WORLD-DISTRIBUTION OF THE BRITISH CARYOPHYLLACEiE. 187 



IV. Cerastium pnmUuiii, Curt. — Evidently identical with C. glnti- 

 nosiim, Fries, and C. obscurum, Chaub., a plant diffused through 

 Europe, with a large number of synonyms. May be extra-European. 

 Compare with it the Cape 0. capense of Sonder. 



I. Cerastium arvense. — The Chilian and Patagonian plant identical 

 with the English. It has a wide dispersion in extratropical S. Ame- 

 rica, reaching down to Tierra del Fuego. 



VI. Cerastium alpinum. 



VI. Cerastium latifolium. 



IX. Cherleria sedoides. — Tyrol, Gander ! Smith's plant, so named 

 from Mount Parnassus, according to Boissier, is Alsine trichocalycina. 



Placing together the species of the same general type of dispersion, 

 we obtain, therefore, the following result : — 



1. Groups not distinctively boreal or montane. 



1. Species common to the north and south temperate zones, 14. — 

 Silene gallica, Lychnis Githago, Sayina apetala, S. procumbens, Spergula 

 arvensis, Speryularia marina^ S. media, S. rubra, Arenaria serpyllifoUu, 

 Stellaria media, S. glauca, Cerastium glomeratum, C. triviale, C. ar- 

 vense. 



3, Species dispersed through the north temperate zone, both in the 

 Old and New World, 8. — Silene infata, S. noctiflora, Lychnis diurna, 

 Sayina nodosa, ILonckeneja peploides, Arenaria verna, Stellaria nemo- 

 rum, S. tdiginosa. 



3. Species dispersed through the north temperate zone, in both Eu- 

 rope and Asia, 13. — Saponaria officinalis, Silene Otites, S. nutans, S. 

 conica. Lychnis viscaria, L. Flos-cuculi, L. vespertina, Arenaria tenui- 

 folia, A. trinervis, ILolosteum umbellatum, Stellaria Ilolostea, S. gra- 



minea, Cerastium aquaticu7n. 



4. Species dispersed throughout Europe, 7. — Bianthus prolifer, D. 

 Armeria, D. deltoides, Moenchia erecta, Sayina maritima, Cerastium 

 semidecandrum, C. pumilum. 



5. Species restricted to the western half of Europe, 5. — Bianthus 

 ceesius, Silene maritima, Sagina ciliata, Spergularia rupicola, Cerastium 

 tetrandnim. 



2. Oroiips distinctively boreal or montane. 



6. Species common to Northern Europe, Northern America, and 



o 2 



