C. seabrifolius.| ^ BECCARI. THE SPECIES OF CALAMUS.—SUPPLEMENT. 57 
triangular, dorsally keeled, acuminate point, the margins of the mouth entire, 
glabrous; the lowermost spathe is unarmed, flat on the axial side, convex on the 
back and with very sharp margins; the upper spathes are slightly flattened, keeled and 
more or less armed, especially on the suddenly attenuated slerder base, with scaitered 
very sharp claws or quite smooth; partial inflorescences arising erect from inside 
the mouth of their respective spathes, then strongly arched-s corpioid ; the largest, 
lowest, is about 20 cm. long and has several alternate, unilateral, gradually decreasing 
spikelets; upper partial inflorescences gradually smaller; secondary spathes glabrous, 
smooth, tubular-infundibuliform, truncate and entire at the mouth, acute at one 
side; spikelets attached’ at or slightly above the mouth of their own spathes 
with a distinct axillary callus, spreading, arched scorpioid; the lower and largest 
are 4-6 cm. long and have 2 series of rather distant assurgent flowers, each series 
being of 8-10 flowers; upper spikelets gradually shorter, the uppermost with 2-3 
flowers only; spathels tubular-infundibuliform, truncate at the mouth with entire 
glabrous margin, acute or apiculate at one. side; involucrophorum attached outside its 
own spathel at the base of the one above, calyculiform, subdiscoid, distinctly 
pedicellate ; involucre shallowly cupular or pateriform, orbicular, entire; areola of the 
neuter flower obscurely lunate and with a conspicuous central tubercle, sometimes 
transformed into a short callous pedicel. Female flowers oblong or narrowly ovoid, 
3-5 mm. long, slightiy narrowed to the summit; the calyx glabrous, obsoletely striately 
veined, very shortly 3-toothed; the corolla as long as the calyx; the ovary is acute 
and protrudes beyond the perianth and is crowned by the narrow acute spreading 
stigmas. Fruiting perianth pedicelliform, the lobes of the calyx and the segments of 
the corolla almost erect. fruit obovate, rounded above and very suddenly terminating 
in a distinct slender mucro, crowned by the very small stigmas: it tapers gradually 
to an acute base, is 10-17 mm. long (inclusive of the perianth and the mucro,; the 
scales are squarrose or rather loosely imbricate, arranged in 12 longitudinal series, 
have a triangular obtuse point, are flattish, very faintly grooved along the centre, dull 
pale yellowish, with narrow, almost entire, black margin. Seed not seen when quite 
mature. 
Hasrtat.—Borneo; at Puak in Sarawak, collected by Ridley in September 1905, | 
(No. 12406 in Herb. Kew.); also at Kuching (Hewitt in the Kew and Manila Herbaria). 
Osservations.—It is a near ally of ©. hispidulus, C. pilosellus, and C. sarawak- 
ensis; from the last it is at once distinguishable by its leaves with their 
numerous cquidistant leaflets; from C. hispidulus it differs in the smooth leaf-sheaths, 
and in the shape of the fruit, which in @. scabrifolius tapers to a very acute base 
besides other characters in the leaflets. It most resembles €. pilosellus, differing 
however from that species also in the smooth and not scabridulous leaf.rachis. The 
chief difference lies in the  leafiets which are larger, less numerous and are 
rendered scabrid on both surfaces by innumerable hairs resting on tuberculiform bases 
which although very small are visible to the naked eye. 
SuPPL. PLATE 28.—Calamus scabrifolius Bece. An entire leaf in two parts; | 
female spadix in flower; detached fruits. From  Ridley's specimen No, 12406 in 
the Kew Herbarium. 
Ann. Roy. Bor. Garp. CarcurrA Vor, XI. 
