324 THE JOURNAL OF JJOTANY 



tlie names whose position has often been misunderstood — Pfeiffer in 

 his Nomenclator hoianicus quotes them as genera, and Mr. O. A. 

 Farwell has lately endeavoured to establish their claim to that rank. 

 The absurdity of this was shown in Journ. Bot. 1920, p. 278, and it 

 is clear that Ehrhart had no such intention ; he sometimes takes the 

 accepted name— e. g. Littorella or adopts others of his own invention 

 — e. g. Decodon for Linncea horealis. He did not, however, persist in 

 this method, which does not appear in any other of the Exsiccatse, 

 but he did not hesitate to bestow new names upon species already 

 named and described — e.g.ioY his Polygonum intermedium (Beitr. 

 vi. 112) he cites as a synonym P. minus, to which his plant has been 

 generally referred by later authors, and (Beitr. vii. IGl) he renames 

 Geranium rutilans, the plant that had been described as G. palmatum 

 Cav. and G, anemonefolium L'Her., which names he cites in 

 synonymy. 



Two decades of the Fhgfophylacium appeared quarterly — the first 

 and second on Jan. 1, 1780, and two others on the first of April, 

 July, and October: the cost of each couple was fixed at a gulden. 

 Each decade has a dedication to some distinguished deceased botanist : 

 the first runs : 



" CINERIBUS 



CAEOLI A LINNE 



PRAECEPTORIS OPTIMI, 

 SACRA." 



It ma}^ be noted that although the names in the Pkytophglacium 

 cannot be recognised as published, the specimens themselves must be 

 accepted as typical for certain species which are based upon them, 

 e. g. six species of Carex — C. Leucoglochin, C. Chordorrhiza, G. He- 

 leonastes, G. Lepfostachys, G Drymeia, G. Agastachys, — published 

 by Linn, fil (Suppl. 413, 414), are based on the specimens in the 

 Phytopliylacium, and the names there given by Ehrhart are adopted. 

 The connection of Ehrhart with the Supplementum is discussed in a 

 separate note ; here it may be added that reference to others of 

 Ehrhart's descriptions in the Beitr'dge show that specimens in his 

 other Exsiccata are equally typical as being the only material on 

 which the descriptions were based. Thus in " Bestimmung einiger 

 Krauter und Graser " (Beitr. vi. 131-147) the only material cited 

 for Poa trinervata and Festuca elongata is " Ehrh. cal. n. 36" and 

 *'Ehrh. cal. n. 93," the reference being to the specimens in the 

 Galamari^ ; the Calamaricd is also cited for species that, although 

 well known to pre-Linnean writers, had not received binomials — e. g. 

 Geum intermedium (p. 143) which is cited from '' Ehrh. herb. 

 [=:Herba3] n. lOG." Throughout the descriptions of " einiger 

 Baume und Strauche" (Beitr. vi. 85-103, vii. 127-138) ''Ehrh.arb." 

 {=:Arbores, Frutices, etc.) is cited ; Betula verrucosa, Salix undu- 

 lafa, S. amhigua and others in vi., S. hexandra and others in vii. 

 In this last Band, under Frunus nigricans (p. 127) and elsewhere 

 "Ehrh. off." { = Plant(U officinales) is cited in addition to "Ehrh. 

 arb." ; and there is a puzzling reference, which neither Dr. Jackson 

 nor I can explain, to " Ehrh. plantag, j). 18 " : similar reference, 



