SHORT NOTES 295 



PituXELLA LACINIATA IN Kent. Mr. W. U. Slicrrin has kindly 

 given me a specimen of the above, which he collected near Heme JUy 

 in 1909. This appears to be an addition to v.c. 15. P. laciniata is 

 now on record for the following nine comities : — Somerset N. ! (v.c. G), 

 Hants S. (v.c. 11), Sussex E. ! (v.c. 14), Kent E. ! (v.c. 15), Sm-rej ! 

 (v.c. 17), Herts (v.c. 20), Berks ! (v.c. 22), Cambridge ! (v.c. 29), and 

 Gloucester E. (v.c. 33). -C. E. Salmon. 



Satl'eeja MONTANA L. IN Hants (p. 25). The occurrence of 

 this plant at Beaulieu Abbey must have been surely well-known to 

 botanists of a preceding generation. I have a sheet of specimens, 

 duly named, collected by the late A. Grugeon at Beaulieu Abbey in 

 Aug. 1873.— C. E. Beitton. 



Ateiplex calotheca Fries " A. hastafa L. Wg." teste Lindman, 

 Svensk Fanerogamtlora, p. 228 (1918). Mr. Lillie gathered this 

 growing with A. arenaria Woods on the east coast of Caithness in 

 Sept. 1918. These are the first certain specimens 1 have seen from 

 Scotland. — Aetuue Bennett. 



PoA omeiensis (p. 25). In creating this name, Dr. Tiendle had 

 overlooked his previous correction (Journ. Bot. 1908, 173) where he 

 had substituted P. szechuensis for his P. gracillima. P. omeiensis 

 is thus an abortive name. 



EEVIEWS. 



Iceland Botany. 



The Botany of Iceland. Vol. i. j^t. iS. The Lichen Flora and 

 Lichen Vegetation of Iceland. By Olaf Gall0e. Vol. ii. pt. 1. 

 Freshwater Bialoms. By Eenst Oesteup. C(jpenhagen, 1919- 

 1920. 



Gall0e has divided his study of Iceland lichens into five sections : — 

 (1) A list of Iceland, lichens ; (2) a discussion of the means of pro- 

 pagation ; (3) the biology of lichens; (4) Ecology; and (5) the 

 vertical distribution. It is the ecology of plants in an island subject 

 to wind-storms and to extreme cold that offers most points of interest. 

 The list of lichens gives us the subject-matter : it contains 285 

 species, among which the lichens of warmer regions and those that 

 grow on trees are poorly re])resented : crustaceous rock-lichens and soil- 

 lichens predominate. The author has added to each a statement of 

 its presence or absence in Great Britain on the one hand and Green- 

 land on the other. The large majority are to be found in our 

 islands, though Dr. Gallic has credited us with species the record or 

 which is unknown to our floras ; and, at the same tiuie, he has failed 

 to note some of our quite common species. He is also somewhat 

 inconsistent in his citation of authorities, giving sometimes only 

 the earliest, as in " Coniocyhe furfuracea L.," at others carefully 

 relegating that authority to the usual bracketted position as 

 '' Cladonia coccifera (L.) Willd." 



In the discussion on Ecologv the " A:ssociations " are divided into 



