460 MR. G. C. DRUCE ON THE 
Prof. Blytt kindly sent me specimens collected at Landers, 
the original station, and also some from the western alps of 
Norway which are practically identical with those from Ben 
Lawers. l 
The description of C. helvola, Blytt, in Fries, ‘ Bot. Notiser, 
1849, p. 58, as given in N. J. Andersson’s ‘ Cy peracee Scandinavie,’ 
p. 61 (1849), is as follows :—“ Spica composita, spiculis sub-quinis, 
linearibus, confertis (disticho-imbricatis), conformibus, terminali 
basi mascula; bracteis glumiformibus, brevissimis; fructibus 
ovato-oblongis, in rostrum compressum sub-bidentatum attenu- 
atis, plano-convexis, enervibus, squamas ovatas acutas æquanti- 
bus; foliis planiusculis. 
“ Radice, culmo, colore et habitu priori [C. microstachye] tam 
simillima, ut vix distinctum diceres; sed differt: radice densius 
cespitosa, foliis latioribus (1-14 lin.), planis, marg. demum 
subrevolutis, spicis omnibus :qualibus (terminali sc. ceteris 
non majori, lineari, nee ad maximam partem v. tota mascula) 
longioribus, excurvatis (in formam C. brizoidis), pallide fulvis. 
“ Haee planta memorabilis videtur, utpote locum in systemate 
C. microstachye optime indieans. Cum ea specie enim arctissime 
conjuncta, habitu tamen et characteribus singulis C. heleonastem, 
norvegicam, et vitilem quodammodo refert. A C. heleonaste 
foliis fructibusque ore distincte bidentulo terminatis, a C. norve- 
gica fructibus plano-convexis, rostratis, et a C. vitili squamis 
longioribus, fructibus levibus non bifidis &c diversa." 
It is figured in the * Flora Danica,’ Suppl. i. t. 32. 
In appearance our plant strongly resembles monta d 
of C. canescens, to which plant I consider it elosely allie r 
The chief differences are the darker and more cylindrical spike- 
lets, the longer glumes, and the more bluish-green foliage. 
Our lowland C. canescens has distinctly yellowish-green s 
The Scottish C. helvola has a different habit, for iustead ont 
upright growth of the lowland C. canescens, the stems "m 
outwards and are uniformly curved, in à manner somew is 
similar to fruiting C. pilulifera. The chief difference ; 
however, to be found in the perigynium, which 1n C. pns 
even in its montane forms, is distinctly ribbed, but 38 "lu ts 
or nerveless in the Ben Lawers and in the Scandinavian P of 
How far this is due to the immature or barren cO 
the fruit, I am unable to say. The texture of the Per saul 
when examined under a lens is somewhat different, the 
ne forms 
