* 
154 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. ` [D. vagans 
angle, and flat side-faces; leaflets equidistant or nearly so, not very approximate 
(about 4 cm. apart) green on both surfaces, slightly paler beneath, papyraceous, 
rigidulous, linear-lanceolate, broadest about the middle or a little below, tapering 
thence towards the base and gradually acuminate above to a subulate and bristly 
tip, the latter having a rather distinct indentation (marked by a small tuft of bristles) 
on the lower margin, not far from the apex; the leaflets are sub-tricostulate 
above, with an acute mid-costa, spinulous near the apex only, and one 
secondary nerve on each side of it, stronger than the others, and sprinkled with 
short blackish bristles ; on the under surface the mid-costa alone has short 
bristles near the apex; transverse veinlets very minute and ‚innumerable, short 
and much interrupted, almost equally visible on both surfaces; margins acute, very 
minutely and very appressedly spinulous; the largest leaflets of the upper part of 
the plant are 30 cm. long, 15 mm. broad, those nearest the cirrus are shorter and 
less acuminate. Male spadiz ........Fruiting spadiz nodding, rather slender and diffuse, 
35 em, long (in one specimen), supported by a slender, slightly flattened, peduncular 
part of the same breadth throughout and armed all round with irregular whorls of 
black spiculae and flat confluent spines; primary spathes deciduous, not seen by 
me; axial part of the spadix covered with a very thin adherent rusty-brown 
indumentum; the main axis is rather slender, slightly flattened and bears a few erecto- 
patent partial inflorescences (3 in one specimen); these have a distinct axillary callus, 
are 8-10 cm. long, and carry 3-4 spikelets on each side; their axis is slightly 
sinuous and acutely trigonous ; spikelets spreading, or almost horizontal, with a distinct 
axillary’ callus; the largest are about 3 cm, long and have 3-4 subregularly set 
bifarious flowers on each side; their axis is sinuous, rather slender and trigonous ; 
spathels very shortly annular, extended at one side into a short, broad, triangular, 
acute point; involucrophorum shortly pedicelliform, obconical, subtrigonous, tapering 
towards the base, about 2 mm. long, spreading, callous at its axilla, truncate at the 
upper end and almost without a limb; involucre quite on a level with the involucro- 
phorum, flat, discoid, orbicular, also without a distinct limb; areola of the neuter 
flower inconspicuous, Fruiting perianih very broadly obconical, very shortly pedicelliform. 
Fruit spherical, 14-15 mm. in diameter; very shortly umbonate-mammillate ; scales 
in 15 longitudinal series, ‘sharply and narrowly channelled along the middle, regularly 
rhomboidal, of a uniform hazel-nut-brown colour, with slightly paler, almost entire, 
very acute margin, the point sometimes slightly produced but always obtuse. Seed 
somewhat irregularly globular, minutely tubercled, about 1 cm. in diam. ; embryo basal. 
Hasrrat—The Malayan Peninsula at Larat in the district of Perak in open jungle 
on the top of the mountains between 1200-1900 m. elevation, King’s collector, 
(No. 4129 in Herb, Caleutt.) Also in Borneo on the summit of Mount Poe at 
1,300 m. elevation, Forworthy, May 1908 (No, 222 in Herb. Manilla). 
OsseRvATIONS— It is extremely like D.  Kunstlerii, but that is an erect not a 
climbing species. See observations on 2. Kunstlerii. The specimen collected by Fox- 
worthy in Borneo, on the summit of Mount Poe, agrees fairly well with the type of 
D. vagans of the Calcutta Herbarium, only it is more slender, the sheathed stem bein 
only 12 mm. in diameter. It has however the same kind of spinescence, g 
The si 
leaf present has the leaflets somewhat inequidistant and aeos dA n e single 
ore than in 
