834 CXLIIT. ALISMACE.'E. 



nerves, the lower reaching 1 in. long. Flowers many, ^-| in. in 

 diam., white, in whorls at the nodes of the branches of the panicle 4-15 

 in a whorl, the upper whorls mostly male, the lower hermaphrodite ; 

 pedicels 1-3 in. long, those of the male flowers more slender than the 

 female. Sepals 3, orbicular-ovate, concave, libbed, green. Petals 3, 

 broadly obovate, j^ in. long and broad. Filaments 6, flattened, with 

 dilated bases. Achenes in a globose head 4-| in. in diam., obovoid, 

 turgid, wrinkled. Fl. B. I. v. 6, p. 560 ; Micheli, in DC. Monog. Phan. 

 V. 3 (1881) p. 39 ; Woodr. in Journ. Bomb. Nat. v. 13 (1901) p. 429 ; 

 Praiu, Beng. PI. p. 1119. Sagittaria ohtusifolia, Linn. Sp. PI. (1753) 

 p. 993 ; Grab. Cat. p. 199 ; ' Dalz. & Gibs. p. 249.— Plowers : Feb. 

 VEBif. Ncdkut. 



KoNKAN : 8tocks\; tanks throughout the Konkans, Graham. Kanaka: Halyal 

 tank, Ritchie, 1390! Gujarat: Balsell Sj- Gihson: Ankleshwar near Broach, 

 Woodrow, — DiSTRiB. India (W. Peninsula) ; Ceylon, Tropical Africa, Madagascar. 



2. SAGITTARIA, Linn. 



Erect, stemless, usually perennial aquatic herbs. Leaves with long 

 petioles, elliptic, cordate or sagittate. Flowers 1-sexual or polygamous, 

 in paniculate or spicate whorls. Sepals 3, herbaceous, persistent. 

 Petals 3, membranous, deciduous. Stamens in male flowers about 24 

 with only staminodes in the female flowers, or 6-10 in the male flowers 

 with 9-12 in the hermaphrodite ; filaments filiform, compressed. Carpels 

 very many, crowded on a large globose or oblong receptacle, flattened 

 laterally. Ovary solitary, basal ; style ventral or apical ; stigma 

 papillose. Fruit a globose or oblong head of flattened crested or 

 winged achenes. Seed erect, basal ; testa thin ; embryo horseshoe- 

 shaped. — DiSTEiB. Species about 15, temperate and tropical. 



1. Sagittaria sagittifolia, Linn. Sp. PI. (1753) p. 993. Ehizome 

 thick, tuberous, stoloniferous. Leaves radical, 2-8 in. long, very 

 variable, the first leaves of the young plants very slender and very 

 acute, the next one or two simply cordate-oblong, the rest sagittate, 

 acute, smooth, with more or less divergent basal lobes which are 2-3- 

 nerved and narrov^er than the upper part of the blade, Avhich latter is 

 oblong or lanceolate, acute, 5-nerved, the nerves extending from the 

 top of the petiole to the apex of the leaf ; petioles sometimes reaching 

 nearly 2 ft. long, 3-gonous. Scape 6-18 in. long. Flowers ^-| in. in 

 diam., white, often with a purple claw, in 3-5 whorls along the scape 

 with 3-5 (usually 3) flowers in each whorl, the lower whorls female, 

 the upper male, with longer pedicels (lienuaphrodite flowers occur 

 sometimes, but rarely) ; bracts narrowly ovate, membranous. Sepals 

 ovate, acute, much smaller than the petals. Petals large, broadly 

 obovate. Filaments in the male flowers very many, absent in the 

 feniale flowers ; anthers sagittate. Achenes obliquely obovate, flattened, 

 apiculate, wingeil, the wings broad, entire or subcrenate. Fl. B. I. v. 6, 

 p. 561 ; Grab. Cat. p. 199 ; Buchenau, in Engl. & Prantl, Pflanzenf. v. 2, 

 part ], p. 231, fig. 176; Micheli, in DC. Monog. Plian. v. 3 (1881) 

 p. 66; Woodr. in Journ. Bomb. Nat. v. 13 (1901) p. 429 ; Prain, Beng. 

 PI. p. 1120 ; Syme, Eiig. Bot. ed. 3, v. 9 (1869) p. 68, t. 1436 ; Watt, 

 Diet. Econ. Prod. v. (i, part 2, p. 383. — Flowers : Sept. 



Eare in the Bombay Presidency. Konkan : Stocks ! ; Malwiin, Woodrow. — Distrid. 

 Europe, Asi:i, N. America. 



