370 Alismacece. [Limnophytum. 



central receptacle, i -celled, i-ovuled, style short, stig^ma 

 simple, ovule solitary, basilar, campylotropous ; fr. of many 

 achenes ; seed erect, testa membranous, endosperm o, embryo 

 hooked. 



Fl. all bisexual i. Alisma. 



Fl, male and bisexual 2. Limnophvtum. 



I. AIiZSBIA, IJim. 

 For characters, see Order, with the fl. all bisexual. — Sp. 10; 

 3 in Fl. B. Ind. 



A. ollgrococcum, F. Mud/. Fragtn. Phyt. Austral, i. 23 (1858). 

 A. glanduloswii, Thw. Enum. 332. C. P. 2318. 

 Fl. B. Ind. vi. 560. 



Rootstock short, sometimes as thick as the thumb, with 

 numerous stout, simple root-fibres; 1. all radical, 3-6 by 2-3 

 in., broadly oval or ovate, obtuse, base cordate, pellucidly 

 punctate, basal lobes ^-| the length of the 1., acute or obtuse, 

 sinus narrow, primary veins 8-17, radiating from the top of 

 the petiole, stout beneath, with many parallel secondary and 

 cross venules, petiole 1-3 ft., stout, angular; submerged 1. 

 narrower, membranous, petiole flexuous ; panicle 6-9 in. 

 broad and long, branches whorled, angular, bracts large, 

 herbaceous, ternately whorled, lower up to 3 in. long, lan- 

 ceolate, acuminate; fl. ternately whorled, about \ in. across, 

 pedicels up to 2 in. long, decurved or divaricate in fr. ; 

 sep. ovate-oblong or orbicular, obtuse, green, gland-dotted, 

 much smaller than the pet., spreading or revolute in fr.; pet. 

 \ in. long, lanceolate, acute, shortly clawed, white or faintly 

 rose-col'd.; stam. very small, anth. subsessile, broad ; carpels 6, 

 whorled, broadly ovoid, style short, slender, terminal, decidu- 

 ous; achenes 2-6, rV-i i"- long, reniformly ovoid, laterally 

 compressed, epicarp thin, endocarp hard, with 4 dorsal, strongly 

 tuberclcd ridges. 



Tanks, &c., in the dry region; rather rare. Kurunegala; DambuUa; 

 Ligiri ; Anuradhapura. Fl. March ; white or pale rose-col'd. 

 Also in India, Trop. Africa, and Australia. 



2. Z.ZIIKNOPIIYTUBI, Miq. 



For characters, see Order, with the fl. male or bisexual. — 



Monotypic. 



Zi. obtusifolium, Miq. Fl. Ind. Bat. iii. 242 (1855). 

 Sui^^ittaria ohtusifolia, L., Moon, Cat. 64. Alisma obtusifolium., Thw. 

 Enum. 332. C. P. 2317. 



Fl 13. Ind. vi. 560. Rheede, Hort. Mai. xi. t. 45. 



