UMIVERSITATIS LATVIENSIS - DSpace

-1—(- Peristome inserted at the mouth,
leaves contracted above the base .
B. Leaves very slightly twisted when dry.
. U.
lutea p. 5
1. Leaves lanceolate U. Dixonii p. 19
2. Leaves small, lineal-lanceolate
.... U.
viridis p. 21
Ulota lutea Mitt. in Journ. Linn. Soc. Bot. IV p. 77 (1859).
Orthotrichiim luteum Hook. Hl. in Handb. New Zeal. Fl. p. 433 (1867).
Ulota Weymouthii auctor.
Orthotrichum gracillimum R. Brown ter. in Trans. N. Z. Inst. vol. 27
p. 427 (1894).
Autoicous. Plants in yellowish tufts, brown below (rarely
dark green and blackish below). Leaves curled when dry, pa-
tent when moist, lineal-lanceolate, shortly acuminate, + suddenly
widened into an obovate or oval base and usually contracted
above it. Margins often erose and recurved above the base.
Nerve yellowish or brownish vanishing below the apex. Cells
yellow, except 4—5 rows of hyaline cells with thickened trans-
verse walls, vermicular in the middle of the base, in the upper
part rounded, papillose, 11—13 p.. Perichaetial bracts broader
and more obtuse than the leaves. Vaginula with a few stiff para-
physes; ochrea distinct. Seta yellow, 3—6 mm long. Capsule
narrowly oblong or subcylindric with a long neck, ribbed when
dry and contracted below the mouth when empty;
stomata in
the neck; lid not bordered. Calyptra densely hairy. Peristome
double; teeth 8 bigeminate, greyish, finely papillose, slightly
perforated at the apex, afterwards splitting; processes 8,
with 8
rudimentary intermediate ones, which are rarely developed, lineal-
lanceolate, hyaline, smooth, sometimes appendiculate. Spores
yellowish, papillose, 24—27 v..
Zealand.
Distribution: S. E. Australia,
Specimens examined.
Tasmania and New
Australia: Australian Alps, Mt. Müller, (Ch. French 1895) ex Herb.
Melbourne, H. Berol.
Tasmania: On trees, rivulet behind Cumming's Head, Western Moun-
tains (Archer) —
[type
specimen; Tasm. Antarct. Exp. 1839—1843 (L D.
Hooker) sub Orthotrichum crispum var.; Tasm. (Gunn) sub. Orthotr.
crispum var. —
all
three specimens in H. Berol.; Hobart, Mount
Wellington (Weymouth) various specimens: n. 1534 —
Hill), —
n. 379 17. X 88, n. 1535 10.
1. I 90 (Watchom's Hill Creek), n. 615 —
26.
X 87 (Deep Creek
VIII 89 (Bower Creek), n. 1540 -
6.
11l 91 (Falls Track), n. 1539 —
10. 11l 91 (St. Crispin's) all specimens in Herb. Broth.; Tasmania, locality and
date unrecorded
(Weymouth, n. 3019) in Herb. Dixon; Geeveston, on myrtle,
alt. 1100' 14. XI 1906 (Weymouth).
5