CKITICAL NOTES ON SOME SPECIES OF CERASTIUM. 387 



faciebns depressa, dorso sulcata. — Planta 12 centim. vel plus minus 

 ultra, tota pilis transversis villoso-hirsutis obsita. 



Tenore says that his plant is very near C. obscuriim Chaub., 

 " sed folia in nostro obovata nee lanceolato-oblonga, et pedunculi 

 breviores." Both C. obscurum and C. pellncidum are accorded 

 specific rank in St. Amans' Fl. Agenaise. The plant is certainly 

 identical with C. se)nidecandniin (vix Linn.) Desf. Fl. Atlantica, i. 

 306 (1798). C. arenarium is kept up as a species by Lojacono 

 (Fl. Sicula, 179), specimens being recorded from Mt. Etna and 

 Catania. C. senudecandnim var. arenarium. AYillk. & Lange, Prodr. 

 fl. Hisp. iii. 632, is quite a different plant — " petalis minimis (non 

 nisi sub lente conspicuis), saspe circacircum denticulatis." 



31. C. ARENosuM Kit. Addit. fl. Hung, in lAmifBa, xxxii. 518 

 (1863). So named by Kitaibel from the specimens occurring in 

 " graminosis arenosis." This very doubtful plant cannot stand as 

 a species or even as a problematical variety. The enigmatical 

 diagnosis is — " descriptum sub nom. C. oialis, a quo vero secundum 

 descriptionem Smithii, cui hoc C. vulgatwn est, differt. Proximum 

 C. viscoso, a quo distinguendum." 



32. C. AROiEUM Boiss, & Bal. Diagn. PI. Or. nov. Ser. ii. vi. 

 38 (1859) ; Boiss. Fl. Orient, i. 715. 



a. tijpicum mihi. Tota planta pubescenti-viscida. 



/?. glahratuui Haussk. ined. in exs. Sintenis, It. Orient. 1894, 

 n. 6089. Tota planta glabrata. 



Hah. Gumuchkhane, in prov. of Trebizond. 



Species facie C. Kazbek, hujusdem foliis oblongo-spathulatis, 

 petalis semi-bifidis et stylis 5, distincti. 



The teeth of the capsule are circinate-convolute, and not revolute 

 at the margins : I have therefore transferred the species from the 

 subgenus Dichodon to the subgenus Strephodou. 



33. C. Argentinum Williams. — Syn. C. nutans var. Argentinuyn 

 Pax in Engl. Jahrb. xviii. 25 (1893). A typo C. nntantis toto coelo 

 differt, — planta 50 centim. alta, radice perenni, caulibus ramosis, 

 foliis oblongo-lanceolatis obtusis, potius C, crassipedi Bartl. affinis. 



34. C. armeniacum Gren. Monogr. Cerast. 19, t. 1 (1841) ; 

 Fenzl in Ledeb. Fl. Kossica, i. 400 (1842) ; Boiss. Fl. Orient, i. 719. 



Type-specimens, Aucher-Eloy, Herb. d'Orient, n. 614, in Herb. 

 DC, at Geneva. 



Hab. Turkish Armenia ; at Haho and Gumuchkhane, in prov. 

 of Trebizond. Though included by Ledebour, it is not a[species of 

 the Russian flora, and does not occur in Russian Armenia. 



The plant is distinguished from all the other species of the sub- 

 genus Strephodon by its remarkably curved capsule, which is more 

 than half exserted from the calyx. Grenier says of the calyx, 

 '' sepala anguste scariosa," but Boissier states " sepalis late scari- 

 osis." An examination of the type-specimens shows that the 

 former character applies to the outer sepals, and theUatter to the 

 overlapped sepals. 



(To be continued.) 



