52 NOTES ON THE BOTANY OF SWANAGE, DORSET. 



Kosa hihracteata, Bast. Nitson, near Swanage. 



Daucus ijummifcr, Lam. Sea cliffs, Tilly Whim, near Swanage. 

 Admirably characteristic specimens. The shining bright green 

 leaves, with their broad blunt segments, strikingly distinguish this 

 plant from the maritime forms of D. Carota which grow along 

 with it. 



Valerianella Auricula, DC. This is the prevailing species of the 

 genus in the cornfields lying along the base of the chalk downs, 

 north of Swanage. 



Salicornia procumhens, Sm. Shore of Poole Harbour, nearest 

 to Little Sea. 



The following localities for some of the rarer species may be 

 added, most of them not hitherto noted in the Swanage or (G) 

 division of the Dorset Flora. 



Leonurus cardiaca, L. Studland. 



Borcifjo officinalis, L. Corfe Castle, and banks of stream, 

 Chapman's Pool. 



Mijosotis jjcdustris, L., /3. strir/ulosa. — Corfe Castle. 



Potamo(jeton jjcctinatus, L. Little Sea. 



P. 2i€ctinatus, var. scoparius. Little Sea. 



P. pusillus, L. Little Sea. 



Euppia rostellata, L. Poole Harbour, near to Little Sea, grow- 

 ing with Zoster a nana. 



Blijsmus compressus, Panz. Bogs, Studland Heath. 



I had also the satisfaction of finding in then- recorded habitats 

 the following very rare plants : — 



Cijperus longus, L. Ulwell, Swanage, growing in great pro- 

 fusion and most vigorously over two large marshy fields. 



Scirpus parvulus, K. & S. — Little Sea, Studland. Mr. More's 

 description of this plant, as found by him near Arklow, 

 L:eland (Journ. Bot. 1868, pp. 254, 321), agrees admirably 

 with its appearance and habits in Dorsetshire. Little Sea is a 

 large shallow pool, a mile in length, peaty in its upper portion, 

 and sandy towards the sea, with which it has till recently com- 

 municated ; now a ditch and dry dyke keep back the tide, and 

 the water is not perceptibly brackish. On the sea side of the dyke 

 the principal plants are : — Salicornia procumhens, Suacla maritima, 

 Spertjularia marina, Schwnus ni(/ricans, and a rigid dense-headed 

 form of Juncus viaritinius, with polished dark brown sheaths, 

 approaching J. acutus. On the land side of the dyke are found 

 Pohjpoi/on monspeliensis, Speryularia neglecta 1 , Agrdstis stolonifera, 

 and SamoluH Valeranili. Here, too, on the sandy, often inundated, 

 shores of the pool, the Scirpus parvulus abounds. It clothes the 

 oozy surface of the sand with its yellowish green herbage over a 

 considerable area. Its hold upon the sand is so slight that, after 

 a stormy day of wind and rain, the shore for a distance of fifty 

 yards was piled up with wrack consisting of this plant alone, just 

 as seaweed is thrown up along the beach. A little farther inland 

 the wrack consisted of I'otamogeton pusillus, Charas, and Mgriophglla. 

 The Scirpus was flowering very fi*eely, and in some cases, though 

 rarely, the fruit was fairly matured ; it is smooth, trigonous, with 



