150 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [D. Riedelianus 
short and thick; by its fruit being more rounded at both ends; and by 
the axial parts being acutely angular and covered with an adherent, brown, 
furfuraceous indumentum. 
PLATE 60.—Daemonorops Korthalsii Bl. Portion of a sheathed stem with male 
spadices; upper end of a leaf (upper surface); the lower portion of a spadix with 
full-grown fruits. From P, B. No. 1938 in Herb. Beccari. 
56, Daemonorors RrgDELIANUS Bece. in Rec. Bot. Surv. Ind. ii, 226. 
Calamus (sect. Daemonorops) Riedelianus Miq. De. Palm. Arc. Ind. 19 and 
28; H. Wendl. in Kerch. Palm. 287. 
Descriprion.— Apparently scandent. Sheath:d stem 2-2°5 cm. in diam., very densely 
and almost uniformly armed with small, short, very dark, laminar, scattered or 
obsoletely seriate spines, intermingled with numerous small spiculae. Leaves rather 
large; the petiole broad, 10-12 mm. at its base, flattened-biconvex above it, very 
densely spinous all round, but especially above where set with ascendent, straight, 
5-10 mm. long spines; the rachis, in the intermediate portion, convex and armed with 
ternate claws beneath, above with the salient angle slightly prickly; leaflets numerous, 
equidistant, 3-3°5 em. apart, linear-ensiform, broadest below the middle, thence tapering 
slightly towards the base, and gradually acuminate to a bristly tip, papyraceous, 
rather rigid, green and concolorous on both surfaces, subtricostulate, with an acute 
and prominent mid-costa, and one secondsry nerve, stronger than the others, on 
each side of it; transverse veinlets slender, but rather sharp, almost equally distinct 
on both surfaces, moderately crowded, sinuous and interrupted; margins ciliated with 
rather close, blackish, spreading spinules. Male spadiz ............ Female spadix very 
similar to that of D. Gaudichaudii; primary spathes ...... ; spikelets about 3 cm. long 
with 4-5 flowers on each side, at first fugaciously-furfuraceous, then glabrescent, 
their axes angular, sinuous; spathels annular, slightly prolonged at one side into a 
broadly triangular acute point; involucrophorum pedicelliform, 2 mm. or at most 3 
mm. long, non-callous at its axilla, appressed to the axis, angular, narrowing 
considerably to the base, very obliquely produced at the upper end into a broad, triangular, 
sabacute limb; involucre thick, slightly protruding beyond the involucrophorum, flat, 
disciform, orbicular, with a very narrow annular margin; areola of the neuter flower 
concave, niche-like, with a slightly callous punctiform scar, Fruiting perianih sub-ex- 
planate or obsoletely and broadly obconical, and subpedicelliform. Fruit spherical, 13 
mm. in diam., very shortly umbonate-mammillate; scales in 18 longitudinal series, of 
a uniform hazel-nut-brown colour, almost glossy, clearly and narrowly grooved along 
the centre, with a very narrow, scarious, erosely-toothed edge, regularly rhomboidal, 
broader than long, the point obtuse. Seed irregularly globular, slightly flattened on 
the raphal side, 10 mm. long and broad, 8 mm, thick; chalazal fovea small, pit-like, 
round, placed in the centre of the raphal side; albumen deeply ruminated; embryo 
almost basal, slightly shifted to the anti-raphal side. 
