LILIACEAE | 141 
22. PONTEDERIACEAE (PONDWEED FAMILY) 
Subaquatic or marsh herbs, quite glabrous. Leaves erect, the nerves 
parallel or subparallel. Flowers perfect, in spikes 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-oyuled; 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 the Family as given above. (Greek “one” and “to se- 
parate,” allusion to 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 
ELE REIL POREE EP FEET Oe RANT ONES PTR © TENET 1. M. hastata 
Leaves cordate, the basal lobes very broad, not spreading, the pedicels less 
bagel oL) aellenedhlesnaait sethantes table deel aestile settee 1 hadi 2. M. vaginalis 
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 ecm long, slightly 
acuminate, base prominently hastate, the sinus very broad, the lobes 
spreading, oblong-ovate. Inflorescence many-flowered, 4 to 5 cm long, 
spicate. Flowers blue, about 1 cm long, the lower ones with elongated 
pedicels. 
In shallow stagnant water, fi. 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 spicate, 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. (FI. Filip. pl. 466.) 
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 
