XITELLA MUCEONATA. 115 



localities near Grodstow (G. C. Draw, 1892) ; Norfolk, 

 W.. Little Ouse, near St. John's (G. R. R-T7., 1897) ; 

 Cambs, Roswell clay-pits, Ely (G. R. B.-W., 1895); 

 Beds, R, Ouse at Bedford (H. Davis, 1882), R. Ivel 

 near Sandy (/. Saunders, 1891). 



Ireland : Monaghan, Loughs Monalty and Naglack 

 (G. R. B.-W., 1901). 



First printed record : Babington 1 850 (from Borrer's 

 Sussex ffatherinaOj but collected more than 100 years 



O / ' t/ 



earlier by Dillenius, who evidently discriminated it 

 from the other then-known Charophytes. It was not 

 until 1897 that Dillenius's extremely interesting dis- 

 covery was brought to light by Mr. Gr. C. Druce, who 

 published the record in his ' Flora of Berkshire ' 

 p. 623). Mr. Druce in the 'Dillenian Herbaria' quotes 

 the following description, drawn up by Dillenius and 

 attached to the Isleworth specimens preserved in his 

 herbarium: Ghara flexilis, ramis et setis tricJwtomis. 

 In fossa secus viam quse a vico Thistleivortk (Isleworth, 

 Middlesex) versus Hounslow ducit Au gusto mense reperi 

 hanc speciem, Hippuridi setis bifurcis 0. G. vatde 

 similem, sed in eo diversam, quod setae ipsius terna 

 plerumgue, nonnunquam etiam, inferne videlicet, qua- 

 terna divisione terminarentur. Ramuli ejus terna 

 etiam, siibinde tamen bina tantum divisione a se invicem 

 secedunt, teiuies et pellucidi flexiles aqueo humore repleti, 

 quo evanescente collabuntur et Algse cujusdam instar 

 plani et compressi apparent, color e per exsiccationem 

 obscure veridl cum antea dilutius virentes essent. Setae 

 ad singula genicula sends plerumque observantur, in 

 quarum divisuris maxime summitatein versus grana 9 

 tanquam semina, sedent parva, ex rotundo acuminata. 

 Odore donabatur multo evidente, sane minime 

 foetido. Unde dubium videtur an hide eadem sit Chara 

 Florentina putlo-viridis, Comm. Ac. R. 8c. 9 An. 1719, 

 p. 18, n. 7. Equisetum fcetidum pullum aquis immer- 

 sum D. Mich. ibid, cujus specimine ab ipso auctore 

 transmisso, in tantum alias accedit, ut nulla fere inter 

 utramque differentia conspiciatur. Sed nostra ut dictum, 



