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habit of spore production, the author thinks it may be related to 
the Thelephoriacce. 
The author finally exhibited a disease of pear trees and fruit, 
which resembled that of the orange previously spoken of, which 
was called to his attention by Prof. Rolfs. It differs from the 
orange disease in its mode of spore formation, and in the color 
of the strands which are found on the twigs and fruit. Dis- 
cussed by Kellerman, who inquired as to the time of fruiting of 
the ascigerous form of the fungus on Cenchrus, bringing out the 
fact that this form was mature only after the first year, as in 
Claviceps. 
6. “Anatomy as a Special Department of Botany,” by Dr. 
Emily L. Gregory.* 
FRIDAY, AUGUST IQTH. 
The morning meeting was called to order, and the following 
paper read: 
7. “Observations upon Certain Species of Asclepiadacee as 
Insect Traps,” by Thomas Morong. 
The paper was discussed by Dr. Beal, who stated that he had 
found large numbers of mosquitoes caught by the flowers of Apo- 
cynum androsemtfolium ,; and by Mr. Fairchild, who called atten- 
tion to the fact that the two pollen masses of the pollinia of several 
of our common asclepiads which, when first withdrawn from their 
cavities beside the stigmatic surface of the flower, are lying in one 
plane with edges to each other, when drying, close like the leaves 
of a book; he suggested this might be an adaptation to aid in 
bringing about its insertion into the slit of the stigmatic cavity of 
another flower. 
Dr. Morong exhibited at this time a species of Mymphea, ref- 
erence to which he had previously made in the “ Botanical Ga- 
zette.” The species he had named Nuphar rubrodiscum and be- 
lieved it to be a fertile hybrid of W. Kalmianum and N. advena. 
He referred to the publication of the species as a variety of WV. 
advena in the last edition of Gray’s Manual, but maintained that 
it is a distinct species, but if considered a variety, he suggests . 
is most nearly related to V. Kalmianum. 
* To be published subsequently. 
