2 The Irish Naturalist, January, 



mens. I found it growing at the same spot and in the same 

 luxuriant abundance, and this time made an attempt to 

 transfer the plant direct from the water to the drying- 

 sheets on the bank of the lake ; but even so it became rapidly 

 flaccid and proved impossible of disentanglement. I pre- 

 served a certain amount in formalin, and this has made it 

 possible to examine the plant under more advantageous 

 conditions than if dried and subsequently treated with 

 reagents. 



Mr. Groves, who has carefully examined the plant, 

 agrees that its distinctive character justifies its receiving 

 specific rank, and we have drawn up the following descrip- 

 tion. 



One of its main characteristics is the very restricted 

 number of branchlets, and this has suggested to us its name. 



Nitella spanioclema Groves & Bullock- Webster, sp. nov. 



Monoecia, statura cir. 30-35 cm., caulis tenuis, internodi 

 plerumque vel aequantes longissimis ramulis vel eosdem 

 paulim superantes. 



Rami saepe usque ad tres ex eodem nodo orientes, 1-2 

 in loco ramulorum suppressorum, ut videtur, saepe abbreviati 

 et inchoati et, quum quidem elongati, non raro verticillos 

 rudiment arios proferentes. 



Ramuli pauci, plerumque 2-3 tantum in utroque verti- 

 cello, normaliter simpliciter-furcati sed aliquando duplicato- 

 furcati. 



Later ales radii secundarii singular es, perspicue breviores 

 radiis mediis, saepe inchoati, brevissimi et inperspicui apud 

 nodos antheridia proferentes. 



Radii secundarii unicellulati, apicibus variantibus a 

 forma acuminata ad formam vel rotunde-acutam vel 

 obtuse-mucronatam. 



Opgonia et antheridia vel ad eundem nodum vel ad 

 diversos nodos producta. Oogonia vel singularia vel 2-3 

 aggregata, 800-850 n longa, 640-680 /x lata. 



Celhilae spirales 7 convolutiones exhibentes et versus 

 apices tumifacientes, coronula decidua, c. 60 /x alta, c. 80 

 fx lata. 



