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128 Alfred J. Ewart:

should be exercised to avoid creating useless synonyms by conclusions
made without such observations in the case of highly
plastic genera of this character. It is also doubtful whether
the A. Drummondii, Meisn., revived by Diels, represents more
than a variety of A. apiculata, R.Br.

AIZOON INTERMEDIUM, Diels, and AIZOON GLABRUM, n. sp.
(Aizoaceae).

The former species is distinguished by Diels from A.
zygophylloides (F. v. M.), by the shape of the leaves, longer
pedicels and narrow calyx lobes. It comes very close to some
nearly smooth stemmed specimens included by F. v. Mueller in
A. zygophylloides, and may ultimately prove to have not more
than a varietal significance. It is, however, quite distinct from
Luehmann's undescribed Aizoon glabrum. This is a rather small
plant, spreading more of less from a single root, the slender
wiry glabrous stems, 2 to 6 inches high, simple or branching
one or more times, bearing terminal flowers in loose cymes on
short pedicels, one or two pairs of linear leaves being close
under the flower, which is sometimes an inch across when fully
open, but usually less. Calyx 4 partite, usually divided nearly to
the base, enlarging during flowering to nearly 1/2 inch in length, in
large, fully-opened flowers, the lobes more or less acuminate,
usually lanceolate, but not always of equal breadth in the same
flower. Stamens numerous. Styles 4. Capsulo dehiscing into
8 valves. Seeds numerous, almost black, shaped like the head of
a mace and covered with small tuberculate spines.

Murchison, R., I. Tyson, 1898; Mt. Caroline, 1891, Miss
Sewel; Salt Lakes, Martha Heal.

AIZOON RODWAYI, n. sp.

Plant 3 to over 8 inches high, stems more or less decumbent
at base, and spreading. Leaves in opposite pairs, soft, fleshy,
with scattered warty, transparent tubercles, ovate or linear,
mostly 1/2 inch long, but beneath each flower usually a larger
pair more pointed and with broader bases. Plant glabrous
throughout, the stems more slended than A. quadrifidum, but
stouter than A. glabrum. Flowers large terminal, 1 to 1 1/2 inches