EE VIST ON OF THE GENUS NAJAS. 413 



ending in two unequal stigmas. Fruit 2 to 3 mm. long, about 6 mm. broad. Seed 

 with 12 to 18 longitudinal rows of transversely-elongated ladder-like pits, in dried plants 

 plainly visil)le through the pericarp. The slight want of symmetry between the two 

 sides of the seed and fruit is due to the raphe, which is conspicuous in the lower lialf of 

 one side of the seed. 



Europe — Generally distributed over the southern lialf of the continent from France 

 through Switzerland, Southern Germany, Austria-Hungary, to South Russia; 

 found also in the Spanish, Italian, and Grecian peninsulas. Seeds recently found 

 fossil by Mr. Clement Reid at West Wittering in Sussex (pleistocene) and in the 

 Cromer forest-l)ed at Pakeheld (preglacial). 

 Asia Minor — Near Rhize, Trebizond (Balcmsa). 

 Syria — Bishet-er-Ram {Fost) . 



Kurdistan — Between Erbil and Altun-Kupri [Haussknecht). 

 Persia — Ispahan, Karmanshah (Maussknecht). 

 Afghanistan (Griffith, no. 5 in Herb. Kew. ; a very lax form). 



India — Bengal, Mahanuddeo {Hook. f. ^ Thomson) , {Griffith, no. 5f»09 1 in part) ; 

 Serampore {Griffith, no. 15G52) ; Moulniein (Pam'A) ; Poiidicherry (P<?rro/^^(?^) ; 

 Madras {Wall. List, no. 45183, in part). 

 BuRMAH — Pegu {Kiij^z, nos. 3295, 3309). N.heteromorpha, Griffith ! (no. 5609/4 in 



Herb. Kew.) is a lax elongated form. 

 Malacca {Griffith, nos. 5609/5, 5609/7). 

 Manchuria— Near Kiu Chau {Neioson) . 



Africa — Libyan desert. In a spring at Bauiti {Ascherson, no. 498). Amucli broken 

 fragment. 



Var. SPiNOSA, var. nov. 



Planta foliis anguste linearibus, inargine et dorso valde dentatis, dcntibus marginalibus 

 patentibus laminae latitudinem subajquantibus vel vix ])revioribus ; fructu brevi. 



Leaves rigidulous, 2 to 2' 5 cm. long, with about a dozen spreading triangular teeth on 

 each margin, tipped with a simple, ascending, brown spine, and almost as many subequal 

 or slightly smaller teeth on the thickened midrib. Sheaths truncate, with several teeth 

 on the upper margin. Seed 1*5 to 1*75 mm. long, narrowly ellipsoidal-oblong, tapering 

 at the tip ; testa with about a dozen rows of well-marked scalariform pits, replaced on 

 the raphe by 4 rows of small, regular, quadrate ones. 



India {Wight, no. 2793). 



16. Najas Kurziana, sp. nov. (PI. XLI. figs. 116-121.) 



Herbula monoica gracillima, foliis tenuibus anguste linearil)us planis, margine cum 

 denticulis minutis numerosis instructo ; vaf/lnis breviter auriculatis, auriculis 

 superne spiniferis ; squamulis intravaginalil)us subiilatis ; Jlorihus aggrogatis ; 

 spatha mascula ellipsoidea, apiee subbreviter rostrata, ore aculeifera ; anthera uni- 

 ioculari (?) ; ovario nudo ellipsoideo, stylo in stigmata duo diviso ; fructu parvo 

 ellipsoideo-oblongo ad semen conformante ; testa in seriebus circa 16 areolamm 

 quadratarum conspicue lineata. 



3r2 



