AND D^MONOROPS, WITH DIAGNOSES OF THE NEW ONES. 201 
mouth of their respective spathe. Fruiting perianth explanate. 
Spathellule of the $ flower never pedicelliform. Albumen 
equable. Embryo basilar. 
23 Calamus pachystemonus Thw. . . . Ceylon. 
24. Calamus digitatus Bqcc.^^C. pachystemonus (partly) Thw. 
— Ceylon, 
25. Calamus .radiatus Thw. .... Ceylon. 
Group V. — Leaves not produced into a cirrus. LeaFsheaths 
flagelliferous. Primary and secondary spathes very elongate- 
tubular, strictly sheathing and entire at the mouth. Spikelets in- 
serted at the mouth of their respective spathe. Seed not ruminate, 
dorsally alveolate. Embryo basilar. 
,A. — Leaves with few leaflets usually broad flanceolate or elliptiCy 
more rarely elongate-lanceolate^ the two terminals confluent or 
connate in the lower portion. Secondary spathes, spathels and 
spathellules not or scarcely scabrous, 
© Spathellule of the ? flower not pedicelliform. Fruiting 
perianth hardly callous at the base, not or slightly pedicelliform. 
26. Calamus javensis BI. (type) . . Java ; Sumatra. 
C. javensis V, peninsularis Becc. . , Malayan Peninsula. 
Subvar. PURPURASCENS Becc. . . Penang. 
Subvar. PINANGIANUS Becc. . . . Penang. 
C. JAVENSIS POLYPHYLLUS Becc. . Malayan Peninsula. 
C. JAVENSIS V, INTERMEDIUS Becc. . Malayan Peninsula. 
C. JAVENSIS V, TENUISSIMUS Becc. . Malayan Peninsula. 
C. JAVENSIS V, tetrastichus B 1 .— C. tetrasikhus Bl. — 
C,borneensis Miq. — C, amplectens^X, • . Borneo. 
27. Calamus filiformis Becc. . . . Borneo. 
28. Calamus corrugatus Becc. sp. n. — Gracilis, caudice valde 
elongate tenuissimo; frondes breves, 30-35 cent, longae, vagina 
inermis sed transverse crebreque costulis prominulis notata, petiolo 
brevi, segmentis paucis remote oppositis lanceolato-ellipticis costulis 
3 utrinque nudis percursis, majoribus 12-13 cent, longis, 2’5 cent, 
latis, apicalibus usque ad medium javensi proximus. 
Borneo ; Sarawak (Beccari P. B. No. 1910). 
29. Calamus schistoacanthus Bl. . , Sumatra. 
30. Calamus dioicus Lour. (Pierre No. 4834). Cochinchina. 
31. Calamus PAPUANOs Becc. . . . New Guinea. 
32. Calamus flabellatus Becc. . . Borneo. 
