MENYANTHES 345 



G. germanica is in full bloom. Specimens from Letcombe were dis- 

 tributed through the Bot. Exch. Club by the author in 1892. 



X G. Pamplinii, Druce in Eep. of Bot. Exch. Club, 379 (1892) = G. 

 Amarella X GERMANICA. G. axi'lavis X Wettsteiiiii, Wettst. in lit. 



This interesting hybrid was noticed for the first time by the author 

 in September, 1892, growing with G. Amarella and G. germanica on the 

 earthwork called Letcombe Castle. In this locality a good deal of 

 G. Amarella continued in flower with G. germanica ; usually it is an 

 earlier flowering plant. The obconical tube of the flower of G. ger- 

 manica fully distinguishes it from the nearly cylindric tube of 

 G. Amarella. In this instance a few plants of a distinctly intermediate 

 character were found ; they had a longer and more conspicuous corolla 

 than G. Amarella, but the corolla tube was more cylindric than in 

 germanica ; the pollen was defective, and the plant was distinctly an 

 intermediate. Specimens were sent, in 1892, to Dr. von Wettstein, 

 who has kindly written to me saying that he has no doubt that they 

 are a hybrid (G. axillaris x Wettsteinii) from their intermediate appear- 

 ance, from the pollen grains being only about 58 per cent, perfect, and 

 from the fact that the plant occurred with the parents. See Annals of 

 Botany, x. (Dec. 1896) 621. 



G. germanica is, I think, distinct from G. Amarella. In addition to 

 the above character the leaves are broader than those of G. Amarella, 

 and the colour of the flowers considerably lighter, more blue than 

 purple, and often lilac. It occurs more plentifully where the grass 

 is very short and sparse. A, von Kerner agrees that my Berkshire 

 plant is true germanica. 



G. germanica is recorded for Oxfordshire, Surrey, Bucks, and Hants ; 

 in the latter county it occurs very near to our border, near Water- 

 ship, an extension of the Walbury range of chalk hills. 



MENYANTHES, Linn. Gen. n. 185 (Tournefort, Inst. t. 15). 



M. trifoliata, Linn. Sp. PI. 145 (1753). Marsh Buckbean, Bogbean, 

 Trefoil Buckbean. 

 Trifulium palustre, J. Bauhin. T. paluclosum, Ger. Em. 1194. 



Top. Bot. 281. Syme, E. B. vi. 79, t. 920. Nj'man, 503. Fl. Oxf. 197. 



Native. Uliginal. Marshes, bogs, and borders of slow streams and 

 ponds. Locally common, but absent from large areas. P. May- 

 October. 



First record. M. trifoliata. Dr. Noehden, Mavor''s Agr. Berks, 1809. 



1. Isis. Bogs between the old and new road to Ensham, abundant, 



Baxter in Walk. Fl. By a stream under Wytham Wood. Buckland. 



2. Ock. Wootton, Bosicell. It grows in the j^ond in Lower Farm 



Close, Blewbury, and amongst the rushes in Hagbourn Moor, 



