Plants New or Rare to Indiana. VII. 



Chas. C. Deam. 



All species reported in this paper are new to Indiana, nnless mention is 

 made to the contrary. Specimens of the species reported are deposited in 

 my herbarium under the numbers given. The Equisetum and Isoetes were 

 determined by L. S. Hopkins; the Gramineae bj' Agnes Chase; the Carices 

 by K. K. Mackenzie; the Juncus by H. H. Bartlett; the Rubus and Viola by 

 Ezra Brainerd; the Chamaesyce by C. F. Millspaugh; the determination of 

 the remainder was made or checked at the Gray Herbarium. 



Equisetum hyemale var. inlerniedium A. A. Eaton. 



Lake County, July 28, 1907. No. 2,349. Border of a slough near Pine. 



Isoetes Braunii Durieu. 



Crawford County, October 12, 1916. No. 22,385. In a small pond on 

 the north side of the road about one mile east of Pilot Knob hill. The pond 

 is usually filled with water, but was dry when the specimen was taken, which 

 was at an unusually dry time. It was associated with young plants of Eleo- 

 charis from which it was not easily distinguished. The specimens were 

 determined by L. S. Hospkins, and his notes are given. 



Number of plants examined, 3. 



Number of leaves per plant, 10, 10, 10, 11, 16, 16, 16, 17. 



Average number of leaves per plant, 13. 



Length of leaves up to 20cm. : average about 12 cm. 



Color of leaves, green. 



Peripheral bundles none. Stomata abundant. Trunk distinctly bilobed. 



Macrospores fairly uniform in size and shape, 486 to 504 microns. 



Microspores 24, 26, 28 microns. 



The plants were so covered with mud that it was impossible to get clean 

 macrospores for measurement. The fruiting leaves, i. e. the ones of this 

 season's growth have been pretty well detached from the parent plants while 

 the leaves retained are those which will bear the next season'b fruit. Never- 

 theless I feel pretty sure the determination is correct. It was from the de- 

 tached leaves that the spores were secured for measurement. 



Isoetes foveolata A. A. Eaton. 



Harrison County, June 25, 19; 6. No. 20,467. Pound in a low plae-- io a 

 woods four miles south and one mile east of Palynu-a. The colony was about 

 three feet wide and twenty-five feet long; and was located in an old wagon 

 road through the woods. The plants formed a carpet of green. In wet seasons 

 the water would course over the colony, and the place was only moist at 

 this time which was a rather dry time. The nearby trees were Liquidamber; 



(315J 



