154 THE JOUEIN'AL OF BOTANY 



profusely illustrated with some 3000 small (but in most cases ex- 

 cellent) figures consisting of the parts most adapted to show the 

 differences. The value taken of the species is a moderate one in most 

 cases, the exceptions being 99 species of Taraxacum (74 named by 

 Dahlstedt) and 205 of Bosa. 



The history of the Swedish Flora from 1875, when Berlin pub- 

 lished at Stockliolm a very useful table showing the distribution from 

 Scania up to Swedish Lapland and North and South Norway is a 

 curious record of species making and unmaking. Berlin's list had 

 1 Taraxacum, 22 Riihi, 19 Hoses, and 108 Hieracia : in 1891 the 

 Lund and Upsala Societies issued a list with 5 Taraxacum, 163 Ruhi, 

 99 Koses, and 570 Hieracia : in 1907 the Lund Society's list had 

 550 Koses, 225 Ruhi, and 2000 Hieracia. In 1917 a second edition 

 of this had 227 Taraxacum and 71 hybrid Salices. Neuman's 

 Sveriges Flora (1904) had 16 Roses, 41 Ruhi, 7 Taraxacum, and 

 96 Hieracia. 



Taking the present Flora in its sequence, the Potamogetons by 

 Hagstrom naturally follow his work of 1918 ; for Sweden he gives 

 22 species with 18 hybrids — if this genus were taken up on the lines 

 of Taraxacum we should produce a good array of so-called species ! 

 There is certainly one element. The clean condition of the specimens 

 of the aquatic plants of the Swedish Flora is remarkable ; with the 

 most careful treatment of our specimens it is hard to produce an}^- 

 thing like the S2)ecimens issued in Tiselius's Swedish exsiccata of the 

 genus and the beautiful series I possess other than those from 

 Dr. Tiselius ; I suppose this results from the purity of the water and 

 the comparative absence of Algse. The Graminea? show a near 

 approach to our Flora so far as regards the value placed on species ; 

 as an example —Poa BaVourii Parn. is placed as a subsp. of P. glauca 

 Yahl. and an estimate of P. glauca may be found by the synonymy 

 (P. ccesia Sm., P. glauca Sm., P. aspera Gaud., P. RarnelUi Bab. 

 p.p.) ; under Festuca are Vulpia and Scleropoa : Zerna Panzer is 

 used for the Sclienoclorus Fr. part of Rromus. Calamagrostis is 

 retained, C. sfrigosa (Wahl.) being epigejos y neglecta — an identifica- 

 tion which I have contested in Trans. Bot. Soc. Edinb. xxvii. 307 

 (1919). JLoeleria has only glauca said gracilis. There are 90 species 

 of Car ex ; the illustrations here are very good. The author wisely 

 has C. salina Wahl. with one subspecies, and the remark that the 

 Swedish form is " var. kattegatensis (Fr.) Almq." ; he uses diversi- 

 color Crantz (1776) for Jlacca (1771) and glauca (1772). Under 

 C. Q^deri he has C. pulcliella Lonnr. (subsp.), this is a small form 

 of (Ederi and is British ; as a subspecies. He questions whether 

 C.Jiliformis L.= C. lasiocarpa Ehrh.. and uses C. Hudsonli, doubting 

 whether C. elata All. is the same. The list is very British, except of 

 course for the species we do not possess. He divides Juncus alpinus 

 into 4 species, giving figures of the fruits. 



Of the trees Lindman figures leaves, or half leaves, with their 

 venation ; this seems to be too definite, as leaves on one tree will vary 

 to any extent; he figures six forms of Ropulus and I think he who 

 tries to name by these will fail. Under Salix 24 species are given 



