98 Descriptive Characters of 
shorter than the petioles; leaves pinnatisected, glabrous or 
together with the upper part of the petioles scantily downy ; 
segments few, linear, undivided or bi-trisected, terminated by 
a gland; sepals appressed, glabrous, nearly ovate, with 
membranous margin; petals five-ten, white, obovate or 
oblong-cuneate, almost twice as long as the calyx; nectar-pit 
distant from the base, margined, covered by a hardy percepti- 
ble scale; carpels few, glabrous, broad-ovate, compressed, 
margined, smooth, with a hooked style. 
In gravelly places on most of the summits of the Australian 
Alps, irrigated by the melting snow. 
I should have referred this neat little plant to the Tasma- 
nian R. nanus, were the discrepancy in the colour of the 
petals, a character of such validity in this genus, not too 
manifest ; for whilst to that species bright yellow petals are 
attributed, I found them always white in this, and assuming 
only a slight yellow tinge when drying. 
In selecting the specific name, I desired to pay a slight 
scientific tribute to the merits of A. M‘Millan, Esq., who 
not only forced, with skill and enterprise his way first into 
Gipps’ Land, opening one of the finest districts of whole 
Australia to civilisation, but who also named and first ascended 
Mount Wellington, where I became originally acquainted 
with this plant. 
3. Caltha introloba. 
(Sect. Psychrophita.) 
Dwarf, leaves on long petioles, hastate-ovate, notched at 
the summit, perfectly entire, enlarged at the base by two 
long lobes; these bend inward, oblong-linear, below dilated ; 
scape with one flower, very short; sepals white, five-eight, 
deciduous, lanceolate-linear, acuminate; carpels five-nine, 
with three seeds, and a long straight style, reflexed at the 
top. 
‘On gravelly places in the Australian Alps, irrigated during 
the summer months by the melting snow. Mount Hotham, 
Mount Latrobe, and Munyang Mountains. 
To be distinguished from C. Novae Zeelandie principally 
by its white flowers, and longer leaf-lobes. It is the only 
species known from New Holland. 
