LILIACEAE 141, 



22. PONT.EDERIACEAE (Pondweed Family) 



Subaquatic or marsh herbs, quite glabrous. Leaves erect, the nerves 

 parallel or subparallel. Flowers perfect, in spHces or racemes from the 

 sheath of the uppermost leaf, bracts sheathing, irregular. Perianth un- 

 equally 6-partite, blue, marcescent. Stamens 1 to 6, inserted at the base 

 of the perianth-lobes; anthers erect or versatile, one longer than the others. 

 Ovary free, 3-celled, many-ovuled; style slender; stigma subentire or lobed. 

 Fruit a membranaceous, loculicidally 3-valved capsule. Seeds small, albu- 

 men horny or flower-like. 



Genera 5, species about 21 in. all warm and tropical countries, represented 

 in the Philippines by the following genus only. 



1. MONOCHORIA Presl 



Characters of i,he Family as given above. (Greek "one" and "to se- 

 parate," allusion toi one stamen being longer than the others.) 

 Species about 6, tropics of the Old World, 2 in the Philippines. 



Leaves hastate, the basal lobes spreading, oblong-ovate, the blades up to 

 60 cm long; lower pedicels 1.5 to 2.5 cm long, the upper ones much 

 shorter 1. M. haatata 



Leaves cord&te, the basal lobes very broad, not spreading, the pedicels less 

 than 1 cm long 2. M. vaginalia 



1. M, hastata (L.) Solms. Calaboa (Tag.). 



Leaves long-petioled, the petioles stout, up to 60 cm long, sheathing 

 below, the blade broadly ovate, coriaceous, 10 to 30 cm long, slightly 

 acuminate, base prominently hastate, the sinus very broad, the lobes 

 spreading, oblong-ovate. Inflorescence many-flowered, 4 to 5 cm long, 

 spieate. Flowers blue, about 1 cm long, the lower ones with elongated 

 pedicels. 



In shallow stagnant water, fl. most of the year; throughout the Philip- 

 pines. India to southern China and Malaya. 



2..M. vaginalis (L.) Presl. Calaboa (Tag.). 



Smaller than the preceding, the petioles usually less than 30 cm in length. 

 Leaves broadly ovate to ovate or oblong-ovate, sharply acuminate, base 

 cordate, the lobes very broad, rounded, not spreading, or base even rounded, 

 6 to 10 cm long. Inflorescence spieate, 3 to 6 cm long, few-flowered. 

 Flowers blue, about 1 cm long, their pedicels all less than 1 cm long, and 

 of about the same length. (Fl. Filip. pi. i66.) 



In open wet grass lands, marshy, places, etc., fl. most of the year; 

 throughout the- Philippines. India to southern China and Malaya. 



23. LILIACEAE (LiLY Family) 



Herbs with fibrous roots or from rootstocks, bulbs, or corms, sometimes 

 shrubby and tree-like, or climbing and armed with . prickles or spines. 

 Leaves various. Flowers perfect or sometimes unisexual. Perianth thin 

 or petaloid, 6-merous, in 2 series, rarely, 8- or 10-merous, imbricate in bud. 

 Stamens 6, rarely 3 or fewer, the filaments free or connate. Anthers 

 oblong to linear, often versatile. Ovary superior, 3-celled; ovules 2 to many 



