and very white, though not glaucous, leaves as well as in 
having more exserted flowers and in being without any 
style. In the absence of a style and in having a large 
sessile discoid stigma, M. Pearsonii differs from all other 
species known to Mr. Brown by their flowers, though it is 
not impossible that in M. testiculare, of which flowers have 
not been seen, the same arrangement may exist. The 
flowers of M. Pearsonii appear to expand at night or in the 
very early morning, becoming more or less closed during 
the day. In colour they are somewhat peculiar, two or 
three of the inner series of petals being of a dull yellow 
colour, more or less streaked with purple, the petals of the 
outermost series being entirely mauve-purple. In cultivation 
M. Pearsonii requires the conditions suited to M. Bolusit, 
M. testiculare and the other species which have very thick 
succulent leaves. ; 
Descriprion.—Herb, perennial, succulent, 14-2 in. high. 
Leaves 2, connate at the base, between ascending and 
spreading, 14-14 in. long, 12 in. wide, 1 in. thick, almost 
flat on the inner face, somewhat gibbously convex and 
slightly keeled on the outer, the margin subacute, the apex 
slightly convex, quite blunt, everywhere quite smooth, 
glabrous, whitish but not glaucous. lower solitary, 
terminal between the leaves; peduncle exserted, 1 in. long, 
stout, compressed, erect, 4-bracteate, glabrous; lower bracts 
3 in. long, } in. wide and } in. thick, somewhat sharply 
trigonous, obtuse ; the upper bracts smaller, smooth, glabrous, 
whitish. Calya } in. wide, 6-lobed, glabrous ; lobes 4—} 10. 
long, 4 in. wide, very broadly ovate, obtuse. Corolla about 
If in. across ; petals 3-4-seriate, the outer about 4 in. long, 
linear, obtuse, mauve-purple; the inner progressively 
smaller, somewhat dull yellow streaked with purple. 
Stamens very many, spreading, clustered in a ring; fila- 
ments white; anthers pale yellow. Style 0; stigma 
large, discoid, obscurely crenate, } in. across. 
Fig. 1, petals; 2 and 3, stamens; i ; a i tical section :— 
all enlarged. ? ens; 4, stigma; 5, ovary in vertical 
