ON AQUATIC PLANTS 



Calla palustris (Water Arum) 

 is a dwarf-growing Aquatic with 

 creeping stems and erect cordate- 

 shaped leaves. The showy part of 

 the inflorescence is the white fiat 

 spathe. Height about 6in. 



Cladium germanicum(C. Maris- 

 cus) (Marsh Saw Grass) is a hand- 

 some tall-growing British plant, 

 belonging to the Sedge family. The 

 long, rigid, glaucous green leaves 

 are deeply keeled, and very sharply 

 serrated at the edges. Height 4ft. 

 to 5ft. 



Iris Pseudacorus (Yellow Flag 



Fig. 592. — Alisma Plantago. 



Fig. 591. — Acorus Calamus. 



). — This familiar waterside 

 plant is very suitable for 

 exposed situations ; height 

 about 3ft. I. P. variegatus 

 is similar in habit to the 

 type, but the leaves • are 

 beautifully striped with white, 

 which imparts a very hand- 

 some appearance. 



Lysimachia thyrsiflora 

 (Tufted Loosestrife) is a close- 

 growing British plant, with 

 short and compact racemes 

 of small yellow flowers. Height 

 about 2ft. 



Menyanthes trifoliata 

 (Bog or Buck Bean) (Fig. 

 593). — -A very ornamental 

 dwarf-growing British Aqua- 

 tic. The handsome flowers, 

 the segments of which are 

 finely fimbriated on the in- 

 side, are white, tinged ex- 

 ternally with delicate pink, 

 and are borne on erect 

 scapes about 9in.. in 

 height. 



Peltandra virginica 

 (Arrow Arum) is an Aquatic 

 of the Aroid family, with 

 hastate leaves. The flowers 

 are thickly set on a short 



