NEW PUBLICATIONS. 159 
Helianthemum vineale, Pers. Helianthemum canum. 
Polygala ciliata, Lebel. Polygala vulgaris. 
Alsine laxa, Jord. Alsine tenuifolia. 
A. hybrida, Vill. Ditto. 
Hypericum microphyllum, Jord. Hypericum perforatum. 
Geranium modestum, Jord. Geranium Robertianum. 
The figures of the “critical” groups included in the subclass, as for 
instance, of the Batrachoid Ranunculi, the Violas of the canina group, 
the Thlaspis of the alpestre group, with which in almost every instance 
great pains seems to have been taken, will materially aid in the identifica- 
tion of the plants. Judging from the specimens we have seen of the 
Cambridgeshire Thalictrum, which is figured under the name of sazatile, 
the peduncles are sometimes as cernuous as in the other British species, 
and the secondary bracts not invariably entire, so that Wallroth’s name 
of collinum would appear to be the one that is properly applicable. Of 
a tall-branched Thalictrum, from the Flintshire station, which Mr. 
Syme mentions, we have seen an extensive series of specimens, and the 
carpels are clearly gibbous, and in other respects the plant agrees with 
r. Syme's minus var. montanum. In authentic specimens. of Boreau's 
Ranunculus rectus, the rootstock is quite oblique, and the beak not 
nearly half as long as the body of the carpel. In Mr. Syme's account 
of Papaver Lecogii, a misprint of “length” instead of “ breadth ” seri- 
ously mars the description. As regards the colour of the sap, authors 
are by no means in accordance. M. Lamotte, the original describer, 
attributes to P. Lecogii sap which turns yellow upon exposure. 
Boreau says nothing about the sap. - M. Crepin says that P. Lecogii 
is the only one of the four segregates that has yellow sap, and upon 
this Mr. Babington and Mr. Syme ground their nomenclature. But 
M. Reuter (Cat. Plant. Genev. 2 edit. p. 9) tells us that P. collinum 
has yellow sap, and describes the sap of P. Lecogit, to which he agrees 
with Boreau in attributing bipinnate stem-leaves, capsule attenuated 
at the base, and stigmatie rays reaching to the edge of the disk, as 
greenish at first, and becoming white upon exposure. Of Violas of the 
odorata group, M. Jordan describes eighteen species, inclusive of hirta 
and odorata, most of them apparently intermediate in character between 
our well-known British representatives of the two names. Geranium 
purpureum, E. B. 8. 2648, Mr. Syme identifies with G. minutiflorum 
of Jordan. Erodium pilosum, of Jordan and Boreau, the Geranium 
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