266 NOTES EESPECTING SOME PLYMOUTH PLANTS. 



native rather than denizen'; still it is just one of those species about 

 ■which it seems impossible to give a decided opinion. 



Raphaiius maritimus, Sm. In plenty by Bigbury Bay, about 

 the mouth of the small stream running down from Kingston village ; 

 also seen on a cliff a little west of this spot, and on top of a hedge 

 bank between two fields immediately over the brow of a cliff nearer 

 Ringmore, 1875. As regards the coast line for twelve miles on either 

 side of Plymouth, this is quite a rare and local species ; for I have found 

 it, and that very sparingly, ^n only two other spots of very limited 

 extent. 



Cerastium Bemidecandrum^ L. On sand blown up from the shore 

 over a low cliff below Tregantle Port, East Cornwall, growing with 

 C. tetrandrum ; Ai^iil, 1875. C. semidecandrum is a very rare plant 

 near Plymouth ; but C. tetrandrum is general as a maritime, or at least 

 sub-maritime, species. It may be worth while to add that this summer 

 C. pumilum grew sparingly, with a single plant oi Phleum arenatium^ 

 on a heap of fine ballast sand at Cattedown by the Plym estuary. 



Sypericmi hxticumy Boiss. In plenty in a swamp in a large wood 

 between Treloy Farm and Seaton Sands, East Cornwall, associated 

 with Pedicularis palustris, Nephrodium spimdosum, and other less 

 common moisture-loving species. This Hijpericum, as well as H. 

 tetrapterum, is often attacked by the larva of a small insect (a beetle, 

 I think) which eats away much of its foliage, making it look very 

 poor and wretched. 



Geranium rotundifoUum, L., Jlore alio. Between one and two 

 dozen plants with white flowers growing with others on a wall by the 

 road between Honicknowle and St. Budeaux village. May, 1875. A 

 white variety of this seems to be very rare, but one of O. molle is 

 very frequent. I have also seen, though rarely, white varieties of 

 pyrenaicum^ dissectum, and Rolertianum about Plymouth. 



Trifolium hylridum, L. Now plentifully established as a roadside 

 plant all around Plymouth, appearing year after year to become more 

 plentiful. 



Lotus hispidus, Desf. In considerable quantity in a grass field, to 

 all appearance broken at no distant date, above Bigbury Bay, between 

 Kingston and Ringmore, July, 1875. Contrary to what was the case 

 in this instance, it is mostly in old unbroken turfy pasture land on 

 the coast that it is to be met with, usually associated with the very 

 similar angustissimus. The two are by no means the extremely rare 

 plants that many suppose them to be. 



Rosa systyla^ Bast. Quite common all about Plymouth, and pro- 

 bably so throughout Devon and Cornwall. I have seen it so fkr west 

 as between Truro and Penryn. This is the rose which in Journ. Bot., 

 vol. viii., p. 350, I put as a second form under collina, Jacq., but 

 since then I have forwarded M. Ddseglise numerous examples collected 

 from various places in Devon and Cornwall, and he has pronounced it 

 to be the systyla of Bastard. I have also been favoured by him with 

 French specimens of systyla bothjin flower and fruit, and a careful com- 

 parison of them with examples of the Plymouth plant has led me to 

 fully accept his view, since it has shown the unquestionable identity 

 of these Roses. The hue of the foliage of R. systyla is lighter than 

 in most of the plants of the Canince section, the leaves are more 



