312 



ANGIOSPERMAE—DICOTYLEDONES 



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 Gersl. and 

 B. terrester L. 



Fig. 341. Prunella grandijiora, /acq. (from Herm. Miiller'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 2j). 



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



5, commencement of wider part of do. ; c and d, lateral folds and sacculations of do. ; e, side of upper lip ; 

 y, entrance of flower ; g and h, central and lateral lobes of lower lip ; g-r, style ; 11, nectary ; ov^ ovary ; 

 st^ stigma. 



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

 stated. — 



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

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

 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 

 Platycheirus peltatus Alg. 



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, 

 Ghent, iii, 1891, p. 337). 



2375. P. hyEsopifolia L. — 



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

 catum L. i, skg. 



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

 xxviii, 1870. 



