NOTICES OF BOOKS. 29 



P. mucronatus is quoted as of " Roemer & Schultes Sys. Veg. 3, 517," 

 but in their third Mantissa they say that P. mucronatus is thought 

 by Mertens and Koch, in Rohlings Deutsch. Flora, to be only the 

 P. acuuiinatus of Schumacher ( P. lucens var. acuminatus of our Floras). 



ZannichelUa marina has four forms, two seemingly local ones, 

 none, however, corresponding with our names. Under Epipactis, no 

 mention is made of Babington's oralis, but E. atrorubens Hoffm. is 

 held to be the same as E. media Fries, Mant. 2, p. 54 ; and E. micro- 

 phi/lla, formerly held to be Danish, is considered not to be the true 

 plant. It is a pity these plants cannot be studied in combination 

 under cultivation, as there seems no finality to the opinions on 

 them. CJieno podium botryoides Sm. seems to be much commoner in 

 Denmark than with us — is it the true plant ? 



Will some one take up the British Atriplices and collate them 

 with the West European forms? I have seen nothing like A. 

 calotheca Fries (a plant with several forms, fairly plentiful on the 

 Danish coasts), from our British shores ; we may well hope it may 

 be found ; but these plants are almost neglected, from the difficulty 

 of naming them with any certainty ; not that we are the only ones 

 so situated — a well-known Swedish botanist writes me they are 

 equally at a loss with their forms. The two Valerians [sambucifolia 

 and Mikanii) are kept as separate species, the latter named '* V. 

 officinalis L.," a mode of naming which Mr. H. C. Watson so 

 strongly protested against, when applied to a segregated species. 

 Dr. Lange now puts his Lappa (Arctium) intermedia as a synonym 

 of Arctium nemorosa Lejeune ; surely we have two varieties ? if so, 

 Babington's plant may want a name. 



In Hieracia, we find none of the Backhousian species ; H. in- 

 tegrifolium Lange, Fl. Danica, t. 2661, is a remarkable plant; it 

 may be described as a very large, entire-leaved form of murorum. 

 IE commutatum Becker, Fl. Francofurt (1828), is given instead of 

 H. boreal e Fries. Thalictrum seems as difficult in Denmark as in 

 Britain ; we may hope before long to see some of our difficulties in 

 this genus elucidated, so far as regards our forms. Batrachium is 

 used for the Water-Eanunculi — peltatus being a species separate 

 from floribuudus. Here again I am afraid we shall have to face 

 some name-changing. Dr. Lange does not accept Viola persiccufolia 

 Schreb. as V. stagnina Kit. Lcpigonum is used instead of Spivgu- 

 laria. *' L. salinum Presl, Fl. Ccch. i^. 9d, nndev Spergularii — L. 

 salinum (and L. lejospennum) Kindberg, Monog. p. 23 and 36 " is a 

 long quotation to try and meet a difficulty. The account of the 

 Epilobia (many hybrids) is very full. Piosa canina forms are grouped 

 under R. canina L., Pi. Fieuteri Godet, P. dumetorum. Thuill, and P. 

 corilifolia Fries. P. neoburgcnsis Lange is considered a form between 

 the TomentosfP and Canina , but placed with the former. The list of tie 

 Rubi naturally follows Friderichsen's and Gelert's ' Danmark's og 

 Slesvig's Kubi' in theBotaniskTidsskrift. Fifty-two species are given. 



Altogether the book is a very interesting study, and a great 

 advance on the last edition. Copies can be bought of the publisher 

 (post-paid) at a considerably less price than in England. 



Aetht'r Bennett. 



