126 
going farther across the bog I was surprised to find a very large 
area of this Liverwort nearly an acre in extent, growing on a con- 
siderable slope, so much so that one could slide on it. The ground at 
its edges was some feet higher, irregular, and covered with O. semt- 
dentata ; it immediately gave me the idea of a glacier, the lateral 
moraines being formed by the Olearia. 1 obtained several photo- 
graphs of this remirkable formation which [ called the “ glacial 
bog” as a distinction from the Olearia-Lepyrodia bog. The da 
was fine throughout and by far the most enjoyable one I had spent 
on the island; we returned early in order that I might pack the 
plants obtained, which included one nice plant of the white variety 
of QO. semidentata. The 14th was spent in embarking the plants 
and re-packing them into a Wardian case which I had on board, 
and we sailed in the evening about 6 p.m., reaching Lyttelton on 
17th just in time to catch the evening boat to Wellington, where 
left the plants ready to bring them to England on the 30th 
December. Thus ended a very rough but interesting trip, im 
which I was very greatly assisted by the kindriess and hospitality 
of the inhabitants of the Chatham Islands. My thanks m 
particular are due to Mr. Cox and Mr. Alec. Shand.” 
XVIII.—DIAGNOSES AFRICANAE : XXXV. 
1081. Brachylaena Hutchinsii, Hutchinson [Compositae - Inu- 
loideae] ; a B. huillensi, O. Hofttm., foliis lanceolatis vel oblanceolatis 
basi longe attenuatis, et a B. Merana, Baker, foliis petiolis et 
paniculis minoribus differt. 
Arbor, 27-30 m. alta, cortice laevi pallide cinereo fere albo 5 
ramuli floriferi late sulcati, juniores pallide tomentelli. Folia 
lanceolata vel oblanceolata, apice sensim et acute acuminata, basi 
in petiolum acute attenuata, 4°5-10 cm. longa, 1-2°5 cm, lata, 
tenuiter coriacea, supra parce lanata, demum glabra, arcte 
reticulata, subtus lanato-tomentosa, nervis lateralibus utrinque 
10-11 subtus elevatis arcuatis prope marginem divaricatis, venis 
subtus plerumque inconspicuis ; petioli usque ad 7 mm. longi, lanati.. 
Paniculae \anatae, in axillis foliorum saepius delapsorum apices 
versus ramorum dispositae ; ¢ laxae pedunculatae, Q densae, 
subsessiles ; bracteae oblongae, obtusae, 2°5 mm. longae. Capitula 
3 breviter pedicellata, circiter 12-flora. Involucri bracteae 
3-seriatae, extus parce lanatae, intus concavae, glabrae et nitidae ; 
exteriores ovato-lanceolatae, obtusae vel subacutae, 2°5 mm. longae, 
1 mm. latae, interiores oblongo-lanceolatae, subacutae, dorso leviter 
carinatae, 4 mm. longae, 1°25 mm. latae. Achaenii rudimentum 
brevissimum. Pappi setae valde inaequales, minute barbellatae, 
d 
