34 6 AraceCB. \Cryptocoryne. 



Tube of spathe narrow, longer than the limb. 



Base of 1. cuneate or rounded . . . . 4. C. Walkeri. 

 Base of 1. cordate 5. C. Beckettii. 



1. C. spiralis, Fisch. in Linncea, v. 428 (1830). 



Fl. B. Ind. vi. 494. Wight, Ic. t. 773. Bot. Mag. t. 2220 {Arum 

 spirale). 



Rootstock tuberous, soboliferous, roots vermiform ; 1. 3-8 

 by -J— I in., linear-lanceolate, acuminate or acute, narrowed 

 from the middle to both ends, nearly parallel-veined, base 

 narrowed into a short stout petiole ; spathe subsessile, 3-5 in. 

 long, tube very short, obconic, limb linear-lanceolate, at first 

 twisted, greenish externally, within dark purple, and trans- 

 versely lamellate; ov. 5-6, stigma broadly oval. 



Ceylon, Koenig in Herb. Mus. Brit. 

 Also in Peninsular India and Bengal. 



2. C. Thwaitesli, Schott in Bonplandia, v. 221 (1857). 

 Thw. Enum. 334. C. P. 3464. 



Fl. B. Ind. vi. 495. Engler, Ic. Arac. ined. t. 7. 



Rootstock stout, with very long stout and slender root- 

 fibres; 1. 2-3 by i-i^irt, very shortly petioled, broadly oblong 

 or obovate, tip rounded, base rounded, emarginate or 

 cordate, crenulate, rather fleshy, pustular on the upper sur- 

 face, veins 4-5 pairs from below the middle of the broad 

 costa, diverging, then converging near the tip, transverse 

 venules distant, strong, petiole shorter than the blade, very 

 stout, stipular sheaths subulate ; spathcs 2-3 in., subsessile, 

 tube cylindric, swollen at the base, about ^ shorter than the 

 linear hardly twisted limb, which is smooth and spotted with 

 red-purple within ; anth. 4-6, oblong; ov. 6, styles rather 

 long, stigmas oblong. 



Wet places in forests in moist low country ; very rare. Singhe Raja 

 Forest; Hewesse; Kottawa Forest near Galle. Fl. April, May; whole 

 plant of a dirty violet-purple colour. 



Endemic. 



A coloured drawing of this plant in Herb. Peraden. represents it as 

 wholly of a dingy violet-purple colour. Dr. Scott has kindly had the 

 pustules on the upper leaf-surface examined for me by Mr. Boodle, at the 

 Joddrel Laboratory, Kew, and informs me that they are hollow elevations 

 of the epidermis and subjacent layer, sometimes crowned by a stoma, the 

 hollow space being an exaggeration of the usual air chamber beneath a 

 stoma ; also that the cuticle of the leaf is beautifully striated, as 

 frequently occurs in plants from a damp habitat. — J. D. H. 



3. C. Nevlllll, Trimen Ms. in Herb. Peraden. (1885) (name only). 

 Rootstock stout, cylindric, with long cylindric fleshy root- 

 fibres; 1. long-petioled, 1-3 by \-\ in., linear, or obovate- 

 oblong, obtuse, quite entire, membranous, midrib broad, veins 



