Materials for a Flora of the Malayan Peninsula. 109 



Leaves hastate or cordate. Flowers long- 



pedicelled ... ■•• 1. 21. hastaefolia. 



Leaves ovate to linear. Flowers short-pedi- 



celled ... ... ... ... ... ... 2. 21. vaginalis. 



1. M. HASTAEFOLIA, Presl. Eel. Haenk. II. 128. Ehizome usual- 

 ly short. Leaves several 1 to 2 feet tall, petiole sheathing at the base, 

 blade hastate or deltoid, base broad or cordate, 2 to 6 inches long 2-6 

 inches wide. Flowers crowded on a short 2 inch raceme included in 

 the sheath of the leaf, rachis li inch long or less, pedicels i to 2 inches 

 long. Sepals oblong obtuse i inch long. Petals broader, all violet 

 with green keels. Stamens 4 yellow short with violet filaments fertile, 

 one longer olive green. Style stout curved. Stigma capitate. Capsule 

 oblong globose nearlv h inch long. Seeds oblong ribbed numerous. 

 Kunth. Enum. IV. 133. Miq. Fl. Ind. Bat. III. I. 518. Hook. fil. 

 Fl. Brit. Ind. IV. 362. M. hastata, Solms. Laub. A. De C. Monogr. 

 Phan. IV. 523. M. dilatata, and M. sagittate/, Kunth. I.e. 13-1. 

 Pontederia hastata, Linn. Fl. Zeyl. 129. Mantissa 363. Eoxb. Fl. 

 Ind. II. 121. Corom. PI. II. 6, t. 63. P. saggitata, Eoxb. Fl. Ind. 

 II. 124. P. dilatata Andrews, Bot. Eep. VII. t. 490. Buch. Ham. 

 Syme's Embassy 475. Plate. 



Singapore: Galang; Orchard Eoad etc., (Eidley) ; Malacca: Nyalas 

 (Derry 233) ; Sungei Ujong : Kwala Pedas (Eidley); Peaang: Pekan 

 (Eidley); Perak: Ulu Slim (King's Coll. 10,889); Penang : (Curtis) 

 Province Wellesley. Distrib. India, Malay Archipelago and China. 



Native name " Chacha Layer;" " Kangkong Ayer." Common 

 in ditches and swamps. 



2. M. VAGINALIS, Presl. Eel. Haenk. II. 128. Ehizome long 

 creeping, or short. Leaves scattered on the rhizome or tufted, petioles 

 about 6 inches long, blade ovate lanceolate or ovate acute base round- 

 ed, dark green 1 to 2 inches long $ to 1 inch wide. Bracts narrow 

 lanceolate i inch long. Eaceme an inch long 2 to 3 flowered. Flowers 

 blue i to f inch across. Sepals linear oblong i inch long violet, keel 

 green. Petals broader and darker coloured. Stamens 6, 5 short, fila- 

 ments filiform thickened at the base violet. Anthers small elliptic, 

 sterile, 1 much larger, stouter. Anther large linear oblong. Ovary 

 elliptic conic. Style stout alternate upwards. Stigma lateral linear. 

 Capsule oblong nearly half an inch. Seeds minute elliptic longitudinal- 

 ly ribbed. Kunth. Enum. IV. 134. Solms-Laubach A. De C. Monogr. 

 IV. 524. Miq. Fl. Ind. Bat. III. 548. Hook. fil. Fl. Brit. Ind. VI. 363. 



Pontederia vaginalis, Linn. Mantissa 228. Eoxb. Fl. Ind. II 121 

 Cor. PI. II. t. 110. 



Singapore : Tanglin, Loyang (Eidley 6688). Ang Mo Kio (Eidley 

 4598) ; Malacca : Bukit Panchur, (Eidley) ; Pahang : Pekan, Kwala 

 Tembeling (Eidley 1572) ; Selangor : Ulu Selangor (Eidley 10,518). 



