectar-cover. 

 The anthers dehisce soon after the flower opens, the forked end of the style being 

 situated between and behind the anthers of the two shorter stamens. The style then 

 elongates, and projects from between the two shorter stamens, automatic self- 



