438 DE. A. B. EENDLE— SYSTEMATIC 



foliis anguste linearibus, sub apice ■bispinnloso angvistatis, planis, dentibiis margin- 

 alibus parvulis ; vaginis aiiriculatis, auriculis ssepe falcatis, paucidentatis ; Jloribm 

 solitariis, masculis breviter pcdicellatis, spatba rostrata ore aculeifera ; ovario nudo, 

 stylo stigmatibus duobus temiinato ; fructu anguste oblongo, pericarpio (sicco) 

 tenui ad semen conformante ; testa cum areolis quadratis minutis numerosis 

 longitudinaliter notata. 

 Of slender grass-like habit ; internodes 2*5 to 3 cm. long, becoming shorter near the 

 densely-leaved tips of the shoots, '5 to Q mm. broad. 



Leaves 1"6 to 2 cm. long by -5 to "6 m.m. broad ; marginal teeth J to ^ the leaf-width, 

 18 to 25 on each margin at regularly decreasing intervals from base to apex. Sheath 2 

 by 1*5 mm., raised into longer or shorter auricles, which are often falcately curved, and 

 entire on the inside, with 3 to 5 teeth on the outer edge. Intravaginal scales subulate, 

 •6 mm. long. Spathe of male flower ellipsoidal, narrowing into a somewhat shorter neck, 

 ending in a few unequal teeth. Pericarp conforming to the seed, which is ellipsoidal, 

 oblong, flattened along the raphe, about 2 mm. long, with about 30 rows of small, 

 regularly quadrate, thick-walled pits. 



India — Madras ( Wight) ; Tuticorin ( Wight, herb, propr. no. 1217) ? 

 Java. — [Horsfield). 

 Philippines — Manila (Martens), 



A very doubtful species, of which more material is needed. Evidently near N.foveolata, 

 l)ut distin2:uished bv the smaller leaf -teeth and smaller and more numerous markina^s on 

 the testa. 



The specimens from Tuticorin are included with some doubt. They are old and 

 much broken, with imperfect leaves, and bear no flowers. The ripe seeds are ellipsoidal- 

 oblong, 1*5 mm. long. They may represent a small-fruited variety. 



23. Najas brevisttla, sp. nov. (PL XLII. figs. 152-157.) 

 Monoica, ramis tenui bus elongatis apice subdichotorae ramulosis, ramulis brevibus dense 

 foliatis ; foUis rigidulis e vagina auriculata dentata subfalcat.^ recurvatis, lamina 

 lineari superne angustata, margine cum dentibus ascendeiitibas, e basi lata 

 spiniferis, laminae latitudinis dimidium sequantibus, instructa ; squamulis intra- 

 vaginalibus lineari-subulatis ; jlorihus in ramulis brevissimis axillaribus aggregatis, at 

 perpaucis ; anthera eHipsoidea quadriloculari breviter stipitata cum spatha collo 

 cylindrico spinifero terminata involuta ; ovario nudo cUipsoideo cum stylo brevi 

 cylindrico, apice in stigmata bina diviso ; fructu parvo ellipsoideo cum stylo diu 

 persistente rostrato ; testa brunnea cum areolis subquadratis manifeste lineata. ' 

 A delicate plant with long, slender, spreading shoots, brittle when dry, the lower inter- 

 nodes reaching 2-5 to 3'5 cm. long by -3 mm. or a little more in width. Tips of shoots 

 subdicbotomously branched and densely leaved ; short and leafy branches spring from 

 the main shoot. Leaves at lower nodes elongated, 2 cm. long by '3 mm. broad, on the 

 branchlets only about 1 cm., long ; sheath cylindrical, 1*3 to 2 mm. long, including 

 auricles, which are generally short, but sometimes two-fifths as long as the sheath, and 

 bear several, generally 3 to 7, erect spiniferous teeth ; blade tapering gradually upward, 



