HYPNACEAE. 331 
the plants probably belong to a single species Sage through the 
greater part of the extra- tropical southern hemisphe 
TAXITHELIUM (Spruce in sched.) Mitt. Muse. Austr.-Amer., in Journ. 
Linn. Soc., Bot. xii, 21 (1869). 
A genus which is fairly distinct in most of its forms, from 
Pligiothastun: etc., in the papillose cells, from Trichosteleum in the 
shortly beaked lid’ and absence of inflated alar cells ; — at times 
failing, in one species or another, in all these characters. The dis- 
tribution is mostly tropical, and the New Zealand eptiaiet is one of 
the extreme outliers in the southern hemisphere. 
oe A cp aeotines (Mitt.) Jaeg. Adumbr. ii, 489. [Plate X, 
12. ] 
ais Hugin polystictum Mitt. in Hook. f., Handb. N.Z. 
Fl., p. 482 (1867). 
I have given some notes on this plant, supplementary to the 
jens pa i in the Handbook, in Bull. Torr. Bot. Club, 42: 107 
(19 ei 
t appears to be a very rare plant; and has only cher gathered 
in small quantity in each of.the three stations in which it has been 
found. It does not exist outside New Zealand. The stems while 
slender are very rigid, stiffly and at times divaricately branched, a 
very unusual feature in this genus, and more or less complanate; the 
e by no means complanate; altogether it resembles somewhat a 
alncinely slender form of Acanthocladium extenuatu 
e leaves vary greatly in outline; they are all very concave, 
the stem-leaves widely ovate, almost poet ea abruptly narrowed 
to a rather long, flexuose su ubula, which may be either loriform or 
finely subulate; the branch leaves vary greatly in the degree of 
acumination, and may be almost obtuse; they may be quite entire 
or slightly toothed at apex. 
eroscope the plant is at once recognized by the 
seriately apatite cells; each linear- oe : cell bearing on its 
surface a single row of rather coarse, stro but not very high 
papillae, about 3-5 on each eell. The alar waits are very marked, 
three or four at each angle being vesicular and hyaline 
The inflorescence is probably autoicous; the bericbidéiel leaves 
are erect and sharply toothed; seta about 1: 5 em., capsule oblique, 
curved, as in Plagiothecium 
Its only known stations are that of the Handbook (Northern L., 
unlocalized, coll. Knight); Mt. Egmont, coll. W. Gray, 1912, No. 
118a; and Wa sie: Hawkes Bay, ar S. Chadwick, herb. o 
Webster, No. 995. Both these last are in my herbarium. 
PLaGIOoTHECIUM Bry. eur., vol. v, Fase. 48 (1851). 
A fairly well defined genus, with complanate leaves, usuall 
tant, asymmetrical, generally rather large and wide, not finely 
acuminate, with nerve 0 or bifid, and cells rather wide, linear- 
