106 The Botanical Gazette. [March, 
tung 38. 1873. Sep. a. d. Berichten des naturw. med. Vereines zu Inns- 
bruck 2 and 72.—(2) Delpino, Ulteriori osservazioni sulla di- 
co regno vegetale Pt. 2. fasc. 2: 295. 1875. Estratto dagli Atti 
, 17-21. Sep. aus Pri 
Jahrbucher 22:—.1891. (Abstract in Just’s Bot. Jahresbericht 19’: 416.) 
visits is regularly self-fertile. Other species are homogamous 
and self-pollinating, as ZL. nummularia (Warming 10) and 
nemorum (Kerner 22). 
According to Bonnier (11) in L. vulgaris nectar is secreted 
by the ovary and escapes through stomata in the epidermis, 
but in most cases it is wanting, or exists in quantity imper- 
ceptible by ordinary means, though the visits of male bees 
seem to indicate its presence (3, 16, 23). The part played 
by the papilla in the attraction of insects (Kerner 22) is even 
more doubtful. I have seen no evidence of this in our Spe 
cies. The pollen is by far the most important, for by at 
tracting the females of M/acropis it has given rise to an inter- 
esting case of mutual economic correlation. Our species 9 
teir (23) and the European L. vulgaris (3, 16, 24, 27) and 
punctata (4) are visited almost exclusively by bees of this 
*Asa substitute for a more extended review it is proposed to give aD index 
‘to the literature of each genus, arranged chronologically, and it is hoped ie 
the index will contain at least the principal references. Use his been made 0 
the Bibliography compiled by D’Arcy W. Thompson, published in the transla- 
published up to ; of cLeod's continuation o son's list for the 
period 1833-1839, Bot. J o2k, 1399; of the abstracts by Miiller and Dalla 
in Just’s Bot. Jahresbericht and those nd others in the 
Centralblatt. I am under obligations to Pr ‘ lease for acezss to the 
iterature contained in the library of the Missouri Botanical Garden. ‘ 
_ Abstracts are not cited unless they contain information on the genus being 
indexed. nformation about contents of papers, etc., when given in the text, 
is not repeated in the index. 
