CRITICAL NOTES ON SOME SPECIES OF CERAST1UM 353 



be specifically distinct, as I treated it in the Provisional List, and 

 as had been previously suggested by Mr. Lac.iita in a letter to 

 Nyman (1884)— see Consp. Fl. Eur. suppl. ii. 359. He thinks that 

 it should be placed near G. tomeiitosum, as the fruit-pedicels are 

 straight (not cernuous as is the case in C. arvense), and as is 

 indicated in a MSS. note in Gussone's herbarium at Naples, attached 

 to an authentic specimen — " calyces defiorati erecti sunt, ideoque 

 G. arvense esse nequit, in quo calyces defiorati cernui." Moreover, 

 the corolla is much larger than in any form of G. arvense. In the 

 Neapolitan mountains of Taburno, Mt. Vergine, ete., there are found 

 various forms (e.g., G. Graefferi Guss. herb.) which seem intermediate 

 between G. Mrsutum and G. tomeiitosum. And, as is mentioned 

 above, Seringe notes an additional character, not alluded to by 

 Tenore— " capsulis oblongis subincurvis." 



151. C. hirtellum Pomel, Nouv. Mat. fl. Atlant. 205 (1874), 

 ext. Bull. Soc. Climat. d' Alger. — Subg. Ortkodon, sect. Sckizodontia. 

 Glutinoso-hispidum, annuum. Radix gracilis. Caulis 4-5 ctim., 

 simplex erectus. Folia ovalia basi paullum attenuata, inferiora 

 rosulata, media ovali-oblonga, summa bracteiformia. Dichasium 

 paucitlorum. Calyx fructifer basi subumbilicatus patens paullum 

 arcuatus, pedicello longior ; sepala oblonga subacuminata, interiora 

 late scariosa. Petala biloba, calyce parum breviora. Capsula inclusa 

 recta, dentibus in conum rectis dehiscens. Semina lateritia, valde 

 echinulato-tuberculata. 



Sab. Algeria : on damp schistose rocks at Garrouban. 



Var. echinulatum nobis. — Velutino-glandulosum, elatius. Caulis 

 10 ctim. Folia 7-8 mm. Sepala et petala 6 mm. Capsula longior, 

 ad 12 mm. 



Hab. Algeria : Boghar. — Syn. G. echinulatum Battand & Trabut, 

 Fl. de l'Alg. i. 148 (fasc. 1, 1888). 



Described from specimens in Herb. Kew. ( Warion, PL Atlant. 

 sel. 1876, n. 40), collected in stony and woody places about Daia, 

 prov. Oram 



The species is distinct in the character of the seeds, invested with 

 spined tubercles. Its record of occurrence in China is an error, due to 

 misquotation of title-page in one of Debeaux's opuscula. 



152. C. histrio Correns in Oesterr. Bot. Zeitsch. 1909, 182. — 

 This is hardly more than a nomen nudum. It is founded on speci- 

 mens collected on a mountain, at high stations, in Yugo-Slavia. 

 Referred to L. Adamovic for examination, they were labelled by him 

 " G. Banaticum," which Correns says they do not match. They are" 

 in the Vienna Herbarium under n. 50, as the collector's number. 

 Possibly they belong to one of the many forms of G. grandijlorum 

 Waldst. et Kit. 



153. C. Hochstetterianum Fenzl, Verbreit. Fam. Alsin. fol. 

 tab. ad p. 56, nomen (1833) ; = C. pyrena'icum Gay (1832). 



(To be continued.) 



Journal of Botany. — Vol. 59. [December, 1921.] 



