432 
IV. MUSCI. 
[ Orthotriclium . 
17. M. retusum } Hook. f. and Wils. FI. N. Z. ii.‘ 79. t. 85. /. 6. 
Stems tufted, creeping ; branches \ in. long. Leaves pale vellow-green, 
crowded, erecto- patent and recurved when moist, crisped when dry, ligulate- 
oblong, retuse and 2-fid at the apex, scarcely keeled ; nerve pale ; cells very 
minute, opaque. Fruit unknown. 
Northern Island : habitat unknown, Colenso. Kiapara ?, Ker in Herb. Mitten. 
18. M. aristatunij Mitten, mss. Small ; branches short. Leaves 
greenish-brown, spreading, contracted when dry, broadly lanceolate, obtuse, 
with a subpiliferous apex, keeled ; nerve vanishing below the apex ; basal 
cells shortly oblong ; upper scarcely papillose.— Mitten. 
Northern Island: Auckland, Kniglit; specimen very small, and without fruit. 
M. piliferum, Schwsegr., a Sandwich Island plant, occurs in Mr. Menzies’ collection, but 
has been found by no one else, and as the habitats of several of that eminent collector’s plants 
were confounded, it is most probable that this is one such ; it may be known by its 
spreading lanceolate-subulate leaves, with long hair-points. 
M. Tongense , Sullivant, Mosses of the U. S. Expl. Exped. 7- 1. 5 ( M . abbreviation, Mitten, 
mss.), is unknown to me. 
29. ORTHOTRICHUM, Hedwig. 
Densely tufted, bright or dark green, short-stemmed mosses, often forming 
small cushions on trees and rocks, rarely on earth, sometimes creeping. 
Fruitstalk terminal. Capsule erect, pyriform ; neck more or less elongate, 
striate, ribbed when dry ; annulus 0 ; peristome 0, single or double ; outer 
16 teeth mostly united in pairs and inserted below the mouth; inner 8-16 
cilia. Operculum with a conical beak. Calyptra large, inflated, campanu- 
late, plicate, often pilose ; base crenate or lacerate. 
A large European and north temperate genus, rare in the tropics. 
Peristome double. 
Leaves spreading, subacute. Capsule immersed 1.0. calvum. 
Leaves spreading, subacute. Capsule exserted 2. 0. pumilum. 
Leaves spreading, erose. Capsule exserted 3. O. luteum. 
Peristome single (Brachystf.i.eum). 
Leaves erecto-patent, oblong below, narrow above, obtuse .... 4. 0. crassifolium. 
Leaves suberect, subulate, acuminate 5.0. angustifolium. 
1. O. calvum, Ilook.f. and Wils.; — Ft. N. Z. ii. 8. t. 85./. 7. Stems 
tufted, short, slender. Leaves dull green, spreading and rather recurved when 
moist, suberect when dry, oblong-lanceolate or ovate-oblong below, and more 
linear above, subacute; nerve solid; cells opaque. Fruitstalk - 1 2 ,- in. long. 
Capsule about as long as the fruitstalk, minute, elliptic-oblong or clavate, 
striate ; inner peristome of 8 cilia ; operculum not seen. Calyptra yellow- 
brown, glabrous. 
Northern Island : Mauawata, on branches, Colenso. 
2. O. pumilum, Dickson ; — FI. N. Z. ii. 80. Stems short, tufted, ^ in. 
high. Leaves spreading when moist, appressed when dry, lanceolate, sub- 
acute, concave ; margin revolute ; nerve vanishing below the apex. Fruit- 
stalk very short. Capsule sunk amongst the leaves, ovoid, with a short neck, 
broadly striate; operculum conical, short. Calyptra naked. — Wils. Bryol. 
Brit. 178. t. 45 ; Schwmgr. Suppl. t. 50. 
