1869.] On Pandanophyllum and allied genera. 75 



liae, var. /?. trinervis, simillima ; achenia niticla, ovata, atrofusca, 

 acuminata, in sicco bisulcata. 



Hab. — Borneo, Labuan : Barter, No. 193. 



This species, in general appearance, resembles IP. latifolium y. 

 minor, but may be readily distinguished by the nervature and the 

 bisulcate achens. 



(3.) H. Longirostre, Thw. FJnum. PI. Zeyl. 346. 



Hab. — Ceylon : Thwaites, No. 3468. 



Species dubia. 



Hypolytrum compactum, N. E., in Linn. IX. 280 ; Kth. Enum. II- 

 272 ; Steud. Gyp. 32 ; Miq., Fl. Ind. Bat. III. 333. 



A Luzon species which by Steudel, and subsequent authors, is 

 compared with Pandanophyllum humile, Hassk, 

 II. Thoracostachyum. 



Kurz in Tydsch. Nat. Vereen. Ned. Ind., deel. XXVII. (nomen 

 nudum). 



Spicae corymbosae, teretes. Squamae undique imbricatae, dein 

 deciduae, inferiorum nonnullae vacuae, reliquae spiculam 6 — 7 

 floram androgynam foventes. Flosculi 3 exteriores masculi, sequente.s 

 ad squamulas reducti ; flosculus summus femineus, uni-sqamulatus. 

 Squamulae squama communi breviores et oppositae, carinato-com- 

 pressae. Ovarium compresso-oblongum, utrinque attenuatum ; stylus 

 trifidus. Achenium osseum, lenticulari-compressum, utrinque attenu- 

 atum, rostratum. — Herbae liabitu et vegetatione omnino Hypolytri, 

 seel spieis multo majoribus rigide squamatis insignes. 



1. Th. Sumatranum, Kurz. Folia linearia, plicato-3-nervia, 

 spinuloso-serrulata ; culmi foliis longiores, trigoni, oligophylli ; corym- 

 bus polystachyus, involucratus, divaricato-squarrosus ; spicae obov- 

 oideo-ellipticae, parvulae, in sicco stramineae ; achenia lenticulari- 

 compressa, utrinque attenuata, rostrata, laevia. — Lepironia Sumatrana, 

 Miq., Suppl. Fl. Sumatra, 604. 



Hhizoma abbreviatum, verticale, radices crassas demittens. Folia 

 firma, densa, trifarie equitantia, linearia, acuminata, plicato-trinervia, 

 margine costaque subtus a medio spinuloso-serrulata, 2— 2 J ped. 

 longa, ^ poll. lata. Culmi folia longitudine superantes, 3 — 3£ ped, 

 longi, trigoni, striati, glabri, basi paucifoliati. Corymbus polysta- 

 chyus, divaricato-squarrosus, ramis brevibus triquetris ; rami inferi- 



