K. flagellaris. KORTHALSIA. 143 
the upper ones slightly smaller; the anse are 8—12 mm. long, thickish and 
Ape have been fleshy. Other parts unknown.) 
HanrrAr.—Duteh Borneo, collected by Hallier E the Borneo-Expedition, 1893- 
94 (Nos. 2135 in Buitenzorg Herbarium.) 
OBSERYATIONS.—AÀ very imperfectly known species, apparently related to K. 
Wallichiafolia on account of its leaves having at the axilla of the petioles a very 
conspicuous callus, leaflets with very obtusely-undulately toothed upper margin and 
thickish, not flattened anse; it is moreover most remarkable for its opposite, or 
nearly so, leaflets ; a character which, if constant and not purely accidental, would 
easily distinguish K. Haliveriana from any other. 
PLate 93.—Korthalsia Hallieriana Becc—The entire type specimen No. 2135 in 
the Buitenzorg Herbarium.) 
Larix Diraewosm.—Korthalsia Hallieriana Bece. sp. nov. Mediocris ; vaginis fere 
inermibus, ocrea brevi, truncata,  mareescenti, inermi; frondibus amplis, petiol 
longiusculo, callo axillari conspicue pradito ; segmentis ansa crassiuscula  suffultis- 
utrinque 5—6, plerumque oppositis, concoloribus, in arene superiori obtuse-undulato- 
dentatis. 
22. KORTHALSIA FLAGELLARISED.—Miq. in Journ. Bot. Neerl. 15 and Prodr. FI. 
Sam. 255, 591;. Bece. Malesia, ii, 276. t. LXIV. f. 3; Hook f. FI. Brit. 
Ind. vi, 476; Ridley, Mat. Fl. Mal. Penins. ii, 219. 
K. rubiginosa Bece. Malesia, ii, 72; Ridley, l. c.; 
K. angustifolia (not of Bl.) Mig. De Palm. Arc, Ind. 1526, excl. var. 8 
Description.—Of middling or rather large size. Sheathed stem 2—3 cm. in dia- 
meter.  Leaf-sheaths smooth or more or less armed especlally on the ventral side 
and at the base of the petioles with scattered small and short prickles, very thinly 
covered, when young, with a powdery down of a light cinnamon-brown colour, 
ultimately glabrous, thinly coriaceous on the dorsal and usually torn and disintegrat- 
ed into a fibrous network on the ventral side. Ocree more or less covered with 
a tobacco-coloured detachable scurf, unarmed, but more or less prickly on their basal 
and ventral sides, exceptionally large, 20—30 cm. long, thinly membranous, non- 
inflated and embracing tightly the stem, almost entire, and truncate at apex in 
newly expanded leaves, split along the side and more or less marcescent, or dis- 
solved. into fibres later. The leaves of very young plants have the blade un- 
divided, plurieostulate, very long-spathulate-cuneate, conspicuously white or white 
rubiginous on the lower surface, 50—60 cm. up to 1 m. long and 10—12 cm. 
broad ; the apex rounded, and deeply toothed, and the base gradually tapering to 
a moderately long spinous petiole. The intermediate leaves of vigorous plants are 
large; 1—1°70 m. long in the pinniferous part, and end in a strong and long 
cirrus, powerfully armed with 3-nate or 5-nate robust claws ; the petiole is flatten- 
ed, 20—35 cm. long, 7—10 mm. broad, slightly concave or flat above, convex below, 
armed on the margins and below with rather robust claws. Rhachis more or less 
