304 mosses (Gepp). [Isopterygiwn 
very short or obsolete ; cells elongate, very narrow, with firm 
liavid walls, basilar cells lax, alar two upon two subquadrate, 
lax ; perichsetial bracts erect, lanceolate, longly acuminate, 
serrulate; seta 15 mm. high; theca subhorizontal, ovoid, with a 
short rugulose neck ; endostome processes subperforate, cilia one 
or two interspersed ; operculum obliquely conic, shortly rostrate. 
HuiLLA. — Terrestrial or on the base of old trunks in the forests of 
Legumhiu.sce, called " Matas de Panda " i.e. Brachystegia and Berlinia, 
between Lopollo and Lake Ivantala, collected during the flight : with 
fr. end of Feb. 1860. No. 45. 
This species resembles /. Antumesis Broth, in Engl. Bot. Jahrl». 
XXIV. ii. p. 204 (1897), gathered in Huilla, in the imbricated arrange- 
ment of its leaves, but is a smaller and much more slender plant with 
a short-necked theca. 
2. I. Dubyi Gepp, sp. n. 
Antoicous. Plant rather robust, widely and laxly csespitose, 
flavescent-green, depressed. Stem 5 to 6 cm. long, creeping, laxly 
pinnately branched, with homomallous leaves ; branches 7 to 
13 mm. long, usually simple, very compressed, with rather dense 
foliage, diameter with the leaves 2 '5 mm., obtuse. Rameal leaves 
very complanate, widely divergent, rather hollow, obliquely ovato- 
lanceolate, shortly acuminate, with margins a little recurved, 
quite entire or at the apex very minutely serrulate or denticu- 
late ; nerves two very slender, J the length of the leaf ; cells 
elongate (10 by 0-75 /a.), basilar lax ; perichsetial bracts erect, 
lanceolate, longly acuminate, minutely serrulate above, lower 
cells lax, basal cells brown; seta 14 to 15 mm. high, yellowish- 
red ; theca horizontal, oval, subincurved, with mouth oblique, 
neck short rugulose ; processes of endostome subperforate, cilia 
solitary ; operculum convex, shortly rostrate. 
PUNGO ANDONGO. — A very pretty and not uncommon moss, yellow- 
green, or bright-gold in drier situations, widely casspitose on stones and 
moist earth by rivulets and springs in the woody parts of Barrancos 
de Mata de Pungo : with fr. beginning of May 1857. Xo. 97- 
This species bears some resemblance to Hypnwm leucophanes Hampe 
(Plagiotheciiait, C. Muell. ; Isopterygium Jaeg. et Sauerb.) in its foliage 
but has wider leaf-cells. 
Allied to the preceding species are the following numbers : — 
Pungo Andonc;o. — In company with Campylopus Jiorridm (Welw. 
No. 76), Barranco de Pedra Songue ; with fr. April 1857. No. 77- 
Within the presidium on shady ground near Caghuy, with unripe fr. ; 
and ou moist ground in rocky places near Caghuy, not far from 
the presidium, sterile ; March 1857. No. 110. A yellow-green moss 
with bright-purple fruit-stalks, common, but seldom fertile, on the 
most deeply shaded ground in the primitive woods of the island 
"Calemba" in the river Cuanza not far from Quisonde ; with fr. 
March 1857. No. 111. A widely csespitose, humble, creeping moss, 
on the ground in marshy woody places near Luxillo ; sterile, Feb. 1857. 
No 120 ; also No. 205, in part. 
BUMBO. — Mixed with Hepatics, attached to rocks in primitive 
forests near Chao da Xella on the ascent of Serra da Xella : without 
fr. June i860. No. 43. 
