1869.] On Pandanophyllum and allied genera. 75 



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

 acuminata, in sicco bisulcata. 



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



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

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

 bisulcate achens. 



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



Hab.— Ceylon : Thwaites, No. 3468. 



Species dubia. 



Hypolytrum compactum, N. F., in Linn. IX. 280 ; Kth. Enum. II • 

 272 ; Steud. Cyp. 32 ; Mig;., 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, reKquae spiculam 6 — 7 

 floram androgynam foventes. Flosculi 3 exteriores masculi, sequentes 

 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 habitu et vegetatione omnino Hypolylri, 

 sed spicis multo majoribus rigide sauamatis insignes. 



1. Th. SumatrailUm, 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, 

 Mia., Suppl. Fl. Sumatra, 604. 



Khizoma abbreviatum, verticale, radices crassas demittens. Folia 

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

 margine costaque subtus a medio spinuloso-serrulata, 2 — 2£ 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- 



