302 THE JOURNAL OF BOTANY 



the other points mentioned, together with the fact that basigynia 

 forms do occur, show clearly that it cannot be referred to 

 C. aquatilis, and there is no G. aquatilis within miles of it. Any- 

 one interested will find the plant under discussion in many of the 

 marshes in Perthshire and Forfarshire over 2560 ft. Mr. Marshall 

 has named this same form (collected by him as well as myself on 

 the Caenlochan watershed) C. rigicla var. infei'aljnna, and, I 

 believe, correctly. It may be argued that it is G. Goodenowii var. 

 recta x rigida, but of this I am doubtful. — P. Ewing. 



PoA PALUSTRis L. — When botanizing with Mr. J. S. Purser, on 

 July 20th, in some disused brick-pits, between Worcester and 

 Upton-on-Severn, I gathered a grass which I could not recognise, 

 but which proved to be Poa ijalustris L. The station appears to 

 be a similar one to that in which this species was discovered in 

 Gloucestershire, in 1908, by the Eev. H. J. Riddelsdell, and the 

 plants were growing among vegetation almost identical with 

 that mentioned in his note (Journ. Bot. 1909, 73-4). These old 

 brick-pits are close to the bank of the river Severn and, I should 

 suppose, some fourteen or fifteen miles further up stream than 

 Mr. Riddelsdell's station. On a second visit we found the plants 

 well distributed over the swampy ground, now an osier bed, 

 around the pits (the willows noticed being *S. viminalis and 

 purpurea), but we saw none upon the river bank, which at this 

 place is steep and unsuitable for their growth. Like the 

 Gloucestershire plants, they should be referred to the var. effusa 

 Aschers. et Graebn. Another less satisfactory " find " was that 

 of a single plant of Bromus interruptus Druce, on June 28th, 

 growing by the side of a road across Malvern Common. I failed 

 to find any other plant of this in the neighbourhood and left some 

 flowering stems to ripen upon it, in the hope of its continuance 

 and increase. — Richard F. TowNDROw^ 



Cornish Plants. — This July I paid a flying visit to Cornwall 

 and once again explored the ballast-heaps and waste ground at 

 Par. In the marshes near there was an abundant growth of 

 Elisma ranunculoides, and Orchis latifolia in several forms, 

 one being a narrow-leaved form, perhaps worth describing as 

 0. latifolia L. var. linearifolia, since the var. angustifolia Lois. 

 (Pers. Syn. ii. 504, 1807), characterised by its long and keeled 

 linear-lanceolate leaves and almost undivided labellum, is doubtless 

 a form of incarnata. Here, too, were hybrids of 0. latifolia with 

 the plant I am calling 0. 9naculataY3bV.prcBCox\Yehstev (0. erice- 

 torum Lint.) ; I saw no true 0. maculata in Cornwall this year. 

 Polygonum aviculare L., in several forms, occurred, including the 

 var. erectum. On the ballast-heaps I found Geranium modestum 

 Jord., as limited by Mr. Clement Reid, on which I will send a 

 note later, since I think that, unless of hybrid origin, it deserves 

 specific rank. At Par it may be a casual, as I only saw a plant or 

 two, but it is abundant at Newquay, where Dr. Vigurs showed 

 me its locality, the plant being in early July quite withered. At 

 Newquay I saw, as a casual in waste ground, Bromus tectorum L. 



