156 Trans. Acad. Sci. of St. Louis. 



The Himalayan P. emodi Wallr. resembles our species in a 

 general way. It expands from 4 to 5 c. m. and has six petals 

 and six stamens. The ovary is about 16 mm. long and bears 

 a large stigma with six irregular lobes. The stamens are only 

 10 mm. long, so that self-pollination can hardly occur except 

 as a result of irregular behavior on the part of the insect 

 visitors. 



Podophyllum peltatum L. — May Apple — The flower 

 stem rises from a creeping rootstock to an height of about 3 

 d. m. and is terminated by two peltate leaves, between which 

 is situated a single flower, which looks outwards and a little 

 downwards. The flower is white and expands from 5 to 9 

 c. m. The petals are six to nine and the stamens 12 to 18. 

 As a rule the anthers do not reach as far as the stigma, but 

 sometimes their tips touch its edge so as to effect spontaneous 

 self-pollination. 



The flower seems to be devoid of nectar. I have watched 

 it frequently, but have seldom seen it visited. A single hive- 

 bee, Apis mellifica L. £, was observed collecting the pollen, 

 but it is not a native insect. Two bumble-bees, Bombus 

 americanorum F. § and B. separatus Or. 5, probed about the 

 bases of the filaments as if trying to find nectar, but did not 

 try to collect the pollen. Another long-tongued bee, 

 Synhalonia frater Cr. ^, also sought for nectar. 



The pollen protecting arrangements mentioned by Kerner 

 (2) I think are quite imaginary. 



The plant is common and blooms from April 26th to 

 May 19th. 



On the literature of Podophyllum see : — 



(l) Loew, Bliithenbiologische Beitrage I. Pringsheira's Jahrbucher 

 22:452-3 (8-9). 1891. P. emodi, peltatum.— (2) Kerner, Pflanzenleben 2:126. 

 1891. (Just 17':529.) 



Solea concolor Ging. — Green Violet — The plant is rare 

 in my neighborhood, there being, as far as I have observed, 

 but one station for it. It grows in woods, in somewhat shady 

 situations, and is the latest of the family to bloom, its season 

 being from April 30 to May 30. The stems grow several 

 decimetres high and bear small greenish flowers, which are 



