with Remarks on the Genus by Dr. Griesbach. 439 



to E. portensis (Link), but it differs sufficiently by ascending 

 stems, the form of the leaves, and length of the calyx ; the 

 latter character is indeed most important in helping to di- 

 stinguish the polymorphous Erythrcece, as you will see by the 

 following list of all the species which I know. 



H The tube of the corolla, when in flower, is as long as the 

 calyx in E. linarifolia (Pers.), chilensis (Pers.), caspica (Fisch.), 

 maritima (Pers.), spicata(Pers.), and probably E.elodes (R.S.); 

 it is from one-fourth to one-third longer than the calyx in E. 

 ramosissima (Pers.), latifolia (Smith, — a variety of which is 

 E. tenuiflora, Link), quitensis (Kunth), Roxburghii (Don), 

 australis (Br.), Milhlenbergii (mihi), mexicana (mihi), and dif- 

 fusa (Woods) ; double as long as the calyx in E, Centaurium 

 (Pers.), portensis (Link), and trichantha (mihi). 



* You will see that I have done justice to the Erythrcece 

 of the British Flora. Those species in your Compendium are 

 as good species as any in the system, and the English Botany 

 is the very best basis for a correct knowledge of the European 

 Erythr&ce. E. littoralis is the same with E. ccespitosa (Link), 

 and this again is a smaller form or variety of E. linearifolia 

 (Pers.), which grows especially on the German sea-shores, 

 and of which I will not forget to send you specimens. These 

 forms have been tolerably represented in Reichenbaclr's e Ico- 

 nographia' : there are not less than fifteen synonyms of this 

 species. 



" E. pulchella (Fries), again, is a smaller variety of E. ramo- 

 sissima (Pers.), but the latter is identical with the English E. 

 pulchella ; to this species I also refer E. Meyeri (Ledeb.), 

 having seen intermediate states, and even our form itself, from 

 Siberia. E. latifolia has a straight, nearly simple, and nar- 

 row-flowered variety, also on the sea-shores of the south of 

 Europe ; this is E. tenuiflora (Link), or E. centauroides 

 (Schrad.), or E. arenaria (Prest.), which occurs almost always 

 wrongly named in herbaria, though it is a remarkably com- 

 mon appearance of the plant. 



" Some years ago a dissertation on the genus Erythrcea was 

 published by M. Schmidt, but seldom have species and sy- 

 nonyms been so much confounded as by this writer." 



The following character and description, aided by the ac- 



