CALLITRICHE TRUNCATA. 155 



examined the British specimens of CallUriche, in the British Museum, 

 and detected amongst them the above-named species. 



C. trimcata was first described and figured by Gussone, in his 

 'Plantae Rariores' (1826), p. 4, and t. ii. fig. 2, from plants collected 

 at Cotrone, in eastern Calabria ; neither the description nor the plate 

 are sufficiently accurate for complete identification, but Ur. Hegelmaier 

 has received specimens from Gussone himself. The species was sub- 

 sequently found in Sicily (Spec, in Todaro Fl. Sic. Exs. n. 623) and 

 Sardinia. In his 'Monographic der Gattung Callitriche ' (18C4), Dr. 

 Hegelmaier adds Portugal, and he informs me that he has seen speci- 

 mens also from two or three localities in Algeria, from the island of 

 Veglia in the Adriatic, and from that of Santa Maura in the Ionian 

 group. Wetteren, in Belgium, produces the plant, according to Cre- 

 pin's 'Manuel,' ed. 2, p. 264, and specimens have been also published 

 in Schultz's 'Herbarium Normale,' cent. 7, n. 658, as G. auiumnale, 

 L. var. /3, Lebel, collected by Dr. Lebel at Carentan, in the depart- 

 ment of Manche, Normandy. The C. autumnalis, L. ?, from the same 

 place, of Brebisson's ' Flore de la Normandie,' ed. 4, p. 384, is almost 

 certainly the same, though C. trimcata is also recorded in that book 

 from another locality in Normandy. 



The English specimens above alluded to were collected by Mr. Borrer, 

 on June 6, 1826, growing " completely under water in a deep ditch 

 between Amberley Castle and Wild Brook," Sussex. The plant was at 

 first thought to be C. autumnalis, and under that name it was described 

 and figured in 1829, by W. J, Hooker in Eng. Bot. Supp. 2606, the 

 figm-e in all respects, as far as it goes, is a very good one. When the 

 true C. autumnalis of Linnaeus became better understood, it too was, in 

 1832, admirably figured in E. B. Supp. 2732, from Anglesey speci- 

 mens, collected by Mr. W. Wilson, who also wrote the description 

 accompanying the plate. He there states that the Sussex plant pre- 

 viously figured is C. pedunculata, and E. B. Supp. 2606, has since 

 been constantly quoted by botanical authors as a figure of that com- 

 mon species. Even Dr. Boswell-Syme, in his new edition of ' English 

 Botany,' vol. viii. t. 1274, has retained it to represent C. pedunculata, 

 De Cand., and has added to the plate facsimiles of Dr. Hegelmaicr's 

 outline-sketches from his ' Monographic,' of the fruit of that plant, the 

 result of much careful dissection and observation. Dr. Syme may, how- 

 ever, have had some mistrust, for with unusual profuseness of illus- 



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