68 The Botanical Gazette. [March, 
Diptera— Bombylidae: (14) Systoechus vulgaris Lw.; (15) 
Exoprosopa fasciata Mcq., ab. ‘ 
VERBENA URTICAEFOLIA L.— The flowers are white, much 
smaller than in the preceding, and are arranged in long loose 
spikes. Blooms from June 29 toSept 7, or later. On 8 days 
July 11—Aug. 29, I observed the following insects, all sucking‘— 
Hymenoptera — Apidae: (1) Apis mellifica L. 3; (2) Bombus 
americanorum F. ¢%; Andrenidae: (3) Augochlora pura Say 4; 
(4)Halictus ligatus Say 9; (5) H. confusus Sm. . 
Diptera — Empidae: (6) Empis clausa Rob. (MS.) ; Conopt- 
dae: (7) Stylogaster neglecta Will.; Syrphidae: (8) Meso 
grapta geminata Say; (9) Sphaerophoria cylindrica Say; (10) 
Syritta pipiens L. 
Lepidoptera — Rhopalocera: (11) Pieris protodice B.-L5 
(12) P. rapae L. 
PHRYMA LEpTosTacHya L,—The plant grows in damp 
woods afid is not very common. I have found it in bloom 
from July 10 to Sept. 3. The stem rises about 6 dm. high 
in length, its tube 5 mm., the lower lip 4 mm. in width. The 
lower wall of the corolla is strongly infolded forming a sort of 
as to exclude short tongues and to require long tongues? — 
touch the anthers and stigma. Small bees can force theif 
heads into the tubes by forcing down the palate. The flowel 
are strongly proterandrous, and are visited by Augochlora 
pura Say 6. | 
flowers are proterandrous with a homogamous sti 
Cross-fertilization between flowers of the same or of distif® 
plants may occur, and even self-pollination may occur by 
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