862 Transactions.— Botany. 
what vaulted, fixed in the centre of the segment and opening towards the 
central vein. Sporangia excessively numerous, ultimately spreading over 
the whole under-surface of the frond which when mature is a dense mass 
of rich brown-coloured sporangia entirely covering the involucres. 
Hab.—Mount Arrowsmith and Mount Torlesse—J. F. Armstrong; near 
the Waimakiriri Gorge—J. B. Armstrong. First collected in 1864. 
This is a peculiar and interesting little fern hitherto much neglected by 
fern collectors, and not at present in cultivation. It belongs to the series 
represented by 4. bulbiferum, A. colensot, A. richardi, and A. hookerianum, 
and is by far the most distinct species of the group, differing from all the 
others in the minute pubescence, the great abundance of sporangia, and 
the central sori. Any authors who are disposed to unite the previously 
described species of the group, will of course decline to admit this plant to 
specific validity; but such a course would be productive of so much confu- 
sion that it is to be hoped nothing of the kind will be attempted. In 
working up the species for my work on the native ferns, I find several new 
species in my Herbarium which shall be described in due course. 
Arr. L1.—Description of new Plants. By D. Perri, M.A. 
[Read before the Otago Institute, 21st June, 1881.] 
Cotula maniototo, n. sp. 
A minute densely-tufted moss-like species. Stems creeping, with short 
leafy branches. 
Leaves sessile, linear-oblong, pinnatifid, with few linear segments on 
each side, silky on both surfaces, 4-4 inch long, broader and more mem- 
braneous at the base. Heads small, bisexual, sessile on the tips of the 
lateral branches: involucral scales in two series, broad, entire, membrane- 
ous, outer more or less silky. Female flowers in one outer series, with 
narrow-oblong 2-lobed corolla, and 2-lobed stigma. Hermaphrodite flowers 
15-20, with corolla dilated above, and 4- or 5-lobed. Stigma flattened at 
the top ; achenes oblong, turgid, slightly winged. : 
Hab.—Maniototo Plain, Otago, in moist hollows containing water 10 
wet seasons, if 
T have never seen this plant except on the Maniototo Plain and its 
borders. It ranges from Kyeburn Crossing to the Styx, a tributary of the 
Upper Taieri. It is a very inconspicuous plant, and might readily be wield 
looked, as was long the case with Veronica canescens, Buch., which occurs 
the same locality and in similar situations. The species is an extremely 
nee 
