190 
THE FLORIST’S JOURNAL. 
natural order Cyperacece. It succeeds well if planted in a 
loamy soil, in a cistern of good depth, and produces its apetalous 
flowers in great luxuriance. It is from this plant the Egyptians 
made their paper, which was obtained from the pellicle between 
the flesh and bark of the thickest part of the stem, pressed and 
dried. Introduced from Egypt in 1803. 
NYMPHiEA cjerulea, a very ornamental plant, decking the 
aquariums of our stoves with its bright azure blue flowers, 
which it produces in abundance, if planted in a loamy soil with 
a gentle heat, and kept constantly immersed in water. It suc¬ 
ceeds also nearly as well in a pond in a warm situation ; but if 
the season be cold during the time of the expansion of its 
flowers, they seldom or ever expand so well as in a warm close 
atmosphere. This beautiful plant derives its name from Nymphe , 
a water nymph habitation, and belongs to the natural order 
Nymphceacece. Native of Egypt, introduced in 1792. 
Vallisneria spiralis, named in honour of Antonia Val- 
lisneri, an Italian botanist. This curious and remarkable water 
plant grows with great luxuriance if potted in light turfy loam, 
and placed in deep water in a warm atmosphere ; but succeeds 
nearly as well in a conservatory or greenhouse. It requires to 
be kept cool and dry during winter, and removed to the stove 
in February, which causes it to produce its richly tinted brown 
flowers in greater luxuriance, than if kept in heat during the 
winter. It belongs to the natural order Hydrocharacece , and is 
indigenous to the South of Europe. 
Pontederia crassipes. This is an elegant plant, from its 
singularly formed, thick petioles, bright green, smooth, cordate 
foliage, and spikes of lovely blue flowers. It seems almost to 
despise the material in which most other varieties of aquatic 
plants rejoice, and floats about, regardless of any fixed station in 
the element to which it is naturally consigned, but succeeds 
well if potted in rich loamy soil, and placed in shallow water in 
a stove. It is named in honour of Julius Pontedera, a professor 
of botany at Padua ; and belongs to the natural order Pontede- 
raceae. Introduced from Guiana in 1825. 
Elodea guiANENSis, from j Elodes, a marsh, which is its 
natural situation. It produces its white and conspicuous flowers 
about the beginning of August, in a light loamy soil, where heat 
is kept up. Introduced from Guiana in 1820: it belongs to the 
natural order Fluviales. 
