C. discolor. CERATOLOBUS. 7 
triangular elongate point which at the sidés is inconspicuously spinulous-ciliate ; they 
are radiately plicate along 9—11 very slender primary nerves, the nerve of the 
centre being slightly stronger than the others. Spadices long pedunculate. Fruit 
subglobular. Seed ovate, 15 mm. long, 11 mm. broad, rounded at both ends, the 
lower slightly broader than the upper, having a deep elongate chalazal fovea on 
the raphal side, and the surface coarsely pitted, the hollows leading to rather deep 
cylindrical intrusions of the integument, so as to render the albumen ruminated. 
Embryo exactly basal. 
Hasrrat.—On the east side of Sumatra in the Province of Palembang, and on 
the west in the Province of Padang, along the river Singalang (Bl. Miq.), where 
I collected in August 1878 sterile specimens ‘at Ajer Mantjor, about 360 m. above 
the sea level. Fertile specimens have been gathered quito recently (1915) by 
Grashoff (No. 189 in Herb. Bogor. and Becc.) at Lamatang Ulu in Palembang. 
Osservations.—It has the general aspect of C. glaucescens, from which it differs 
not only in being a more slender plant, but also in its leaf-sheaths being non- 
spinous at the mouth and not covered all over with long spines, but only with 
very small minute tubercled spinules or setae; but especially it differs by the 
leaflets not being mealy-glaucous beneath, but almost equally green on both surfaces. 
My Sumatran specimens belong to a not yet flowering plant; the sheathed stem is 
5 mm. in diam., the naked canes 3 mm.; otherwise they are identical with 
Blume's type, from which the description of the seed is drawn up. 
The specimens collected by Grashoff (No. 189) bear spadices with very young 
fruits, have the leaf-sheaths very minutely and densely scabrid ; the bases of the 
petioles are also scabrid. The spadices have a very slender and long peduncular 
part (13—15 cm. long); the spathe is narrowly fusiform, long beaked (13—16 cm. 
‘long, 15 em. wide), very gradually narrows towards both ends, and has acute but 
not winged edges. 
PLATE 2.—Ceratolobus concolor Bl. Portion of the sheathed stem with an entire 
leaf; and portion of the stem bearing a spadix with very young fruits. From 
Grashoff's No. 189 in Herb. Beccari. 
. 3. CERATOLOBUS DISCOLOR . Bece. Malesia, iii, 63. 
Descriprion.—Of moderate or rather large size. The upper part of the sheathed 
stem in adult fertile plants is 2—3 cm. in diam., of the younger plants only 8—10 mm. 
Leaf-sheaths gibbous above, striate pluricostulate. thinly and fugaciously rusty-fur- 
furaceous, covered with small, unequal, erect, brown, glossy spiculae, 4—5 mm. long 
at most, often approximate by their bases and irregularly seriate ; beside this kind 
of spieule, the leaf-sheaths are occasionally provided with some very thinly laminar, 
flaccid lanceolate spines, 2—2°5 em. long and 3—4 mm. broad at their bases; the 
mouth is obliquely truncate, unarmed, bordered by a narrow membranous’ rim, which 
is prolonged into an axillary perishable ligula. Leaves rather large, about 80 em. 
long in the pinniferous part; the petiole 20—30 em. long. subterete or slightly flattened 
especially at its base, 6—10 mm. thick, more or less armed with straight, spreading, 
scattered or shortly seriate spines; rhachis subterete or sub-trigonous being obtusely 
bifaced above and rounded below, more or less armed on the dorsum, especially in 
