170 ANNALS OF TH: ROYAL BOTANIC GARDEN, CALCUTTA. [2. formicarius 
Mr. Ridley mentions also Borneo as a locality for D. verticillaris, but I have 
seen no specimen thence. 
Piatt 68.—Daemonorops verticillaris Mart. Upper portion of the sheathed stem 
with the base of a spadix; male spadix in flower; branchlet with full grown flowers 
in bud; outermost spathe; portion of a leaf, from near its base (undersurface), 
From Scortechini’s No, 125° in Herb. Beccari. 
Prare 69.— Daemonorops verticillaris Mart, Upper portion of leaf-sheath with 
the lower portion of a full grown fruiting spadix and the base of a petiole ; two 
entire seeds, and one in halves longitudinally cut through the embryo. From 
No. 6388 in Herb. Calcutta. Upper end of female spadix with very young /fruits, 
from No. 546 in Herb. Calcutta. 
65, DarMoNOROPs FORMICARIUS Becc. Nelle Foreste di Borneo (1902) 608, and in 
Rec. Bot. Surv. Ind. ii, 226. 
Descriprion.—Scandent, slender and at times very slender. Sheathed stem 
8-20 mm. in diameter.  Leaf-sheaths non-gibbous above, obliquely truncate, and densely 
bristly at the mouth, each furnished with several membranous spieuliferous collars, 
of which two are usually paired, and are very large and broad; these latter are opposed, 
i.e. the lower is turned upwards, the upper. downwards, thus interlacing their spines, 
and forming complete and closed ant-harbouring galleries; the other unpaired collars 
are smaller, horizontal or deflexed; the spiculae edging the membranous collars are 
very long, shining, black or spadiceous, excessively slender and brittle, eaves rather 
elongate, but very variable in size, according to the general dimensions of the plant, 
and terminating in a more or less elongate, at times rather short, slender cirrus: 
petiole elongate, 25-35 cm. long, 4-5 mm. broad, somewhat flattened-biconvex, bai 
at the base on the very obtuse edges, and frequently aiso on the under surface along 
the centre, with a few 4-5 cm. long, straight, slender, light-coloured spreading 
spines, and higher up with short prickles; upper surface quite smooth ;  rachis 
armed beneath with very small, solitary claws, which become ternate, but never very 
robust, on the cirrus; above, the rachis has the salient angle narrowly furrowed 
along its centre, the furrow being produced by the decurrent basis of the mid-costae 
of the segments, which run parallel, and very close together, but do not unite on 
the edge of the salient angle ; leaflets numerous, equidistant, approximate (10-15 mm 
apart) narrow, linear-lanceolate, the medials varying, according to the size of 
the leaves from 15-27 cm. in length and from 10-15 mm. in width, very 
thinly papyraceous, green, slightly paler beneath, broadest below the middle, then 
tapering somewhat towards the base but gradually diminishing above to a very 
acuminate and bristly tip,  subtricostulate, de., their  mid-costa is acute and 
bristly near the apex, and one nerve on each side of it is slightly stronger 
than the others but both are furnished with several blackish sub-bristly spinules ; under- 
neath the mid-costa alone is finely and rather closely bristly ; transverse veluleta not 
very numerous, tra'slucent, much interrupted, rather sharp on both surfaces ; margins 
rather spreadingly ciliate-spinulous. Male spadiz . . . . . . Female spadix axillary 
