THE FLORA OF THE MALAY· PENINSULA

344 CXLVII. LlLIACE.E. [Smilax.
EXCLUDED SPECIES
S. SINGAPORENSIS A. DC. Mon. Smilax, 177. "S. calophylla
Wall. Cat. 5131 in Herb. Rich. only" is indeterminable. It
cannot be any part of Wall. Cat. 5131, which is all calophylla,
and it is evident that the label was wrong and the plant is
not from Singapore. It is possibly S. Helferi from somewhere
else.
15. BETEROSMILAX, Kunth.
Climbers resembling Smilax with tubular perianth, 3- to 6-fid.
Stamens 3 connate. Fruit a 2-seeded berry. Species 5. Indo­
Malaya, China.
(I) H. indica A. DC. Mon. Smilax, 43; Ridl. Mat. ii. 108.
Stem slender unarmed. Leaves ovate-Ianceolate, rather thin,
base round, 3 to 8 in. long, I to 3'5 in. wide; nerves 5; petioles
I to I'S in. long. Peduncles solitary, 2 in. long; umbel I in.
through. Stamens connate half-way. Fruit globose,'5 in. through.
Seeds 2, hemispheric. Hab. Singapore, thickets near the sea at
Tanjong Katong (Hullett). Once found only, and now quite
disappeared. Distrib. _ India.
ORDER CXLVIII. PONTEDERIACElE.
Aquatic plants with a short rootstock, and erect or floating leaves.
Flowers in spikes or racemes from the axils of upper leaves,
bisexual, blue, pink or white. Sepals 3 and petals 3, free fugacious.
Stamens 6, one usually the longer. Ovary free, 3-celled or I-celled
with 3 parietal placentas. Style slender. Capsule membranous.
Seeds minute, ribbed. About 36 species, tropics of both hemispheres.
1. MONOCHORIA, Presl.
Leaves radical and solitary at the top of the stem or branches
petioled ovate. Perianth widely expanded or campanulate blue
fugacious. Stamens 6, five steriie, one fertile. Species 5 or 6.
tropics of Old World.
Leaves hastate or cordate; flowers long-pedicelled
fascicled bght blue . . . • . (1) l't'L hastefolia
Leaves narrow hastate; flowers racemose. • (2) M. e1ata
Leaves ovate or linear; flowers short-pedicelled
dark blue (3) M. vaginalis
(I) M. hast::efolia Presl. ReI. Haenk. ii. 128; Hook. fil. F.B.I.
vi. 362; Ridl. Mat. ii. 109. Pontederia hastata Linn. Fl. Zeyl. 129 ;
Roxb. Corom. Pl. ii. t. 63. P. dilatata Andr. Bot. Rep. vii. t. 490.
Rhizome usually short. Leaves I to 2 ft. tall, blade hastate or
deltoid. base cordate or entire. broad. 2 to 6 in. long. 2 to 6 in. wide.