194 
RIDLEY. 
obovate, large. Lip smaller, entire, obovate, clawed. Anther linear, the 
filament and lobe linear, the lobe long, linear, obtuse. Ovary silky. 
Fruit sparingly hairy, globose, 1 cm thick, 1-seeded. Seed oblong, rather 
strongly wrinkled. 
Luzon, Province of Laguna, Cuming Jj65 : Province of Isabela, Casiguran, Bur. 
Sci.. 2988 Mearns: Province of Cavite, For. Bur. 7619 Rosenbluth: Province of 
Laguna, Bur. Sci. 6022 Ifrpbinson: Province of Benguet, Sablan, Elmer 6104: 
Province of Pampanga, Arayat, Merrill 1412: Province of Bataan, Merrill 1546, 
Whitford 59, Williams 4: Province of Nueva Viscaya, Merrill 230: Province of 
Tayabas, Gregory 100. Mindoro, For. Bur. 3690 Merritt; Paluan, Merrill 945; 
Pola, Merrill 2453. Culion, Merrill 660. Palawan, Bur. Sci. 763 Foxworthy, 
Bur. Sci. 303 Bermejos. Balabac, Bur. Sci. 454 Mangubat. Camiguin, Babu- 
yanes Islands, Bur. Sci. 3933 Fenix. Mindanao, Davao, Copeland 445, De Vore 
it Hoover 198, 240: District of Zamboanga, Copeland s. n. : Province of Misamis, 
For. Bur. 4144 Hearns it Hutchinson : Lake Lanao, Mrs. Clemens 90. 
Java and Celebes to New Guinea. 
D. cannaeformis Rolfe most closely resembles D. grandis Ridl. in its size and 
fruit, but is easily distinguished by its larger flowers, its stamen with a long- 
linear lateral lobe, its silky-pubescent ovary, and its fruit covered thinly with 
hairs. The seed is more oblong and wrinkled. 
K. Schumann in Pflanzenreich 1 1 has made a sad mixup in this simple genus. 
At present only four species are known, as follows : 
I), arundastrum Lour., a dwarf plant with larger flowers than the others, and 
a turbinate 3-seeded fruit. It is abundant on river banks from Siam, Cochinchina 
and India to the Malay Peninsula. 
D. parviflora Ridl., a native of the Malay Peninsula. 
D. grandis Ridl., a very large plant, with globose, glabrous, 1-seeded fruits and 
smaller flowers, ranging from Siam to Singapore. 
D. cannaeformis Rolfe, ranging from Java to New Guinea and the Eastern 
Archipelago, an often tall plant with larger flowers than D. grandis, and 1-seeded 
hairy fruit. 
17. PHACELOPHRYNiUM K. Schumann. 
Tufted herbs with long-petioled leaves. Inflorescence a dense or 
interrupted panicle of spikes, with distichous bracts, from a leaf-petiole. 
Flowers in pairs or threes, pedicellate. Bracteoles two to each flower. 
Sepals linear or subovate. Corolla-tube short or very short, the lobes 
oblong. Lip with an oblique villous ridge. Petaloid stamen spathu- 
late or ovate, cucullate,- short. Ovary 3-celled. Capsule 3-angled, 3-, 
rarely 2-seeded. Seed 3-angled. 
Species 7, Nicobar Islands, the Malay Peninsula and Archipelago. 
1. P. interruptum K. Sclium. in Pflanzenreich 1 1 (1902) 121. 
Stems 2 to 3 m tall. Leaves lanceolate or elliptic-lanceolate, 30 cm 
long, 9 to 11 cm wide, glabrous; petiole 3 to 5 cm long; sheath glabrous. 
Inflorescences usually three, interruptedly panicled, 12 to 20 cm long, 
the internodes about 8 cm long, the racemes fascicled, fairly dense, 
four together, 5 cm long. Primary bracts oblong-lanceolate or ovate, 
4 cm long or less. Floral bracts about 8, oblong, obtuse, fleshy, 1 cm 
long. Flowers yellow, in pairs on pedicels 5 mm long. Ovary triquet- 
