Pkaeger — The Buoyancy of the Seeds of some Britannic Plants. 47 



For the sake of completeuess, I now add the results obtained by Guppy 

 upon species with which I did not experiment; a few further comments on 

 the whole of the evidence available will then be useful. 



Additional Buoyancy Eesults from Guppy's List.* 



Sank at once or in under 1 week, uo mark. Floated for between 1 and i weeks, 1-4 w. Floated 

 for between 1 and 6 months, 1-6 m. ; 6-12 months, 6-12 ra. : 12 months, 12+ m. 



Thcilictrum flavum L. 

 Ranunculus hederaceus L. 



aeris L. 

 Castalia alba Greene. 

 Roemeria hybrida DC. 

 Radicula sylvestris Druce, 

 Arraoracia amphibia Peterm. 

 Cardamine prateusis L. 

 Alyssum maritimum L. 

 Viola tricolor L. 

 Moencbia erecta Gaertn. 

 Myosoton aquaticum Moench. 

 Stellaria Holostea L. 

 Oxalis corniculata L. 

 Impatiens parviflora DC. 



biflora Walter. 6-12 m. 

 Acer campestre L. 

 Lathyrus maritimus Big. 1-6 m. 

 Fragaria vesca L. 

 Saxifraga granulata L. 

 Chrysosplenium alterniflorum L. 

 Myriophyllum spicatum L. 



alterniflorum DC. 

 Oicuta virosa i. 1-6 m. 

 Apium graveolens L. 



nodiflorum Beich. 



inundatum Beich. 

 Slum latifolium L. 1-6 m. 



erectum Huds. 1-6 m. 

 Oenanthe crocata L. 6-12 m. 

 Peucedanum palustre Moench. 1-6 m. 

 Hedera Helix L. 

 Chrysanthemum Leucanthemum L. 



Matricaria Chamomilla L. 

 Tussilago Farfara L. 

 Petasites ovatus Hill. 

 Seneeio palustris Hook. 

 Carduus palustris L. 



arvensis Robs. 

 Tragopogon porrifolius L. 

 Crepis foetida L. 

 Hottonia palustris L." 

 Lysimachia thyrsiflora L. 1-4 w. 

 Pinguicula lusitanica L. 

 Menyantihes fcrifoliata L. 1-6 m. 

 Nymphoides peltatum B. & B. 1-4 w. 

 Convolvulus sepium L. 12+ m. 



Soldanella L. 12+ m. 

 Cuscuta europaea L. 

 Myosotis versicolor Sm. 

 Borago officinalis L. 

 Linaria vulgaris Mill. 

 Veronica Anagallis-aquatica L. 



Beccabunga L. 

 Nepeta Cataria L. 

 Clinopodium Calamintha Kimtze. 

 Scutellaria galericulata L, 12 m. 

 Ballota nigra L. 

 Lamium purpureum L. 



album L. 



Galeobdolon Crantz. 

 Ajuga reptans L. 

 Salicornia europaea L. 

 Suaeda fruticosa Forsk. 

 Beta maritima L. 

 Rumex aquaticus L. 1-4 w. 



* I omit Oalla palustri 



, which cannot claim rank even as an alien in the British flora. 



g2 



