66 The Botanical Gazette. [March, 
upwards. The stamens stand so erect that at first I won- 
dered how the bee would come in contact with them. I also 
wondered why the anther cells are at right angles to each 
other. . Asa rule, only two flowers are in bloom in the um- 
bel-like cluster at atime. The three lobes of the lower lip, 
which we have observed are strongly divergent, are curved 
upward, so that it is most convenient for the bee to enter be- 
tween the middle and one of the lateral lobes. In this way 
it isapt to brush the vertical face of the inner anther-cell. 
To reach the other flower, the bee crawls directly upwards 
and approaches it from above. In crawling up out of ont 
flower and down into the other the bee is likely to touch the 
horizontal faces of the outer anther-cells. 
The corolla tube is about 5 mm. long, so that the nectat 
can be obtained by tongues of medium length. The flower 
is evidently adapted to bees, but is often visited by flies and 
butterflies. I have found it in bloom from June 23 to Aug: 
24. On July 5 and g I observed the following visitors:— 
Hymenoptera—A pidae: (1) Apis mellifica L. %, s.,ab.; (2) 
Bombus virginicus Oliv. , s.; (3) Melissodes palustris Rob. é 
s., ab.; (4) M. bimaculata Lep. 29, s., ab.; (5) Ceratina 
dupla Say 9, s.; (6) Epeolus lunatus Say 649, $.; Andre 
ntdae: (7) Agapostemon nigricornis F. 9, s.;- (8) A- radiatus 
Say 69, s.; (9) Augochlora pura Say 9, s. and c. P.» 4) 
(10) Halictus lerouxii eps 39, Ss. abis H. ligat 
Say 49, s.; (12) H. fasciatus Nyl. 49, s.; (13) H. pilosus Sm? 
c. p.; (14) H. confusus Sm. g, c. p., ab. oh 
Diptera—Syrphidae: (15) Allograpta obliqua Say, f. P» 
16) Mesograpta marginata Say, f. p.; (17) Spharophor 
cylindrica Say, f. p.; (18) Eristalis tenax L., s. and f. P+ (19) 
Helophilus laetus Lw., f. p.; (20) Tropidia quadrata Say $1 
freq. ; (21) Syritta pipiens L., f. p. = 
Lepidoptera — Rhopalocera: (22) Pieris rapae Li; (23) 
‘Phyciodes nycteis D.-H.; (24) Lycaena pseudargiolus B.-L} 
Se Pamphila metacomet Harr.; (26) Pholisora catullus F-—~ : 
aise? 
