1898] FLOWERS AND INSECTS _. 231 
Halictus ligatus Say ¢, s.; (13) Augochlora confusa Rob. 4, s.; (14) A. similis 
Rob. ¢,s.; (15) Colletes americanus Cr. 4, s. 
Lepidoptera — Rhopalocera: (16) Lycaena comyntas Gdt., freq.; (17) 
Thecla melinus Hbn.; (18) Colias philodice Gdt.; (19) Pamphila cernes 
Edw.—all s. 
LesPeDEzA cAPITATA Michx.— The flowers are white, pink 
streaks on the base of the banner forming pathfinders. The wings 
ad keel are depressed together and return to their position 
covering the stamens and pistil. The claw of the banner is so 
long that a proboscis 3-4 ™™ long is needed to reach the nectar. 
Its infolded edges guide the bee’s tongue to the opening in the 
stamen tube. 
The blooming season is Aug. 14-Sept. 11. On Aug. 14 and 
231 saw the flowers visited by two bees: Megachile brevis Say 
#,S.&c. p., and Calliopsis andreniformis Sm. 4, Ss. 
On the pollination of Lespedeza see: 
(1) Berkeley, Sterility — constitutional and organic. Gardener's Chron- 
ile 1: 36, 1855. Cleistogamy, both kinds of flowers simultaneous. Cit. by 
£ 
She : 1877) 1880.—(5) Foerste, Notes on structures adapted to cross- 
“ation. Bot. Gaz. 13 : 152. 1888. Z. violacea (Just 16* : 533). 
| Cornus L.— The flowers are perfect. According to Gray’s 
Nal ‘some foreign species are dioecious. In the Tyrol 
7% (12) failed to verify the observation of Hausmann that 
~ |S didecious or polygamous. From the condition of 
lee aPles of C. Canadensis after flowering Meehan (14) 
“that this species is monoecious and dioecious. 
: — have four petals, four stamens, a single style 
aus. or capitate stigma, the base of the style being 
“On by an epigynous nectar disk. 
.. group of Cornus consists of species whose flower clus- 
‘rounded by an involucre, which is usually white. In 
‘Ne petals are less conspicuous, and, at least in some cases, 
less 
€Xpanded 
Nded, so that they limit access to the nectar. 
