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BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL. 5, NO. 1. 
Opposite filament of the inner row. Corresponding projections of 
the upper margin of the ovary surround these filaments from 
within, and in this manner tubes are formed leading down to the 
nectar between the base of these filaments and the ovary. There 
is a rich supply of nectar coming from the septal glands. The 
stamens with their pinkish filaments have, when fully developed, 
a length of 12 mm., one-half of which extends outside of the 
perianth. One by one they grow in length and empty their pollen, 
those of the. inner row in advance of the others. In this respect 
the specimens of our surroundings do not agree with those studied 
by F^oerste who states that the outer stamens are the first to 
dehisce. In the first stage of these proterandrous flowers when 
the three inner stamens have reached their entire length the stig- 
matic region of the style is situated in the mouth of the flower. 
By the time the outer stamens have shed their pollen the style 
has become as long as the anthers, and the stigma has reached 
maturity. This represents the second or female stage. Proter- 
andry is so distinct in this species of Allium, as to render cross- 
pollination a certainty. The faintly sweet-scented flowers are 
rather attractive to bees as shown by the following list : 
A. Hymenoptera 
Apid?e : ( i) Apis mellifera L. worker, s. ; (2) Bomhus pennsyl- 
vanicus De G. female and worker, s. ; (3) B. virginicus Oliv. 
worker, s. ; (4) B. ternarius Say, female and worker, s. ; (5) 
Clisodon terminalis Cr. female, s. ; (6) Anfhophora zvalshii Cr. 
female, s. ; (7) Megachile infragilis Cr. female, s. ; Andrenidse: 
(8) Halictus forbesii Rob. female, s. and c. p.; (9) H. zephyrus 
Sm. female, c. p.; (to) H. albipennis Rob. female, c. p.; (11) 
H. sparsus Rob. female, c. p. ; (12) Colletes eulophi Rob. female, s. 
B. Diptera 
Syrphidse: (13) Tropidia quadrata Say, s. 
C. Lepidoptera 
Rhopalocera: (14) Pontia rapw L, s. 
Lilium Canadense L. Wild yellow Lily. 
The blooming time is from July 2 to 28. On the outside the 
nodding flowers are red with a yellowish tinge while the inner sur- 
face is mainly yellow with numerous small brown spots. Shortly 
