110 BRYOLOGY OF NEW ZEALAND. 
POTTIEAE. 
os ped ee: ae & ae ie Acaulon. 
B. on 
Gavcen campanulate Sen ene at least), enclosing the vin ; 
plants small nnediella. 
b. Gal tise mitriform, covering upper part of capsule only robust artieny 
lea dered . Ca alyptopogon. 
ic ictal cucullate 
. Upper art of ventral surface of nerve covered with long fila- 
mentous lamellae : .. Crossidiwm. 
B. Nerve normal. 
Capsule short, oval or elliptic, peristome failing or teeth short, 
often rudimentary ; plants small Pottia, 
Capsule cylindric or oblong-c aromas peristome-t teeth long, 
spirally twisted ; plants often robust Tortula. 
I. TRICHOSTOMEAE. 
Astomum Hampe (Phascum Hedw. ex p.; Systegium Schimp.). 
Astomum austro-crispum (C. M. & Beck.) Broth. in Engler and Prantl, 
Pflanzenfam., Musci, i, 384 (1901). 
Syn. scum austro-crispum C. M. & Beck. in Trans. N.Z. Inst., 
vol. 26, p. 274, tab. 25 (1894). Phascum lanceolatum R. Br. ter 
in Trans. N.Z. Inst., vol. 26, p. 302.  Pleuridium lanceolatum 
972. 
A widely distributed species, I should judge. Readily known among 
the Phascoid mosses by the Weisioid leaves, much curled when dry, longly 
linear with mucronate or cuspidate points, minute isodiametric upper cells, 
and upper margins usually strongly incurved. 
Var. nov. longifolium (R. Br. Hel Dixon. 
Syn. Phascum longifolium R. Br. ter. in Trans. N.Z. Inst., vol. 26, 
p. 303 (1894). Pleuridiuin longifolium Par., Ind., p. 972 (1897). 
Robustius ; foliis superioribus praelongis (4-5 mm.) ; theca et operculo 
longioribus. 
Hab—On wet clay, Lyttelton Hills ; coll. type in Brown’s 
herb. I do not know of any other locality for ae eit-wticind ety. 
Hymenostomum R. Brown. 
Hymenostomum patulum (Knight) Dixon aaghs 
Syn. Gymnostomum patulum Knight 5 ae se Z. Inst., vol. 7, 
p. 354. vee 28 vf ea (nec G. anda Wils., MS. ined., in Handb. 
Gym. tortile Hook. f ; ee as OS; 
ASD ; 
Handb. Ni x TL , p. 40. 403 (nec Schwaegr.). Hymenostomum neglec- 
tum Hampe, MS. in herb. Gym. longirostrum R. ia ter. in 
94). 
carpum 
K, ih ter. op. et loc. cit. % Gym. Wrightii R. he eee ter., op. et 
loc. ec, 
A cng vane plant in the leaf characters, which has given rise 
to much confusion, and has, I think, without doubt led to the Leben, 
