122 THE JOURNAL OF IJOTANf 



complete list of the whole genus Avith a clavis, but we cannot concur 

 Avith a number of his conclusions, ])artieularly as regards synon3any. 



In 1912, Dr. Knuth issued his Monograph of the Geraniacecd 

 {P^anzenreich, 53 Heft, iv. 129, p. 271), where he separates 

 E. hipinnaUim Willd., E. cicutarium L'Herit., and E. moschatum 

 L'Herit., as follows : — 



A. ^'' Fovea plica concentrica destitiita. Pedunciili 2-4zj{orir — 



E. hipinnatum W. and var. /3. sahulicolum Jord. 



B. " Fovea plica concentrica manifeste circumscripta. Peduti- 



ctili scepissime 5-7 fiori?' — E. cicutarium L'Herit. and 

 E. moschatum L'Herit. 



He thus considers E. sahulicolum Jordan (with which we have 

 satisfied ourselves that E. glutinosum Dum. is synonymous) to be 

 better placed as a variety of E. hipinnatum Willd. than under 

 E. cicutarium L'Herit. This point will be dealt with later. 



Our study of the British forms confined to the coast leads us to 

 adopt the following classification, omitting for the present, plants 

 which, occurring normally inland, may frequently be found on sandy 

 ground in proximity to the sea. We have included E. dentatum in 

 the clavis as it is a species very likely to occur on our coasts. 



Pit of carpel not surrounded by a furrow. Fertile stamens with 

 filaments sub-dentate or suddenly enlarged at the base. 



Peduncles few (2-3) flowered, + shorter than the leaves. 



1. Very glutinous. Beak of carpel 15-20 mm. long. 



E. glutinosum: 



2. Slightly glandular or glutinous. Beak of carpel 

 25-29 mm. long E. den latum. 



Peduncles many (3-5) flowered, ± longer than the leaves. 



3 E. neglectum. 



Pit of carpel surrounded by a furrow. Fertile stamens with . 

 filaments gradually enlarged at the base. 



4. Glandular. Peduncles man^^-flowered. Leaflets 



broad E. Lehelii. 



5. Eglandular. Peduncles few - flowered. Leaflets 



narrow E. Ballii. 



Pit of carpel not surrounded bv a furrow. Fertile filament sub- 

 dentate or suddenly enlarged at base. 

 Peduncles 2-3 flowered, short. 



1. E. GLUTINOSUM Dumortier in Bull. Soc. Bot. Belg. iv. 3-15 

 (1865). 



E. sahulicolum Jordan ined. ex Billot, Fl. gall, et germ, exsicc. 

 184<5 (1855) nomen. 



E. hipinnatum Willd. /3. sahulicolum Brumh. Mon. Erod. oo 

 (1905) ; Knuth, in PJlanzenreich, 53 Heft, iv. 129, p. 273 (1912). 



Most modern authors (Ascherson & Graebner, Brumhard, Rouy & 

 Foucaud, Knuth, etc.) place this plant as a variety of E. hipinnatum 

 Willd., which, as already pointed out, differs specifically from E. cicu- 

 tarium agg., but Ave, howcA^er, should hesitate to so group it for the 

 following reasons : — 



E. hipinnatum was founded upon the Geranium hipinnatum of 



