130. NAIADACE.E. 



emerging and with a hastate or sagittate blade 2-8", usually 4-0" long, 

 usually acute with more or less diverging basal lobes. Petiole very 

 spongy, 3-gonous. Flowers -o-'To" diam., white with usually purple 

 centre, sessile or shortly pedicelled, upper male with longer pedicels, 

 in 3-5 whorls of 3-5 flowers each on a scape (3-more inches long. 

 Achenes in a globose head -6" diam. obliquely obovate, flattened, 

 with broad entire or subcrenate wings. 



Purneah! 'Mou^\ijr. Keiv Herb. \ Sai-o-iija, IJ'oor/ ! Fl. c.s. 



Tlie plant extends to England where it is common in some parts. 



Stoloniferous Avith the "^stolons ending in a tuher. Petals "S-'i" long. The 

 stamens are abont 24 in the male tl.. reduced to staminodes in the female iioAvers. 

 Praiii. 



2. S. guayanensis, H., B., and Kunth. 8yn. S. cordifolia, Roxb. 



Leaves apparently always floating (?), broadly ovate, deeply cordate, 

 obtuse or rounded, 1-4" long by 1-3-5" broad, with rounded auricles 

 and obscure radiating nerves. Petiole long or short, often hairj^ as are 

 the scapes and pedicels. Flowers white -1" diam., in few close irregular 

 Avhorls, usually ternate, the 2-sexual 9-12-androus, the upper male 

 more niimerous ()-12-androus. Petals obovate erose. Achenes flat, 

 surrounded by a broad prominently toothed wing. 



Parneah, JST/)/^ ! Birhlwwn., McLeUan<l\ Ranchi, Mol-bu \ Hazaribagh. CZarte ! 

 Fl. Aug.-Oct. 



Roots a dense fibrous tuft, aj^jiarently annual. Leaf sheaths very Ijroad. then 

 i-ather suddenly contracted to the long tlexuous petiole. Leaf nerves about 0, 

 distinct when dry, reticulate between Anthers cordate at base (they are rather 

 sagittate in mf/itfifulia). 



4. BUTOMOPSIS, Kunth. 



A scapigerous marsh herb somewhat resembling Alisnia in habit, 

 with elliptic leaves. Flowers in bracteate whorls or a terminal umbel. 

 Sepals 3 persistent. Petals 3 white membranous fugacious. Stamens 

 8-12 with oblong anthers. Fruit of 4-6 (6-7, F.B.I.) erect mem- 

 branous follicles. iSeeds very many, minute, smooth. 



1. B. lanceolata, Kunth. Syn. Butomus lanceolatus, Eoxb. 



Erect 8" to 2 ft. high with erect lanceolate or elliptic 3 -7 -nerved 

 leaves 2-6" long with very long petioles enclosed by sheaths below. 

 Scape far exceeding the leaves usually with a single terminal whorl of 

 about 5 flowers -75" diam. on verj' long but unequal pedicels 1-4" long. 

 Sepals oblong-ovate, wrapping rovind the young fruit. Follicles 

 shortly beaked, -35". 



Rather common in wet ]>laces, rice-fields, etc. Sikkim tarai, near Purneah ! 

 Ranchi ! Singbhum ! Manbhum ! Probably in all districts of the provinces. 

 Fl., Fr. Sept.-Jan. 



FAM. 130. NAIADACEiE. 



Aquatic herbs of various habit. Leaves simple, opposite or alternate 

 entire or serrate, submerged or floating, sheathing and sometimes 

 stipulate at the base. Flowers inconspicuous, usually green, 1-2- 



845 



