AMBLYSTEGIACEAE. 319 
short single nerve, ve ped Leddenty as conspicuous oe » ey 
differentia ted as in any pleurocarpous moss known! I ¢ no 
adequate ground eg eee it from the ded aa planing 
it with Lembophyllum; indeed it would appear to me quite as 
satisfactory to unite it with Calliergon in a single genus 
Key. 
Leaves — twice as long as wide, nerveless; 
ECO ste oho a aus ta ee: 2. cuspidatum 
Leaves aimoet as broad as long; nerve single, 
Vv SRGPES: BU OIGOUS ohh. oo OR, accmsteien 1. auriculatum 
1. Acrocladium auriculatum (Mont.) Mitt. op. cit., p. 5382 (1869). 
Syn. Hypnum auriculatum Mont. Voy. au Péle Sud; Cry pt., 
p. 331 (1843). Hypnum chlamydophyllum H. f. c W., 
in Lond. Journ. Bot. iii, 552 (1844); Fl. N.Z. 1, 111; 
Handb. N.Z. Fl 481. 
Hooker in the Handbook, and Mitten in the Museci Austro- 
americani recognized the identity of H. chlam ydophyllum with H. 
auriculatum, though the former author wrongly retained the later 
is quite incomprehensible why later authors (eg., 
BiCtesey. in Engler & Prantl, Musci, Ed. i & ii) have retained the 
two, distinguishing in. ceink ydophyllum as having the leaves with- 
out auricles, whereas it is described we its authors as having them 
auricled. The South American plant and the New Zealand one 
re as a matter of fact absolutely identical The s pecies is known 
at onee by the very broad (‘‘orbicular- quadrate”’ is "the deseription 
in the Ha ndbook), obtusely peuede 3 coneave leaves, with highly 
conspicuous auricles of large, thin- walled, hyaline cells, and a very 
or 
yellowish colour, glossy, with long, distinctly pinnate stems. 
A. auriculatum is a common species on moist ground. 
2. Acrocladium cuspidatum (L.) Lindb. Muse. wher, 2 39 (1879). 
Syn wheter: a. Linn. Sp. P1., 
Known at once by the — otek a ints ” the stem 
and branches, he its co ordiate: ovate, obtuse, nerveless leaves, with 
large, distinctly marked auricles isis rom the previous species by 
the taller habit, more rigid sti and much more elongate leaves. 
ts position as a New Zealand moss rests on a specimen “‘ Pelichet 
Bay, Otago, May 1888, in herb. Bell,’’ det. Brotherus. See Trans. 
N.Z. Inst., xxix, 445. 
ee (Sull.) Bryhn Explor. p. 61 (1893). (Hypnum Suwub- 
us Campylium Sull.) 
A sete ill defined genus of moisture-loving species, but gener- 
ally characterized by longly pointed, ee! ‘spreading or squar- 
rose leaves, with very narrow areolatio 
