The Scottish Naturalist. 321 



Both forms occur, but the var. umbrosa seems to be the com- 

 moner. 

 Sisymbrium officinale Scop. 



var. leiocarpum D.C. Pods glabrous or nearly so. I have met 

 with this twice — a single plant collected at Aberfeldy (perhaps 

 there may have been more of it, but I had not discovered at the 

 time that such a form occurred), and a number of specimens on 

 the ruins of InnerperTray Castle. Under the belief that it was 

 undescribed, I had given this variety a name (thinking that it 

 deserved one as much as, but no more than, similar forms of other 

 Cruciferae), but Mr. A. Bennet found specimens in his herbarium 

 named var. leiocarpum D.C. To him I am indebted for a note 

 of the distribution, which is wide but not general, probably because 

 the form is overlooked. I see that Professor Babington alludes 

 in his Manual to the fact that the pods are sometimes glabrous, so 

 he appears to have met with it. 



Subularia aquatica L. Though usually characterised as 

 " stemless," there is sometimes a distinct though short stem. 



Geranium sylvaticum L. Flowers sometimes very small, 

 with petals about as long as the calyx. Perhaps this is var. parvi- 

 florwn. A. Blytt. Norges Flora III., p. n 05. 



Geranium sanguineum L. On the shingly shore of Loch 

 Rannoch a curious form of this plant grows, and has preserved its 

 distinctive characters under cultivation for some years. This 

 variety (which may be called micrant/ia) is altogether smaller and 

 more procumbent than the usual form, with leaves more crowded, 

 and their segments more tapering and acute ; the flowers %£ inch 

 or less in diameter, and the petals scarcely longer than the sepals. 

 In the cultivated plant the peduncles are often 2-flowered (one of 

 the characters of G. sanguineum is that the peduncles are 1- 

 flowered) ; the anthers seem to be sterile, and the filaments are 

 more triangular than in the type. 

 Trifolium procumbens L. 



a. minus Koch. Peduncle twice the length of the leaf. 



b. majus Koch. Peduncle about equal in length to the leaf. 

 Flower head usually larger, and colour darker. 



Both forms occur, but var. minus is by far the commonest. 

 Trifolium dubium Sibth. 



var. pygmceum Soy. -Will, is dwarfer, and has the middle leaflet 

 not with a longer stalk than the lateral ones, as is usually the case. 



