219 ANNALS OF THE ROYAL BOTANIC GARDEN, . CALCUTTA. [C. concinnus 
HanrraT.—First discovered by Sir R. Schomburgh in Siam. (¢ Specimen in 
flower in Herb. Kew), and found there .again in fruit by Dr. Wawra at Bangkok 
during ‘the voyage of the Austrian man-of-war . * Donau" in 1868—71. (Fruit 
» specimen No. 347 in the Herb. Vindob.) | ` 
 OssERvaTIONs.—. siamensis appears closely related to C. fasciculatus, from which 
it differs in the equidistant leaflets and the geminate female flowers at each 
spathel—a very rare occurrence in the genus, Other species have spikelets with 
4-seriate flowers, but 2 of the series are of 9 and two of 3. flowers. In C. 
siamensis, the 4 series are all of ¢ flowers besides the two series of sterile ones, 
PrarE 59.—OCalamos siamensis Becc, A portion of the type-specimen preserved 
at Kew with the lower portion of a. leaf and of a young fruit spadix and the 
base of another spadix in flower; a detached entire partial inflorescence. 
46. Catamus CONCINNUS Mart. Hist. Nat. Palm. iii, 208 (ist edit.) and 332, pl. 
116 fig. X; Kunth. Enum. Plant. iiij 207; Walp. Ann. iü, 483 
and v, 829; Griff. in Macl. Cale. Journ. v, 49 and Palms Brit. India, 
59; Kurz in Journ. Asiat. Soc. Ben. xliii, lI (1874) 214, pl xxC; 
Hook. f. Fl. Brit. Ind. vi, 441; Bece. in Rec. Bot. Surv. Ind. ii, 
. 204. | 
Description.—Scandent, of moderate size,  Leaf-sheaths . . . . . Leaves 
large, not cirriferous (not seen entire); petiole . . . . .; rachis (of the upper 
part of the leaf) sprinkled with small brown scales, acutely bifaced above, flattish 
below, where armed along the middle (up to the apex) with straight rather long 
(2-8 em.) deflexed spines and. marked with the deep impressions left by. them in 
the prefoliation; leaflets numerous, grouped in fascicles of many (at least in the 
lower and middle portions of the leaf) green even when dry and quite of the 
same colour on both surfaces, shining, with the  mid-costa stout and acute above, 
also strong, but more obtuse, beneath, sprinkled mainly from the middle upwards 
with very small inconspicuous spinules ou both surfaces; secondary nerves 3-4 on 
each side of the mid-costa, all equally weak, but one or two of them on each 
side of the mid-costa sometimes indistinctly tuberculate-spinulous on both surfaces 
or upon one only; transverse veinlets crowded, sharp, very distinct, interrupted ;. 
margins finely and very appressedly spinulous; the largest leaflets 50-60 em. lsh 
and 3-3°5 cm. broad, ensiform or elongate-oblanceolate, slightly narrowed at the 
base where suddenly plicate, rather suddenly acuminate at the apex; the uppermost 
much shorter and more attenuate at the base; the two of the terminal pair entirely 
free at the base. Male spadix (not seen entire) very large, ultrasupra-decom- 
pound, furfuraceous; primary spathe elongate-tubular, unarmed (in. the small portion: 
seen); partial inflorescences forming a panicle 22-25 cm, long with various (about 
12) branchlets (primary spikes) of which the lowermost, the largest, are branched 
again with 7-8 spikelets on each side; secondary spathes unarmed, membranous, 
dry, subscarious,  infundibuliform, rather enlarged and loosely sheathing slow 
obliquely truncate at the mouth and prolonged at one side into a tria 
acuminate point; tertiary spathes of the branchlets narrowly tubular 
New 
at the 
