3is 



ANGIOSPERMAEDICOTYLEDONES 



wards, that it touches even the backs of smaller visitors, which are usually only 

 sprinkled with pollen by means of the lever apparatus. Automatic self-pollination is 

 excluded. 



The female flowers are smaller ; the style projects from the corolla ; the anthers 

 are white and sterile. They are (up to 20 %) gynomonoecious or gynodioecious. 



The flowers are frequently perforated by Bombus mastrucatus Gersi. and 

 B. terrester L. 



Fig. 341. Prunella grandiflora, Jacq. (from Herm. Mailer's ' Alpenblumen '). A. Flower in the 

 first (male) stage; seen directly from the front after removal of the calyx. B. Do., in the second (female) 

 stage, seen from the side. C. Do., after removal of the calyx and the front part of the corolla (x a|). 



D. Anthers and stigma of C. B. Nectary, ovary, and style (x 7). a, narrow base of corolla- tube ; 



3, commencement of wider part of do. ; cand d, lateral folds and sacculations of do. ; , side of apper lip; 

 J", entrance of flower ; g- and h, central and lateral lobes of lower lip ; gr, style ; , nectary ; ov, ovary ; 

 St, stigma. 



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

 stated. 



Herm. Miiller (Alps), 4 humble-bees and 2 Lepidoptera. Schletterer and von 

 Dalla Torre (Tyrol), 2 humble-bees Bombus hypnorum Z. 5, and B. pratorum Z. $. 

 MacLeod (Pyrenees), 2 humble-bees and a Lepidopterid (Bot. Jaarb. Dodonaea, 

 Ghent, iii, 1891, p. 337). Loew (Berlin Botanic Garden), the po-dvg. hover-fly 

 Piatycheirus peltatus Mg. 



2374. P. laciniata L. (=P. alba Pall). Schulz says that this species is 

 gynodioecious (at Bozen up to 5 %) with protandrous hermaphrodite flowers. 

 Occasional perforations by humble-bees were observed. 



Visitors. MacLeod (Pyrenees) observed 2 humble-bees (Bot. Jaarb. Dodonaea, j 

 Ghent, iii, 1891, p. 337). 



3375. P. hyssopifolia L. 



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

 catum Z. J, skg. 



Literature. Delpino, 'Ult. oss.,' p. 150; Hildebrand, Bot. Ztg., Leipzig, 

 xxviii, 1870. 



