4 6 2 ANfíALS OP THE BOYAL BOTANIC GAEDEM, CALCUTTA. [6'. HoUrungii
thiuly and fugacioiisly rusty-furfuraceous, tubular-infundibuHforra, rather loosely
sheathing, gradually smaller from the base towards the summit of the axis, horiijontally
truncate, eatii'e and naked at the mouth, very shortly apiciilato at one side,
unarmed ; spikelets arched, their axis cylindraeeous, narrow, rigid, subulate, horizontally
inserted a little above the mouth of their own spathe with a moro or less distinct
axillary callas; the larger ones, the lowest, 8-9 cm. long, with 20-25 flowers on
each side; the uppermost about one-half shorter; spathels shortly infundibuHform
truncate and entire at the mouth, slightly apiculate at one side, more or less
distinctly two-keeled on the side of the insertioi'. of their respective flowers ;
iuvolucrophorum suborbicular-disooid, very shortly stalked or with a short nock
or even subsessile, laterally inserted outside its own spathel at the base of the one
above ; involucre discoid, orbicular, almost esplanate ; areola of the neuter flower
very depressed, linear. Female floioers very small, «.bout 3 mm. long-,
horizontally inserted. Fruiting perianth distinctly pcdieelliform ;
the ;alyx detriangular;
pressedly ventricose, flat at the base, its teeth broadly
the
segments of the corolla as long as the calyx and almost as broad as
its teeth. Fruit
mm. in diam.. very indistinctly
small in 15 series, shining, dirtyniddle,
slightly prolonged into
erosely toothed. Seect not seen
(not quite mature) very small, almost sphaeric,
apiculate; the very small stigmas sessile; scales very ;
straw-coloured, very faintly channelled along the i
a not very adpressed and often darker point, margir
quite mature.
HABITAT.—The Aru Island at Jabu-lengan, collected by me in May 1S73.
OBSERVATIONS.—Related to C. pisiearpiin and C. Uollrun^ii, distinct by its quito
unarmed Icaf-sheaths; the large epetiolate leaves; the rachis clawed beneath, otherwise
totally smooth above from its insertion; the broadly lanceolate equidistant
leaflets which have 5 primary acute costae and many distinct secondary nerves, all
naked on both surfaces; the spikelels with numerous horizontally inserted flowers;
the iuvolucrophorum shortly stalked; fche fruit small pisiform.
PLATE 209.—Calamus aruensis Becc. Hasal portion of a leaf with its leaf-sheath;
upper part of a spadix with young fruit.—From the type-specimen in Herb. Becc.
180. CALAUI-S HOLLRUNGII Becc. in Schum, and Ilollr. Die Flora von Kaiser
Wilhelmsland, 17; Schuni. and Uut. Fl. dcutschen Schutzg. in der
Siidsee, 203 (partly)?; Becc. in Rec. Bot. Surv. Ind. ii, 212.
DESCEiPTroN.—Scandent and apparently rather robust. Leaf-sheaths Leaves
large (not seen entire); petiole (probably very short); rachis very robust, flat
and smooth beneath in its first portion where densely armed above with straight,
ercct 4-6 mm. long prickles; the portion above the middle also flat beneath where
closely armed at the ."ides with small recurved prickles and smootii along the middle;
the upper surface gradually becoming more distinctly bifaoed towards the summit,
spioulous on the salient angle; leaflets not very numerous; subeqiudistant, usually
alternate, 6-10 cm. apart, very firmly papyraceous, greeuish-yc-llow wh«n dry,
slightly paler beneath, broadly lanceolate, usually broadest below the middle,
more gradually acuminate towards the summit than at the base, where acute
c. Hollrungii] BECCAlil. MO.^OGRAPH OF THE GENUS CALAMUS, 4 6 3
distinctly callous beneath in the sinus formed by the backward folding of the
blade at its insertion, tip rigid with spreading subspiny bristles at the sides, ))licate
many-ncrvod, with 5 acute and strong costae and other minor but distinct secondary
nerves, all naked on both surfaces, except on the mid-costa above near the base,
where a few rigid spinules occasionally occur; transverse veinlets fine, numerous
and continuous; margins rather spreadiiigly spinulous from the middle upwards, the
lower one in the upper surface bordered with a narrow polished hand. Male spadix
Female spadix elongate, rather large, decompound, with many partial inflorescenceg;
upper primary Spathes elongate, tubular-cylindraceous, closely sheathing
very thinly and fugaciously rusty-furfuraceous, thinly coriaceous, finely and indistinctly
longitudinally striate, quite unarmed, obliquely truncate, entire and naked at
the mouth, where slightly prolonged at one side into a short triangular erect point;
very suddenly narrowed at the base into a robust obsoletely angular unarmed axial
portion; partial inflorescences strongly arched, their axes robust at the base, gradually
narrowing towards the summit : the largest seen by me 40 cm. long with about 15
spikelets on each side; the upper ones much smaller; secondary apathes tubularinfundibuliform,
rather loosely sheathing, gradually smaller from the base towards the
summit of the axis, horizontally truncate, entire and naked at the mouth, very
shoi-tly apiculate at one side, unarmed; spikelets horizontaily attached above the
mouth of their own spathe with a distinct axillary callus, elongate, slightly sinuous
their axis cylindraceous, narrow, rigid, subulate; the lower ones, the largest, 10-12 cm.
long with i:0-25 flowers on each side; the upper ones shorter with half that number
of flowers; spathels slightly infundibuHform, horizontally truncate and entire at the
mouth, very shortly apiculate at one side; iuvolucrophorum orbicular, discoid, shortly
stalked or with a more or less distinct neck, laterally inserfed outside its own
spathel at the base of the one above; involucre discoid, orbicular, almost explanate;
areola of the neuter flower very depressed, linear. Female flowers very small, about
3 mm. long, horizontally inserted. Fruiting perianth shortly but distinctly pedicelliform;
the calyx depres-edly ventricose, flat at the base, ifs teoth broadly triangular; the
segments of the corolla as long as the calyx and almost as broad as its teeth.
Frxiii (when very young; subsphaeric-pisiform, very indistinctly apiculate; the very
small stigmas sessile; acalcs small in 15 series, shining, of a dirty straw-colour
the margins scarious, erosely toolhed, tip not very adprcssed.
HABITAT.—G-orr New Guinea at Augusta station, Rollrung No. 667 ia He r b .
BeroL and Beccari.
OBSERVATIONS.—Very closely related to C. pisicarpus and C. aruengis, but at
once distinguishable by the leaf-rachis covered in its ujjper surface with numerous
erect straight spinules.
The tj'pe-specimen has an intermediate portion of a female spadix with very
young fruit, 1'2 m. long, but to this specimen and with the same number were
joined a few mature fruits which apparently belong to the same species. They are
very broadly ovoid, rounded at ooth ends, indistinctly apiculate, 12 mm. long, 9
mm. broad, the scales in 15 scries, shining, slightly channelled along the middle,
fitraw-coloured with a reddish-brown intramargina! line, this somewhat extended
towards the apex, which is triangular and not very ad pressed, margins narrowly