ON NAIAS GRAMINEA DEL., VAR. DELILEI MAGNUS. 327 
° . palus s thi 
character, both in the diagnosis and in Reichenbach’s plate.* In 
the spring and early summer it has large reserve-buds, of the size 
e of its peculiarities is, that it has four or five rows of spines 
or protuberances on the dorsal and ventral edges of many of its 
carpels, and much more prominent than they are in 7. pedunculata, 
4. gibberosa, and Z. polycarpa. 
Delile reports + finding Zannichellia palustris in a lake near to 
to keep an eye upon the possible occurrence of the rare Naias 
muricata, figured and described by Delile; so far it has only been 
recorded for Egypt and Arabia. 
The locality which produces such an extra-anglican species as 
Naias graminea voust be worth exploring for the animal life which 
18 fostered by the same high temperature which has sustained the 
Chara and the Naias. 
XVIJ.—GerocrapuicaL Distrisution. 
Fauna and Flora, p. 416), and Persia, in the ian Archipelago 
and other warm regions of Asia, and probably in Japan. s 
hot occur in + as a colonist, it having been introduced 
(according to the Italian botanists) with East Indian rice, i 
districts Where that cereal is ¢ ted, a the plains of 
Lombardy and Venice ; the Italian localities are given in Cesati’s 
‘Compendio della Flora Italiana,’ as Alagna ra, Balzola 
8 not native in any of its European stations, and it is an 
i It becomes, therefore, an interesting 
question to account for its appearance in a country which does not 
stow the rice which it consumes. 
XVIIJ.—Irs propane Source or ORIGIN. 
When this plant was exhibited at the British Association at 
Southport, in September last year, I expressed the opinion in the 
* Icones Flore Germanice, é&c., vol. vii., fig. 20, pl. xvi. 
t ‘Flore de l’Egypte,’ vol. ii., p. 281; and also on page 75 under No. 872, 
