64 _Altred J. Ewart. 
is sterile and the phyllodes are considerably longer. It comes from 
Steetz's Herbarium, and was marked near to A. colletioides and A. stria- 
tua. — West-Australia: Cowcowing, M. Koch, no. 1013. 
Allenia!) Ewart (gen. nov. Euphorbiacearum) |. c., p. 7. — Flowers 
monoecious. Male flower — solitary, or two together in axils of leaves. 
Perianth, 4 segments in two whorls, concave, petal-like, red; outer with 
broad base and narrow tip, inner with narrower base and broader tip, 
imbricate in bud. Stamens 4, anther lobes separate and reniform in 
shape, dehiscing longitudinally by two valves. Stamens opposite segments 
of perianth, filaments apparently curved in bud, and attached to central 
disc. Disc small and quadrilateral, 4-partite. — Female flower — soli- 
tary and axillary. Perianth persistent, 4 segments in two whorls. Each 
segment with wide base and narrow, pointed tip; two outer smaller and 
somewhat reflexed. Ovary — 2 carpels and 2 tongue-like stigmas, thick, 
fleshy, diverging. — Fruit oblong, 2-celled capsule with persistent 
perianth. One seed in each cell, oblong, smooth, with caruncle. Embryo 
green, straight, linear, cotyledones slightly longer and about same width 
. as radicle. 
29. Allenia Blackiana Ewart and Rees, l. c, p. 8, pl. V, fig. 1—5. 
(Micrantheum demissum F. v. M.). — Small heath-like shrubs. Leaves on 
very short petioles, small, entire linear, coriaceous, in alternate twos or 
threes, hairy to glabrous; with prominent midrib and slightly thickened 
margin. — Stem woody, with short, stiff hairs. — The type form has 
the leaves glabrous or slightly hairy, linear, alternate, 1/, to 1/3 inch long. 
Capsule oblong, rather elongated, glabrous, — Mt. Victor, 1881, Tepper; 
St. Vincent Gult, 1882, Tepper. — Mount Compass, Kangaroo Island, 
Nov., 1908, J. M. Black. 
30. Allenia Blackiana var. microphylla Ewart and Rees, l. c., p. 8, 
pl V, fig. 6—8. — Small, rigid, much branched shrub. Leaves very 
small, Lie inch long, hairy, capsule oblong, rather shorter, and covered 
with hairs. — Specimens of the plant were forwarded by J. M. Black, 
who pointed out that if they were Mueller's Micrantheum demissum the 
numbers of parts in the flower and fruit differed from that proper to 
the genus Micrantheum. This was found to apply to all the specimens, 
and hence it became necessary to raise a new genus Alenia, distin- 
guished from Micrantheum and Pseudanthus, by the perianth four-partite 
instead of six-partite, by the four instead or 3, 6 or more stamens, and 
by the 2-celled ovary forming a 2-celled capsule with one seed in each 
cell. The leaves are like those of Micrantheum, but are in twos as well 
as in threes. In the absence of good material the general resemblance 
to M. ericoides naturally led Mueller to place it in that genus. As can 
be seen from the original description quoted beneath, Mueller's material 
was too imperfect for him to distinguish the peculiarities of the male 
and female flowers, and of the fruit. — E. H. H. Griffith, Snug Cove, 
Kangaroo Island. 
1) Apart from the different second vowels, Allania Benth. is now Aldinia 
Endl, and Allania Meissn. is now Alania Endl. 
