C. digitatus] BECCARL. MONOGRAPH OF THE GENUS CALAMUS. 167 
and the side ones, when these are present, quite free and very approximate to the 
terminal pair, or exceptionally 15-20 mm, apart, and . therefore sub-pinnately 
et; furthermore the leaflets are oblong-spathulate, or oblanceolate, slightly narrowed 
at. the base, enlarged upwards, where somewhat convex above and very suddenly: 
contracted into a short bristly-brushed tip, 20-30 cm. long and 3-65 cm. broad 
(the lower ones usually slightly narrower than the upper ones), chartaceous, rigidulous, 
shining and acutely 3- or exceptionally in the terminal leaflets 5-costate above 
(the mid-costa the strongest), with intermediate, often rather prominent, secondary 
coste and other minor nerves; all nerves naked on both surfaces; margins acute, 
smooth ; the lower margin hated with a polished band as in C. pachystemonus ; 
transverse veinlets slender, sharp and crowded, Male and female spadices very much 
the same, very slender, 1-1°5 m. long, flagelliform, terminating in a very 
slender, filiform, aculeolate appendix with a callous swelling at their insertion and 
a transverse rima in their upper axilla, simply decompound, with 2-6 partial 
inflorescences; primary spathes tubular, very closely sheathing, very narrow, the 
lowermost flattened, spinulous near the base, the upper ones cylindrical, aculeolate, 
truncate at the mouth, acute or acuminate at one side and often split at the 
apex; partial inflorescences straight, elongate, 8-15 cm. long, narrow, dense, 
bearing distichously. 10-20 short approximate spikelets; secondary spathes tubular 
infundibuliform, glabrous, striately veined, longitudinally truncate and not ciliate at 
the mouth, apiculate at one side; spikelets inserted just at the wouth of their own 
spathe, arched or subscorpioid and strongly deflexed, with a distinct callus and a 
transverse rima in their upper axilla. Male spikelets 8-10 mm. long, with 5-8 
(seldom more) flowers on each side; spathels very crowded, concave, scale-like, 
broadly-ovate, acute; involucre dimidiately cupular, obliquely truncate, flat and two- 
keeled on the side next to the axis. Male flowers very closely packed, slender, — 
cylindrical, curved or subfaleate, rather obtuse, 4 mm. long, 1 mm. thick; calyx 
campanulate, strongly striately veined with 3 short, broad, acute lobes; corolla two 
and a half or three times as long as the calyx, divided down almost to the base into 
3 linear, acute, striate segments; stamens. 6, arranged in two series, 3 longer than 
the others, their filaments thickened at the base, subulate and not inflected at the 
apex; anthers lanceolate-sagittate, dorsally attached (erect and not versatile during the 
anthesis ?) ; their connective perfectly black when dry: rudimentary ovary formed by 
3 small clavate bodies which are shorter than the filaments. Female spikelets larger 
than the male ones, the largest 2 cm. long, with 8-10 very approximate flowers on 
each side; spathels very short and broad, subspathaceous, strongly striately veined, acute 
at one side; involucrophorum obiiquely infundibuliform, truncate, almost completely 
sunk in its own spathel and attached to the base ot the one above; involucre eupular, 
rather deep, entire, obliquely truncate; areola of the neuter flower very «large, 
broadly ovate, acute, deep, sharply defined by a raised border, Female flowers ovoid, 
acute, about 3 mm. long; ealyx divided into 3 ovate, acute, striately-veined lobes; 
corolla about one-third longer than the calyx, its segments striate, lanceolate, acute; 
stemens with filaments united at the base and dentiform in the free part. Neuter 
flowers scarcely smaller than the fertile ones. Fruiting perianth explanate under the 
fruit, not pedicelliform. Fruit globular, 9-10 mm. in diam., very shortly mucronate ; 
scales in 12 series, distinctly longer than broad, faintly channelled along the middle, 
N 
