194 JOUENAL OF THE ROYAL 



HORTICULTURAL SOCIETY. 



P. 'pulverulent a. June. 



P. rosea. April. 



P. sikkimensis. June, July. 



Banunculus aquatica. Water-crow- 

 foot. May on. 



B. Flammula. Small spearwort. 



B. Lingua. Great spearwort. July. 



Bichardia africana. 



Bodgersia peltata. July. 



Bumex Hydrolapaihum. Water- 

 dock. 



Sagittaria. Double varieties. 



S. sagittifolia. July. 



Saururus cernuus. 



Saxifraga diversifolia. 



S. Her cuius. 



S. peltata. April. 



Scirpus lacustris. Bulrush. 



S. zebrinus. 



Senecio Clivorum. July. 



S. japonicus. July. 



Sparganium ramosum. Bur reed. 



Spiraea Aruncus. 



S. kamtsehatica. 



S. kamtsehatica rosea. 



S. lobata. 



S. palmata. 



S.palmata elegans. 



S. Ulmaria. Meadow sweet. 



Stratiotes Aloides. July. 



Trillium grandiflorum. June. 



Trollius. In varieties. May, June. 



Typha. Mace reed. Autumn. 



U tricularia. 



Veronica Beccabunga. 



Villarsia. June, July. 



Zizania latifolia. Autumn. 



