194 ON CHARA ALOPECUROIDES AS A NATIVE OF BRITAIN. 
view, for C. crinita ; but heré the stem consists of a single tube, where- 
as there (in C. crinita) we find an outer coat of smaller tubes. C. spi- 
nosa, Amici, is stated to have “ bracteis numerosissimis,” which is all 
that I know about it; neither, apparently, was Wallman better in- 
formed. C. macropogon, A. Br., a plant of New Holland, is the only 
other species included in the same section, Monosiphonice barbate ; 
but it has * nuculis in fundo verticilli congestis," and exceedingly long 
involucral spines “ramenta fere sequantibus, retrorsum adpressis." 
Thus our plant seems clearly different from all its near allies. 
We know for certain that the plant found in the Isle of Wight is 
really the C. alopecuroides, Del., A. Br., by comparing it carefully with 
the authentic specimen sent by M. J. Gay (which also proves that it 
is the C. Pouzolsii, Gay, ms.), also with one in my own collection, 
given to me by the late Professor Henslow, as sent to him by Dr. 
A. Braun. These specimens are both from the neighbourhood of 
Montpellier. The same species has been found in Italy, Corsica, at 
Hyaléérne, on the coast of Norway, as far north as lat. 70°, and at 
Ulriksholms Fjord, Fyer, Denmark, from whence I possess beautiful 
specimens given to me by Fries in his ‘Herbarium Normale,’ XV. 
n. 99 i 
In addition to this evidence of the identity of our plant with that 
described by Braun and Wallman, we have the evidence of my highly 
valued friend J. Gay, contained in a letter recently addressed by him 
to Mr. More. He says: “ Votre plante de l'ile de Wight me paraît du 
reste parfaitement semblable à la mienne des cótes frangaises de la 
Méditerranée, et M. Durieu de Maisonneuve, à qui je l'ai fait voi et 
qui est beaucoup plus compétent que moi en cette matière, M. D 
dis-je, en juge absolument de même.” He adds that he desires 
“ confirmer pleinement le jugement que M. Babington et vous ave A 
déjà porté sur la plante dont il s’agit.” ; 
It remains only to point out the characters of the plant, which will 
be done upon a plan similar to that followed in the account of the — 
other British species contained in my * Manual,’ ed. 5. Its discovery 
adds a new section of the genus to our flora. 
Cnana, Agardh. 
3 
Sect. 1. Monostenontcm. Stems composed of a single tube, — 
smooth, unarmed, flexible, diaphanous.— Barbate.  Involucral spines - 
