The Scottish Naturalist. 325 



greatly elongate (sometimes more than 10 inches long). 

 Growing in deep water — 1 2 feet or more — densely csespitose, 

 and never flowering : or in shallower water, and flowering. 



The comparative length of the filaments and anthers depends 

 upon the age of the flower, but it is possible that the shape of the 

 anthers may differ in the varieties. 

 Scirpus sylvaticus L. 



Var. dissitijiorus, Sond. Spikelets mostly solitary, and, except 

 those in the axils of the branches, on pedicels at least as long as 

 the spikelet. Mixed with the ordinary form, but rare. I am 

 indebted to Mr. A. Bennett for discovering that this variety had 

 already been named. 

 Oarex vulpina L. 



Specimens from an inland wood have paler glumes, more 

 foliaceous bracts, and less densely serrated fruit than the type, and 

 may be the var. nemorosa Rebent. 

 Oarex vulgaris Fr. 



Var. melcena, Wimm. Very rare. 



Oarex atrata L. 



It is noteworthy that in cultivation this species shows some 

 remarkable features. It flowers twice in the course of the summer. 

 The inflorescences of the first period of flowering are normal, though 

 the plant is much larger than in the wild state, having stems 2 feet 

 in length. The inflorescence of the second period is quite abnor- 

 mal, the spikelets being more or less remote from each other, so 

 that the head is 3 or 4 inches long ; the lower spikelets have long 

 peduncles ; the lower flowers of the lower spikelets seem to be ab- 

 ortive, hence the spikelet is narrower below. In one wild speci men 

 I find the lowest spikelet inserted an inch or more below the others. 

 Oarex aquatilis, Whlnb. 



Var. epigeios, Lsest. (C. epigeios, Htn.) 



This, which in appearance is somewhat intermediate between C. 

 aquatilis and C. vulgaris, grows very sparingly in a marsh near Perth. 

 It seems to be a late flowerer, as specimens were in good condition 

 when other Carices were past their best. As regards the determination 

 of this variety, Dr. Almquist, to whom Mr. Bennett sent specimens 

 on my behalf, returns it as a form. Looking at the distribution of 

 the variety (or sub-species, as Nyman considers it) — mountain 

 districts of North Sweden, North Norway, and Lapland — its 

 occurrence in a lowland locality in Scotland is somewhat strange. 



