The Philippine Journal of Science, C. Botany. 
Vol. XII, No. 2, March, 1917. 
A NEW SPECIES OF CALAMUS FROM AMBOINA 
By 0. Beccari 
{Florence, Italy) 
CALAMUS ROBINSONIANUS Becc. sp. nov. 
Scandens, gracilis, caudice vaginato 15 mm diam., vaginis 
(non flagelliferi?) spinis acicularibus armatis. Folia cirrifera, 
regulariter pinnata, parte petiolari brevi, complanata, aculeo- 
lata; segmentis numerosis, aequidistantibus concinnis, angus- 
tissime lanceolatis, majoribus 18 ad 22 cm longis, 10 ad 14 
mm latis, apice subtilissime acuminatis, unicostulatis, utrinque 
in costa media setosis, nervis lateralibus tenuibus nudis ; margin- 
ibus remotissime et appresse spinulosis vel fere laevibus. Spad- 
ices 5 et 2 similes, foliis multo breviores (±25 cm longi), 
furfure fusca adspersi, parte pedicellari propria destituti, com- 
planati, paniculati, erecto-patuli ; inflorescentiis partialibus bifar- 
ie divaricatis, disticis, simpliciter ramosis; spathis primariis 
brevibus, complanatis, anguste infundibuliformibus ; spatha bas- 
ilari subancipiti, pedicelliformi, 3 cm longa, in ore ciliata et 
exacte truncata; spathis superioribus sensim paullo minoribus, 
oblique truncatis, acutis vel acuminatis. Flores masculi curvuli, 
oblongi, obtusi, 5 mm longi, Spicae foemineae majores 4 cm 
longae, floribus disticis, utrinque 6 vel 7 ; spathellis brevibus bre- 
viter tubulosis in ore ampliatis; involucrophoris brevisime ele- 
vatis, subpedicelliformibus ; involucris orbicularibus, discoideis. 
Fructus anguste elliptici, 1 cm longi, 5 mm lati, utrinque atten- 
uati, conice rostratis; squamis per orthostichas 12 ordinatis, 
convexis leviter in medio sulcatis, stramineis, margine conspicue 
atropurpureo. 
Amboina, Mount Salahoetoe (Salahutu), Reliquiae Rohinsonianae 1612 
(c? plant), 1613 (? plant), November 27, 1913, altitude 850 meters. Native 
name rotang tuni. 
A very distinct species, referable to group XV of my monograph on 
account of its cirriferous leaves and non-flagelliferous leaf-sheaths; but in 
that group it has no affinities. It is particularly distinguishable by its 
spadices being considerably shorter than the leaves, and resembling those 
of a Daemonorops, but furnished with only short, infundibuliform, closely 
sheathing, primary spathes. 
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