134 WEEDS AND WILD PLANTS 



ALGAE 



Spawn, weeds, and filth, a leprous scum, 



Made the running rivulet thick and dumb. SHELLEY. 



The earliest mention of an Alga living in the Garden is 

 that by Uffenbach in 1710 (p. 12), but we cannot be certain 

 what it was. It may have been the Goat Ball Conferva, 

 C. aegagropila L., balls of which, 2 in. in diameter, Baxter 

 used to pull out of a shaded pan of water much to the 

 astonishment of his visitors. It throve as it would have done 

 in its native meres. 



Gonium perforate occurred in abundance one year in the 

 Lily Tank during Professor Lawson's time (E. R. L. ex lit.), 

 and in 1894, the first year of the new tank, the water was 

 green with it. 



Algal growths in the tanks are very naturally regarded as 

 a nuisance, and the latter are subject to periodical cleanings, 

 which do not encourage their growth on a large scale. 



The local Algal Flora has never been worked at systemati- 

 cally, or the list would have been extended " to infinity." 



CHLOROPHYCEAE CHLOROPHYCEAE (cont,} 



Chara Diatoms 



Mougeotia Pinnularia 



Closterium Navicula 



Spirogyra Melosira 



Pediastrum etc. 



Cladophora CVANOPHYCEAE 



Gonium (occasional) Oscillatoria 



Pandorina Abundant in Green-houses 



Vaucheria Anabaena 



Scenedesmus Nostoc 



Gloeocapsa 



FUNGI" 



In 1889 the author found the Peach-coloured Bacterium, 

 B. rubescens, described by Ray Lankester in the " Quarterly 



