NOTES ON THE FLORA OF PERTHSHIRE 167 



with such large flowers as this, which was gathered at an altitude 

 of 3500 feet. Taking the large flowers into consideration, one 

 might suppose the plant of the Breadalbanes to be the high-alpine 

 R. stipatus, Jordan ; but this has fruits which end in a somewhat 

 oblique and very short, scarcely hooked beak. The long curved 

 fruit-beak distinguishes R. Nathorstii, f. hirsuta, from R. tomo- 

 phylhis, Jordan, also. Judging from the material which I sent 

 him, Herr Freyn thinks R. Nathorstii to be the boreal form of 

 R. vulgatus, Jord. Individual plants with shortened rhizome 

 appear to be the transition to R. stipatus, Jord., and also to R. 

 acris. In order to assist in clearing up these open questions I 

 should be very grateful for specimens of R. acris from many 

 localities, mountain and lowland, with rhizome, flowers, and well- 

 developed fruit. Specimens from the Orkneys, Shetlands, and 

 the Hebrides, as well as those from high altitudes, would be very 

 much welcomed. I would forward them to Herr Freyn, and 

 interesting results would most certainly be obtained. Herr 

 Freyn thinks that some of the forms are geographically distinct, 

 and that R. Nathorstii, which was first reported from Green- 

 land, is excluded from the warmer localities. I also collected 

 Nathorstii on Ben Heasgarnich, Creag-an-Lochain, and Ben 

 Laoigh in Perthshire [and also on Aonach Mhor in Westerness, 

 on Lochnagar, South Aberdeen ; and on Ben Doireann, etc., in 

 Argyll]. It is new to Britain as a variety. 



var. Steveni (Andrz.} occurs in Glen Shee at 2000 feet, and 



as the forma humilis on Ben Lawers. 

 var. vulgatus (Jord.}. On Ben Lawers. 

 var. pumilus, Wahl. The plant from Braeriach alluded to 

 recently by the Rev. E. S. Marshall is not, I think, 

 identical with the plant I recorded as var. pumilus from 

 Corrie Sneachda on the Cairngorms. It will probably be 

 found to belong to Nathorstii. 



Caltha palustris, Z., var. minor, occurred at 2800 feet on Glas 

 Thulachan. I saw a specimen rooting at the nodes, the \ax.pro- 

 cumbens, Beck. 



Papaver dubium, L. All the specimens from Perthshire seen by 

 me are var. Lamottei. 



Corydalis claviculata, DC. ( Capnoides daviculata, Druce). Luxuriant 

 on thatched roofs this year near Lawers. 



Cardamine pratensis, L. I saw the true plant with sessile leaflets 

 on Glas Thulachan ; but C. palustris, Peterm., with stalked 

 leaflets, and usually with lilac flowers, is certainly the common 

 Perthshire form. I saw it at 3200 feet on Ben Heasgarnich, 

 and at 2600 feet in Isla [and at 3300 feet in South Aberdeen]. 



