Drxon: NEw MossEs FROM MALAY PENINSULA 245 
SEMATOPHYLLACEAE 
Acanthocladium polymorphum Dixon sp. nov. (PLATE 4, FIG. 3) 
A. surculari Mitt. affine, statura autem robustiore. Stirps 
habitu, ramificatione, foliorum forma et structura valde poly- 
morpha; caules 5 cm. longi vel ultra, nunc flexuosi, irregulariter 
brevissime pinnatim ramosi, nunc dense pinnati ramis strictis, 
-75-fere 1 cm. longis, obtusis vel breviter attenuatis nunquam 
flagelliformibus. Folia caulina eis A. surcularis simillima, e basi 
latissime, oblongo-ovata in pilum subaequilongum flexuosum 
integerrimum subito contracta, ecostata; areolatio perdensa, e 
cellulis angustis lineari-flexuosis laevibus, parietibus tenuibus, 
basin versus sensim paullo majoribus, latioribus instructa; 
alaribus 3-4 magnis, elongatis, vesiculosis, pulchre aurantiacis, 
supra- -alaribus nonnullis multo minoribus, hyalinis vel aurantia- 
cis. 
Folia ramea ebvinon pha nunc anguste ovato-lanceolata, 
longe tenuiter subfiliformiter acuminata, integra vel subintegra, 
nunc breviter late acuminata marginibus ad apicem reflexis, 
denticulatis, nunc late ovata, breviterf late acuminata vel tantum 
acuta, marginibus ad acumen valde recurvis, argute, fortiter 
dentatis. Areolatio diversa, foliorum angustiorum e cellulis 
elongatis, linearibus vel anguste rhomboideo-linearibus, latiorum 
e cellulis brevioribus, latioribus, ovoideo-rhomboideis, instructa; 
cellulae aut omnino laeves, aut hic illic unipapillosae, aut, 
praecipue eae foliorum latiorum, unaquaque papilla magna 
alta medio lumine praedita. 
Dioicum. Perichaetium polyphyllum, foliis erectis, sensim 
in subulam strictiusculam subintegram vel denticulatam angus- 
tatis. Seta (unica imperfecta) crassiuscula. 
HAB . W. slopes of Mt. Mooleyit, near Moulmein, Tenas- 
serim. Comm. W. R. Sherrin. 
A remarkably polymorphous plant, as described above, the 
leaves of the branches being of such diverse form and structure, 
as to make it very difficult to believe that they all belong to one 
species, the margins being plane or strongly recurved above, 
entire or strongly, coarsely toothed, the cells sometimes nar- 
rowly linear and ten or more times as long as wide, at others 
ovate-rhomboid and not more than three or four times as long 
as wide; I have seen branches with all the cells quite smooth, 
