316 
named some of his specimens “ C. biharica Simonk. = canescens x 
stellulata ; others as C. tetrastachya Trannst. = x super-ca/nescens, 
0. heloola (Blytt) Druce var.” I should name Mr. Burden’s 
specimens : 
X C. Cafischii Briigg. in Jahrb. Nat. Ges. Graub. xxiii — xxiv. 
p. 119 (1880). 
= x C. Biharica Simonk. lc., p. 548 (1886) = C. cancscens x 
stellulata = C. canescens x echinata. — A. Bennett. 
C. Hudsonii Ar. Benn. [590J (all from one tussock). Oughton 
Head, Hitchin, Herts., v.c. 20, May 27 and June 27, 1924. For 
notes see W.E.C.R. 1921, 187. Utricles elliptic, hardly acute, 
and only very shortly beaked, shortly stipitate. Nut “roundly 
obovoid, shortly beaked” (as Bab.). Leaves 18 in. or more. 
Lower sheaths leafless, pointed, and shining brown (1 as those of 
C. Goodenowii never are). — J.E.L. I think I can add nothing to 
note in Rep. 1921-2, 188. It is certainly not the normal form 
of C. Hudsonii . — C.E.S. 
1 C. Hudsonii A. Bennett ( C . stricta Good.). Ref. No. 226. 
Wet swamp near Tickenham, N. Somerset, May 25 and July 8, 
1924. C. Goodenowii and 1 C. acida, and other species in the 
same swamp, thick with sedges.— H. S. Thompson. Not C. 
Hudsonii to my eye; the bulk appears to be C. acutiformis. If 
there are hybrids amongst them these are best determined on the 
spot, amid their parents. — C.E.S. All these 23 sheets are C. 
acutiformis Ehrh. It is curious, but I have seen this in many 
Scotch Herbaria named “ C acuta.” One must admit there is at 
times “quite a look of it,” and acutiformis sometimes has two 
styles ; but the beak of the fruit and the striation of it are quite 
conclusive. — A. Bennett. 
1 C. gracilis Curt. Ref. No. 228. Wet swamp near Ticken- 
ham, N. Somerset, May 25, 1924. Is this the same as No. 226 1 
The foliage may be mixed, and I do not understand the group. — 
H. S. Thompson. A mixture here. None gracilis. Four sheets 
C. acutiformis , two sheets C. riparia, and one with both species. 
I have separated them and labelled them. — C.E S. I regret the 
trouble given over these last two lots. — H.S.T. 
C. Goodenowii x Hudsonii 1 Ref. No. 222. Wet swamp near 
Tickenham, N. Somerset, May 25, 1924. Both species growing 
quite near. — H. S. Thompson. Mr. Thompson may be right as 
to this — collectors have by far the best opportunities to discern 
hybrids — but the sheaths, fruit, shape, etc., are clearly Hudsonii. 
The spikes are shorter, however, and remind one of Goodenowii. 
