26 Descriptive Notes on Papuan Plants. 
Timonius rigidus (Polyphragmon rigidum, Miq. Annal. Mus. Bot. 
Lugd. iv. 243). 
Timonius pseudo-capitatus (Polyphragmon pseudo-capitatum^ Scheff. 
I. c. p. 2D). 
Plectronia Moluccana, J. Hook, in Benth. and Hook. Gen. ii. 110, 
(Canthium Moluccanum, Boxh. FI. Ind. ed. Wall. ii. 172). 
Pavetta Doreensis, Scheff. 1. c. 31. 
Hydnophytum lanceolatum, Miq. Annal. Mus. Bot. Lugd. iv. 257. 
Hydnophytum montanum, Bl. Bijdr. 956, 
Hedyotis carnosa. 
Korthals in Ncderl. Kruidk. Archief. ii. 161. 
On the Baxter-Rivei *3 Rev. S. Macfarlane. 
Our plant seems quite identical with the Sumatra plant, of which I 
possess specimens distributed by Dr. Korthals. The cilia on the calyx 
lobes are however not developed. The corolla is only 1^2'" long and 
imbearded; the seeds are angular and black. II. prostrata (Koitli. 1. c. 
160) seems conspecific. Khasyan specimens of II. cephalaphora, dis- 
tributed in Kfiw from Dr. Hooker’s collection, have the leaves stronger 
ribbed and calyx-lobes as well as the corolla considerably longer. 
Bentham (Flor. Hongkong, 149), in uniting H. cephalophora with 
H. uncinetla (Hook, et Arn. Bot. Beech. 192) and with H. borreroides 
(Champ, in Kew Miscell. iv. 171) describes the corolla only two lines 
long; this discrepancy may perhaps be explainable by dimorphism. The 
numerous allied species need all careful and extensive study yet on 
places of their natural growth, before tlie diagnosis of any can be safely 
defined. H. Laperousii (Cand. Prodr. iv. 420), from near the ominous 
death-place of the unfortunate Admiral Count Laperouse and his 
poor companions, according to the illustration in the Atlas of the 
Voyage de I’Astrolabe, PI. 23., differs mainly in longer fiowers and 
more strongly nerved leaves from our plant. H. membranacea (Thwait. 
Enum. Plant. Ceylon. 143), H. macrophylla (Wall, in Wight et Arn. 
Prodr. Flor. Pmnins. Ind. 408), H. inamoena (Thw'ait. 1. c, 143), H. 
nodulosa (Arnott. Pugill. 22), H. hispida (Retz. Observ. iv. 23), H. 
jodoneura (Miq. Flor. Ind. Batav. ii. 181) and other allied species I 
have compared on this occasion, all appearing clearly distinct from H. 
carnosa. 
