2B2 



The only reference I can find upon the development of the 

 prothallium of Azol/a is an article of Berggren's,* the original of 

 which I have not seen. From a reference to this in Luerssen s 

 Handbook of Systematic Botany,t it appears that Berggren finds 

 the young female prothaUium to be composed of primordial cells. 

 Nothing is said about the male prothallium. 



In the article on the development of spermatozoids| the author 

 had occasion to describe the male prothallium and antheridium of 

 Salvinia nataiis. The prothallium consists of a relatively large 

 basal cell and an antheridium which differs widely in structure 

 from those of the Marsiliace(E, especially in the small number 

 of spermatozoids, only eight being developed from each micro- 

 spore. 



Where we are to look for the nearest living allies of the 

 SalviniacecE is at present difficult to say, and the matter must 

 remain in doubt until their own life-history, as well as that of 

 certain isosporous Filicinece, is more thoroughly understood. 



Conclusion. 



The conclusions reached from a study of the facts here pre- 

 sented are the following: That in the RIiizocarpecB are included 

 two groups which represent the last terms of two distinct series 

 of forms. Of these the Marsiliacece are in all probability derived 

 from forms closely related to living PolypodiacccF. The exact 

 position of the Salviniacece must remain for the present in doubt, 

 but they certainly should be removed from their present close 



MarsiliacecB 



Douglas H. Campbell. 



Onondaga Indian Names of Plants.§ 



To find appropriate names for plants or other things, shows 

 a sense of fitness, a power of brief description, not very common. 

 An Indian friend suggested giving me not only some Indian 

 names but their meanings, and a portion of the result is embodied 



♦Berggren. " Forengaeiide middelaude om ulvecklingen af prothalliet och 

 embryot hos Azolla," Botaniska Notiser, 1876, p. 177. 

 f I. c. X\. z. 



§ Read before the meeting of the Botanical Club of the A. A. A. S., at Cleve- 

 land, Ohio, August i6th, 1888, 



