RECENT ADDITIONS TO THE BRITISH MARINE FLORA, 147 



Hegetschweiler and Heer's " Flora der Schweitz " (1840), pp. 984-5. 

 It would be out of place for me, with my trifling experience, to offer 

 any opinion on the merits of the plant as a species ; but, from what I 

 can see thus far, I do not think it would pass to a higher grade than 

 sub-species of Dr. Boswell's category. It certainly is not far removed 

 from U. minor, and in the direction of U. intermedia the chain is con- 

 tinued through TJ . ochroleuca of R. Hartmann.* 



A further memorandum I have made tells me that there is also in the 

 Kew Herbarium a flowerless Bladderwort from Dr. Broomfield, which 

 is a much stouter or coarser plant than the ordinary run of U. minor. 

 It is sent under that name, and is from the only locality given in his 

 " Fl. Yect." There is what may be the same plant, also flowerless, 

 from Tichfield Common, Hampshire, in the Brit. Mus. collection, 

 whilst there are exceptionally delicate flowering-spikes of undoubted 

 Z7. minor, derived from the same locality from another source. 

 These stronger plants should be looked to by those who have the 

 opportunity. A further point to be cleared up is, what is the doubtful 

 plant from Gloucestershire Mr. "Watson speaks of in " Topog. Bot.," 

 sent to him through the Exchange Club as U. intermedia^ and by him 

 placed in preference under U. minor. 



March 22, 1876. 



Supplementary Note. — I have to-day (April 11) had occasion to 

 consult the British Herbarium of the Linnean Society, and therein 

 I find good specimens of the Loch of Spynie Utricularia, derived from 

 Mr. Winch's collection. The plant is named U. intermedia. It is 

 certainly not that species, and it is equally certain that it is not V. 

 minor. I am quite content to call it U. Bremii. 



RECENT ADDITIONS TO THE BRITISH MARINE FLORA. 

 By Mrs. Merrifield. 



In the year 1861 I received from Falmouth a specimen of Polysi- 

 phonia without specific name, a note of interrogation being attached to 

 it. I was subsequently able to identify the plant with P. divergens, 

 J. Ag., a native of the Adriatic and of the Atlantic at Cadiz. The plant 

 is found entangled with other Algae. It may be recognised by the 3 or 

 4 siphons visible in every part of the frond, and by the short articula- 

 tions. A transverse section shows 7 siphons surrounding a central 

 tube. If put into fresh water after being dried, it is apt to fly apart 

 at the joints. My plant bears tetraspores. 



Among some Mediterranean plants sent to me to name — if I could 

 — I recognised Ceramium circinatum, Kiitz., of which Agardh says 

 the habitat is " Angliae ! Gallise ! et Hispaniae ! " &c. Yet the plant 

 does not appear to have been noticed by British algologists ! This 

 induced me to look over my own specimens of Ceramium, and among 

 them I was fortunate enough to find a few small specimens of C. cir- 



* Of TJ. Grajiana, Koch, T have not seen any specimens ; it is from the 

 description apparently very close to U. into-jytedia. 



