358 ANNALS OF THE ROYAL BOTANIC. GARDEN, CALCUTTA. [C. equestris» 
Hasirat.—The Moluccas, at Buru and Amboina. In Buru it receives the name 
of ‘‘Codat,” in Amboina that of “Ua Cawa,” at Bonoa and Loha that of “ Rotang 
Cawa.” Very much employed for ligature and reduced into strips for baskets and’ 
other wicker-work. 
OxseRVATIONS.—Though generally considered a very doubtful species, it seems to 
me more certain than C. eguestris, beirg represented in a fruiting condition in 
plate LVII fig. I (vol v) of Rumphius. That this plate really belongs to 
€. Cawa I have little or no doubt from what is said in the explanation of the 
above-mentioned plate at p. 114 and on account of the exactness with which that 
plate agrees with the description. 
C, Cawa is very closely allied to C. equestris from which it differs in the more 
slender rooting stem, in the leaf-sheaths densely spinose, in the slender spadices and: 
chiefly in the not grouped leaflets. In this respect, as in most characters, C. Cawa 
is extremely akin to C. minahasse. 
126, Canamus EQuESTRIS Willd. Sp. Pl. ii, 204; Lam. Encycl, vi, 306; Rees, 
Cyclop. n. 11; Roem. et Schult. Syst. vii, 1300 ( partly—see Mart. 
Hist. Nat. Palm. iii, 340, No. 532 note); Kunth, Enum. Plant. ii, 
204 (partiy ); Blume, Rumphia, iii, 61; Martius Hist. Nat. Palm. iii, 
340 (not 203, Ist edit. and 207, 2nd edit. and excl t. 113—128). 
Walp. Ann. iiij 490 and v, 832; Miq. Fl. Ind. Bat. iii, 183 and De, 
Palmis 28; H. Wendl. in Kerch. Palm., 236; Hassk. in Tijdschr., 
Nat. Geshied. ix, 172 (according to Miq. Fl. Ind. Bat. l c.) and 
Neuer Schlüssel zu Rumph's Herb. Amb. 101 ( excl. many syn.). 
C. Roiang e Linn. Sp. Plant. 403. 
Palmijuncus equestris Rumph. Herb. Amb. 110, 56 (sterilis! ), 
DrscRiPTIoN.— Seandent, rather slender, not rooting at the lowest nodes.  Leaf- 
sheaths not flagelliferous, rugose, not densely spinulous. Leaves about 1 m. long in 
the pinniferous portion, and terminating in an equally long clawed cirrus; leaflets 
elliptic-lanceolate, acute, few, inequidistant, resembling those of C. javensis, subaggreg— 
ate, 18-25 cm. long, 3:5-45 cm. broad, furnished with many (5?) spinulous- 
setose nerves; rachis prickly beneath,  Spadiz ( 9 ?) about 1 m. long; lowest primary 
spathe flattened and acutely two-edged, the edges prickly, upper primary spathes 
cylindraceous, densely prickly; partial inflorescences few ( 4-5 ), about 20 cm. apart 
each bearing 12-15 arched deflexed spikelets. - Fruit globose, small, pisiform, shortly 
beaked, scales straw-coloured, 
HaBrrar.—The Moluccas, where according to Rumphius it grows on the mountains 
of Hitu and Hulamul in. Amboina, also in the Island of Buru. Native name ‘ Rotang 
Tsjavoni" or simply **Tsjavonij and more specially “Utta laun cana.” : 
OssERvATIONS.— Blume and Martius have established that the name of C, lon a 
must be applied to that species which Rumphius has described at Chap. lviii and 
figured in’ Plate lvi of vol. v. The other species of Calamus that Rumphius describes 
in pen same Chapter lviii, 112, and which is more specially called R. r is the 
