178 ADDITIONS TO THE FLORA OF BERWICKSHIRE. 



The A. erecta of Hudson is known only by a single very imperfect 

 specimen in the Smithian Herbarium, and which differs from our plant 

 by having smaller fruit, and the enlarged calyces strongly tuberculated. 

 The present species differs remarkably from both A.patula and angus- 

 tifolia, by its densely flowered compound spikes ; those plants having 

 long simple interrupted spikes. It is also distinguished from the for- 

 mer, by its smooth, shining, and much smaller seeds, and the shape of 

 its leaves ; from the latter, by its denticulated calyx and great difference 

 of habit. 



This plant is not uncommon throughout England and the South of 

 Scotland. I noticed it in Holy Island, and also near the Town of Ber- 

 wick, in great plenty. 



3. CHENOPODIUM BOTRYOIDES. Sm. Eng. Bot. t. 2247. 



I gathered this plant in Holy Island, in company with Dr Johnston, 

 in September last, and have compared the specimens with others from 

 Lee Pool, Cornwall, with which they exactly agree. 



4. SILENE NOCTIFLORA. Linn. Eng. Bot. t. 291. 



We also found a few specimens of this plant during the same visit to 

 Holy Island. 



5. POTAMOGETON PLANTAGINEUS. Du Croz (in Gaud.fl. helv. i. 471, 



tab. 3.) Leaves all membranous, stalked, rather opaque, blunt, 

 entire, lower ones oblong, upper, elliptical ; nuts minute, ob- 

 liquely ovate, rounded on the back (when fresh) ; spike slender, 

 cylindrical, densely flowered, on a long terete peduncle. Roem. 

 and Sch.iu. 504. Reich. 24. Bert. Fl. Itat. ii, 232. P. coloratus, 

 Horn, in Fl. Dan. 1449, Cham, in Linncea, ii. 194, t. 5, f. 15 ; 

 P. Hornemanni " Meyer chlor. Hanov. 521 ;" Koch Syn. 674. 



Differs from P. natans by its beautifully diaphanous reticulated leaves, 

 none of which are coriaceous, and its much smaller fruit ; from P. ob- 

 longus by its leaves, and the acutely heeled back of its dry fruit ; in that 

 plant it is always obtuse. 



A specimen of this species exists in Dr Johnston's Herbarium, 

 gathered by Dr R. D. Thompson, at Ferney Rig marsh, Berwickshire. 

 It has been found in several parts of England. 



Hoping that these few notes may be acceptable to vour Club, believe 

 me, &c. 



CHARLES C. BABINGTON. 



