THE SCTTAMINE7E OF THE PHILIPPINES. 
193 
the plant, var. argyrophyllus, is the only at all distinct one, and there are interme- 
diate forms between the large typical form and that. The chief variations in the 
plant lie in the amount of pubescence, the size of the flowers and of the spike, the 
amount of rose-tinting of the corolla, and the amount of yellow in the lip. 
2. C. Clemensae sp. nov. 
Rhizome woody. Stem 1 m or more tall, thick. Leaves oblanceolate, 
acuminate, narrowed at the base, 12 cm long, 4 £m wide, the upper sur- 
face glabrous except the midrib, the lower surface covered with appressed, 
silky hairs; sheath 2 to 4 cm long, ribbed, thickly hairy; ligule ciliate; 
petiole densely hairy. Inflorescence from the rhizome, the peduncle thick, 
about 3 cm long, covered with sheathing bracts, hairy. Spike 8 to 10 cm 
long, 7 cm thick, red. Bracts lanceolate, closely ribbed, silky-hairy, 3 
cm long, 1 cm wide, with a stout thorn-like muero 5 mm long. Inner 
bract similar but narrower, 2.5 cm long, 4 mm wide. Calyx tubular, 
with three short, ovate, mucronate, pungent lobes, densely hairy, 3 cm 
long, 1 cm thick. Corolla white, the tube shorter than the calyx, hairy, 
the lobes linear-oblong, acuminate, acute, densely hairy outside, glabrous 
within, 2 cm long, nearly 1 cm wide. Lip 3 cm long, the center fleshy- 
papillose, the margin undulate, crisped, glabrous. Stamen shorter, the 
anther linear-oblong, the connective linear-oblong, the apex subacute, 1 
cm long. Stigma very large, flabellate, reniform, the margins ciliate. 
Mindanao, Lake Lanao, Camp Keithley, Mrs. Clemens 1173. 
A very striking plant with the habit of Costus globosus Blume, but distinct in 
its pubescent white corolla, very long connective-crest, and large reniform stigma. 
MAR ANT ACE rE. 
16. DON AX Lour. 
Stems tall, shrubby, much branched. Leaves ovate or oblong, the 
petiole short ; ligule none ; sheaths long. Panicles erect or pendulous, 
lax. Bracts narrow-lanceolate. Blowers small, white. Corolla-tube 
usually long. Staminodes obovate, unequal. Ovary 3-celled, the cells 
1-ovuled. Style stout, incurved. Fruit usually indehiscent, 1- to 3- 
seeded, globose or trigonous. Seeds globose or hemispheric. 
Species 5, Indo-Malayan. 
1. Donax cannaeformis Rolfe in Journ. Bot. 45 (1907) 243. 
Thalia cannaeformis Forst. f. FI. Ins. Austr. Prodr. (1790) 1. 
Ilythuria cannaeformis Baf. FI. Tellur. 4 (1836) 51. 
Actoplanes cannaeformis K. Schum. in Pflanzenreich 1 1 (1902) 34. 
Donax arunclastrum K. Schum. in Pflanzenreich 1 1 (1902) 33, quoad philip- 
pinense, non Lour. 
Stems 2 to 3 m tall. Leaves ovate, thin, glabrous, 15 to 18 cm long, 
9 cm wide; petiole 1 cm long. Panicles 15 cm long or less, few-branehed, 
the nodes hairy. Bracts papery, lanceolate, acute, 3 cm long. Flowers 
white, 3 cm long. Calyx-tube 1 cm long, the lobes lanceolate, acute, 
ribbed. Corolla-lobes linear-oblong, longer than the tube. Staminodes 
