NATURAL HYBRIDS, 167 
Potamogeton crispus x perfoliatus (P. Cooperi) 
x obtusifolius (P. Bennettii) 
“ Babington’s Manual,” 9th ed., H. & J. Groves. 
polygonifolius x rufescens (P. spathulatus) 
“Kerner’s Natural History of Plants,” vol. ii. p. 586. 
Carex canescens x lagopina (C. helvola) 
paniculata x remota (C. Boenningbauseniana) 
aquatilis x salina (C. Grantii) 
x elata (C. hibernica) 
“ Babington’s Manual,” 9th ed., H. & J. Groves. 
flava x fulva (C. xanthocarpa, Degl.) 
fluitans x plicata ? (G. pedicellata, Town.) 
“ Journal of Botany,’’ 1894, p. 168. 
flava x fulva 
“London Catalogue.” 
Alopecurus pratensis x geniculatus (A. hybridus) 
“ Journal of Botany,” 1901, p. 232. 
“ Babington’s Manual,” 9th ed., H. & J. Groves. 
Polypogon monspeliensis x Agrostis alba (Polypogon littoralis) 
“ Babington’s Manual,” 9th ed., H. & J. Groves. 
Glyceria fluitans x plicata (G. pedicellata) 
Sclerochloa distans x procumbens (S. distans, var. pseudo-procumbens) 
“ Babington’s Manual,” 9th ed., H. &. J. Groves. 
Festuca pratensis x Lolium perenne (Festuca pratensis, var. F. loliacea) 
“ Babington’s Manual,’ 9th ed., H. & J. Groves. 
elatior x Lolium perenne (F. loliacea, Huds.) 
Above Ernsford. 
“‘ Journal of Botany,” 1894, p. 149. 
Asplenium Trichomanes x Ruta-muraria (A. Clermont) 
“ Babington’s Manual,” 9th ed., H. & J. Groves. 
Ruta-muraria x septentrionale (A. germanicum) 
Kerner, “ Natural History of Plants,” vol. ii. p. 586. 
Mr. W. H. Beeby, writing on Natural Hybrids in the “Journal of 
Botany,” 1892, p. 209, gives the following list of hybrids, selected from 
Dr. Focke’s Pflanzen-Mischlinge, which have not yet been noted in this 
country, the parents being British or admitted to a place in British floras. 
Ranunculus acris x bulbosus 
sardous x sceleratus 
Papaver dubium x somniferum 
Rhoeas x somniferum 
dubium x Rheeas 
Nasturtium amphibium x sylvestre 
palustre x sylvestre 
x amphibium 
Cardamine amara x sylvatica 
* Helianthemum Chamecistus x polifolium 
Viola arenaria x canina 
x sylvatica 
lactea x Riviniana 
Dianthus deltoides x Armeria 
