lOJVi 
346 cxlyiii. pontederiace^e. [Motiochoria. 
(3) M. vaginalis Presl. Rel. Haenk. ii. 128; Hook. fil. F.B.I. 
vi. 363; Ridl. Mat. ii. 109. Pontederia vaginalis Linn. Mantissa, 
228; Roxb. Cor. PI. ii. t. 110. 
Rhizome, often lanceolate or ovate acute, base rounded, 1 
to 2 in. long, -5 to 1 in. wide. Raceme 1 in. long, 2- or 
3-fiowered. Flowers dark blue, *25 to -36 in. wide. Stamens violet. 
Capsule oblong, nearly -5 
in. long. Hub. Ditches 
and damp ground. Very 
common; whole Penin¬ 
sula. Singapore, Tanglin; 
Loyang; Ang Mo Kio. 
Malacca (Griffith); Bukit 
Panchur, Pahang, Pe- 
kan; Kwala Tembeling; 
Gunong Senyum (Evans). 
Selangor, Ulu Selangor. 
Perak, Ulu Bubong 
(Kunstler). Province 
Wellesley, Permatang 
Bertam. Penang (Curtis). 
var. plantaginea Solms 
Laub. DC. Prod. iv. 524. 
A smaller form with 
narrow, often linear 
leaves, in shallow ditches. 
Common. Hab . Singa¬ 
pore, Tanglin. Malacca, 
Malaka Pondok (Hervey). 
Perak, Ulu Bubong 
(Kunstler). Kelantan, 
Kota Bharu in rice- 
fields. Distrib. Indo- 
Malaya, China and Africa. 
Native name: Rumput 
Ayer. 
Fig. 2or. — Philydrum lanuginosum. 
Order CXLIX. PHILYDRACE2E. 
Herbs with narrow linear leaves. Inflorescence spicate or 
panicled. Bracts rather large. Flowers small, bisexual irregular, 
yellow. Sepals petaloid. Stamens x on the base of the anterior 
petal. Staminodes 2 petaloid. Ovary 3-celled, free; placentas 
3-parietal. Style stout; stigma capitate. Capsule 3-valved. 
Seeds numerous oblong, elliptic pustulate, albuminous. Genera 3. 
Species 3; chiefly Australian. 
