XCIV, GENTIANACE^E. 
437 
Limnanthemum.] 
notch, -25 in. long in flower, lengthening to -5 in. long. Sepals 
lanceolate-linear. Petals very small, white, obovate fimbriate. 
Capsule oblong, beaked with the style-base *12 in. long. Hab. 
Ponds. Not common. Pahang, Kwala Pahang. Malacca (Cum¬ 
ing). Tringganu (Yapp). Rahman, Kota Btujru (Gwynne 
Vaughan). Lankawi (Curtis). Distrib. India, Siam, Ceylon. 
Order XCV. HYDROPHYLLACEAE. 
Herbs. Leaves radical or alternate (rarely opposite) entire or 
lobed. Flowers in scorpioid cymes axillary or terminal, regular. 
Calyx inferior, lobes 5 or more. Corolla funnel or cup-shaped, 
Fig. 114.—Hydrolea zeylanica. 
lobes 5 imbricate or twisted. Stamens 5, on base of corolla-tube; 
filaments filiform. Ovary i-celled; placentas 2, free or parietal 
or 2-celled, with placentas adnate to septum; ovules 2 to many 
in a cell; styles filiform, bifid or simple or 2 free from base. Capsule 
bivalved. Seeds oblong, 2 to many on placenta. Species about 
130, chiefly American. 
1. HYDROLEA, Linn. 
Herbs. Leaves entire, alternate. Flowers blue in racemes 
or cymes terminal. Calyx-lobes lanceolate divided nearly to base. 
Corolla campanulate rotate, lobes imbricate. Stamens 5, anthers 
sagittate. Ovary 2-celled, placentas adnate to dissepiment; 
styles 2 (or 3). Capsule globose or ovoid, septicidal 2- to 4-valved. 
