496 CLIVI. AROIDEJE. (J. D. Hooter.) \_Lagenandra. 



diam. carpels in many cycles, free, about in. lonpf. Seeds several in each carpel, 

 minute, basal. 



2. Xi. Thwaitesii, Engler Arac. 621 ; petiole longer or shorter than 

 the oblong- or linear-lanceolate leaf, nerves diverging from the costa, spathe 

 slender convolute at length open, tube very much shorter than the limb. 



CEYLON, Thwaites. 



Eootstock branched. Leaves 4-6 by f-1^ in., base acute or rounded ; petiole 

 2-6 in., rather slender, sheath short. Spathe 1^-2 in., much longer than the 

 peduncle ; tube ovoid ; appendage of spadix very short. Carpels in 8-9 cycles, 

 connate at the base. A much smaller species than L. toxicaria. The specimens 

 are not very good. 



3. Xi. lancifolia, Thw. Enum. 334 ; petiole about equalling the lan- 

 ceolate or ovate-lanceolate leaf, nerves diverging from the costa, spathe 

 oblong beaked rugose within, tube obconic half as long as the limb. 

 Engler Arac. 622. Cryptocoryne lancifolia, Schott in JBonpland. 1857, 

 221 ; Prodr. Aroid. 15 (in part] ; Gen. t. 1. 



CEYLON ; or banks of streams, Thwaites. 



Leaves 2-4 by -!- in., dotted with white, sparsely above, densely beneath ; base 

 rounded or acute ; sheath of petiole short. Spathe 1-2 in., dark purple ; appendage 

 of spadix very short. Carpels 30-40, in 5-6 cycles ; stigma conical. 



4. Xi. XLcenigii, Thw. Enum. 334 ; leaves subsessile narrowly linear- 

 lanceolate acuminate, nerves at first parallel to the costa, peduncle long 

 slender, spathe-tube several times shorter than the subulate limb. Engler 

 Arac. 623; and Ic. ined. No. 15. Cryptocoryne Koenigii, Schott in Bonpland. 

 1859, 81 ; Prodr. 16. 



CEYLON ; in the Singhe-rajah forest, Thwaites. 



Leaves 1-2 ft. by -f in., dotted with white beneath ; costa stout below evanescent 

 above ; petiole reduced to a short sheath. Spathe 3-3 in. long ; peduncle 2-8 in. 

 Appendage of spadix c\a,vate. Carpels about 30, in many cycles, 1-ovuled. Berries 

 smooth. Seed deeply grooved. 



5. Xi. insig-nis, Trim. Cat. PI. Ceyl. 97 ; in Journ. Bot. i. (1885) 

 269 ; petiole as long as the ovate-lanceolate or^ oblong acuminate leaf, 

 nerves very many and slender scurfily papillose/xlivergent from the very 

 stout costa, spathe very large, tube infundibular, limb very broad ex- 

 panded abruptly caudate. 



CEYLON ; Pasdun Korle, Trimen. 



Leaves 12 by 3-4 in., closely dotted beneath. Spathe stoutly peduncled, tube 

 in. ; limb 4-6 in. broad, drooping, crisped and undulate, membranous, purple with 

 white veins (like an Afiscema). 



3. PISTIA, Linn. 



A floating, gregarious, stemless, stoloniferous herb. Leaves sessile, 

 obovate-cuneate, together forming an erect cup. Spathe small, shortly 

 peduncled, tubular below, ooen above. Spadix adnate to back of the tube 

 of the spathe, free above. Male infl. of few sessile connate stamens beneath 

 the apex of the spadix, slits vertical, with a ring of confluent minute 

 neuters below them. Fern. infl. a solitary cpnico-ovoid 1-celled ovary ; style 

 conical, stigma discoid ; ovules many, orthotropous, basal or subparietal. 

 Fruit membranous, few- seeded. Seeds oblong or obovoid, albuminous, 

 testa at length rugose; embryo minute, apical, cuneiform. 



