19 



Aldrovanda vesiculosa Linn. Sp. PI. p. 281 ; Richt. Cod. n. 2226 ; 

 Lam. 111. tab. 220 ; Willd. Sp. PI. I. p. 1543 ; Per?. Syn. PI. L p. 336 ; 

 Spreng. Syst. Veg. L p. 956 ; DC. Prodr. I. p. 319 ; Reichb. Fl. Germ. 

 Excurs. p. 711 ; Roem. et Schult. Syst. Veg. VI. p. 759 ; Ledeb. Fl. Ross. 

 I. p. 262 ; Nyman, Syl. Fl. Eur. p. 229 ; Casp. in Bot. Zeit. (1859) p. 

 117-123, 126-132, 133-139, 141-150, tab. 4-5, et (1862) p. 185-188, 

 201-206, tab. 7 ; Hook. fil. et Thoms. in Journ. Linn. Soc. IL p. 83 ; 

 Wight et Arn. Prodr. Fl. Pen. Ind. Or. I. p. 34 ; Planch, in Ann. Sc. 

 Nat. Ser. 3, IX. p. 304; Clarke in Hook. fil. Brit. Fl. Ind. II. p. 425; 

 Korsh. in Act. Hort. Petrop. XII. p. 311; Makino, Phanerog. et Pterid. 

 Jap. Ic. 111. tab. 38. 



Aldrovanda verticillata Roxb. Fl. Ind. II. p. 112. 



Aldrovanda vesiculosa var. verticillata Darwin, Insect. PI. p. 329 ; 

 Makino, Notes on Jap. PI. XIX. in Bot. Mag., Tokyo, VII. (1893) p. 

 285, tab. 11. 



Aquatic perennial, floating, rootless, weak, diaphanous, green. Stem 

 terete, with many nodes, simple or loosely few- (1-4) branched, foliate 

 throughout, 6-26 cm. long. Leaves numerous, situated on nodes, patent, 

 6-8-verticillate ; whorls approximate, 1^-2 cm. in diameter ; the blade small, 

 cochlear, conduplicate and vesiculose, semiorbicular, with a very minute 

 spinose point (which is the' projecting tip of the midrib) at the top, very 

 shortly stipitate or sessile, minutely hairy towards the centre internally, nar- 

 rowly folded and loosely ciliated on margin, 2|-4| mm. long ; petiole oblong- 

 cuneate or linear-cuneate, longer than the blade, cellular, 1-nerved, 3-7 mm. 

 long, 5-6-long-fimbriate (the hairs nearly as long as the petiole and min- 

 utely spinulose except the base) at the top, in those under the pedicel des- 

 titute of the blade but 6-8-fimbriate (the middle hair very short but others 

 long) at the top. ' Flower normally expanded (for a few hours in day) in 

 air, small, axillary, solitary, pedicellate, ebracteate, a few to a plant, 6 mm. 

 across, greenish ; pedicel erect when flowering and then soon curved down- 

 wards, longer than the flower and leaves, 6-18 mm. long. Calyx deeply 

 5-parted, green ; segments patulous, ovato-oblong or oblong-lanceolate, obtuse, 

 minutely subdenticulate, vein inconspicuous. Petals 5, erect-patent, longer 

 than the calyx, obovato-oblong, rounded-obtuse, membranaceous, with a few 

 delicate veins, marcescent, 3i-4 mm. long. Stamens 5, included ; filaments 

 linear-subulate, erect ; anther broad, didymous, introrse, subconnivent. 

 Ovary ovoid, shorter than the calyx, 1-locular, 5-placentiferous, thin- 

 walled ; styles 5, filiform, shorter than the ovary, patent, then soon strongly 

 curved upwards and its irregularly many-parted terminal stigmas conniv- 



