474 
CRITICAL NOTES ON SOME SPECIES OF CERASTIUM. 
By Freperic N. Wiuuiams, F.L.S. 
(Continued from p. 315.) 
107. C. exarum Tenore, Fl. part. Nap. i. 872 (1828); et Fi. 
Napol. iv. 236 (1830). The secon 
in Index Kewensis and other works. Not mentioned by Grenier. 
folium Vis., under the name of C. Biebersteinii var. italicum. 
. C. Exsrusense Boiss. Fl. Orient. i. 729 (1867). A species 
founded on Awcher-Eloy exs. no. 4246. I examined these type- 
specimens in Boissier’s herbarium at Chambésy. There are no 
duplicates in Herb. Kew., but I found there mixed with 0. Kazbek, 
on the same sheet, Kotschy’s Pi. Pers. bor. 1843, no. 498, which 
Boissier rightly distinguishes from C. Kazbek (for under this name 
Kotschy distributed the Persian specimens) and adduces to his 
species. C. Meyerianum, subsequently characterized by Ruprecht, 
if it is really annual, seems closely allied to this species 
Hab. N. Persia; the alpine districts of Hasartschal and 
Elamont, on the western spurs of the Elbruz range, only a few 
parasangs from the shore of the Caspian Sea. 
109. C. exxcans Fisch. in litt. ex DC. Prodr. i. 400 (1824). 
ecimens so named by Fischer, and sent by him to Seringe 
scribed in the Prodromus under the name of Steilaria elegans, 
110. C. enoneatum Bieb, Fl. Taur. Caue. iii. 316 (1819). By 
Grenier reduced to a var. of C. Davuricum. B y Ledebour taken up 
as the type (a glabrescens) of C. nemorale Bieb.; this latter being 
considered as var. 8 villosa. There are no specimens in Herb. Kew. 
ies in M. von Bieberstein’s work, 
and a comparison of the descriptions shows the following points of 
difference in favour of the former :—Caulis rami elongati; folia 
be 
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