SHORT NOTES 259 



at the end of August the water became very low, and the plant 

 here and there became stranded ; it was now the form terrestre 

 Gliick. The only one I could not say I saw was the form pumila 

 Gliick, which he describes as ' misera forma terrestris semine 

 nata,' &c. The figure in English Botany (t. 1615, 3rd ed. t. 1442) 

 shows a state between Gliick's natans and terrestris. In the 

 description no mention is made of any other leaves than the 

 cordate floating ones. The plants noted were simply the growth 

 and evolution of the species, influenced by warmth and depth of 

 water. Certainly in July and August, when gathering this in 

 other parts of Surrey, only the form natans could be seen on the 

 water surface ; but, carefully working in the mud, the form 

 graminifolius was found, probably the result of last year's seeding. 

 Syme in English Botany queries it as a perennial ; Hooker and 

 Babington are silent on this point ; Bentham calls it an annual ; 

 Grenier and Godron call it perennial, and Ascherson and Graebner 

 also. My own opinion is that it is neither, but a biennial, as I 

 never was able to find any stolons as in Hydrocharis or Alisma; 

 and the seeds evidently drop off, sink (they sink at once when 

 ripe!), and in winter or early spring form the little tufts found in 

 July with grass-like leaves." 



Lamium htbridum Vill. — During 1912 plants of this species 

 were met with in Surrey and in Essex with unusually conspicuous 

 flowers, which almost invited comparison with the long corollas 

 of L. amplexicaule. The existence of this larger-flowered form 

 seems to support the view held by some botanists that L. hybridum 

 is a fixed hybrid derived from L. purpitreum and L. amplexicaule. 

 I find that these larger-flowered plants agree well with the form 

 described by Eouy (Fl. de France, xi. p. 296) as var. dissectum 

 Mutel, " Plante plus robuste ; tube de la corolle nettement et + 

 long, exsert ; feuilles sup. plus cuneiformes a la base, obtuses, a 

 dentelure plus profonde," except that some of my Surrey plants, 

 growing on a dry sandy bank, could hardly be described as 

 "robuste." This larger-flowered form also agrees with Mutel's 

 own description and figures in his Flore francaise, hi. 261, f. 364. — 

 C. E. Britton. 



Armoracia rusticana with dissected leaves. — In his note 

 on this subject (Journ. Bot. 1912, 95) Dr. Eendle suggested that 

 perhaps the very dry summer of 1911 had had some effect in the 

 production of this abnormality. At Par, East Cornwall, where, 

 in 1911, I noticed only one plant with dissected leaves, in August, 

 1912 — a remarkably wet season — I noticed many. Entire and 

 dissected leaves grew together, but on separate " crowns," that is 

 to say, each crown produced only one kind of leaf. — Chambre 

 C Vigurs. 



Plantago media L. — Last year I gathered" in the vicinity of 

 Epsom Downs, Surrey, a remarkable-looking example with narrow, 

 more or less erect leaves, instead of the usual broad leaves 

 appressed to the soil. To some botanists the plant would, I do 

 not doubt, suggest the combination P. lanceolata x media, but I 



