132 QUEENSLAND AGRICULTURAL JOURNAL, [1 Fes., 1898. 
respects the last-mentioned, but I am not aware of its having been suspected 
of injuring stock; probably the species is rare or local. The species most 
frequently met with about Brisbane is a form of JZ. spiralis, and is easily 
distinguished from others by the absence of pinne on the lower half of leaf, 
and its almost cylindrical petioles (leafstalks). 2. Douglasii is, so far as at 
present known, peculiar to Traser’s Island, and is evidently a close ally of 
M. Miquelii. The curiously twisted leaved species, M. Paulo-Gulielmi, makes 
but few leaves, and these have very narrow pinnw; as a rule, also, this species 
forms a more decided aboveground stem than any of those before mentioned ; 
plants of it are to be met with at Maryborough and Stanthorpe. AZ. Mooret 
is the large, spiny, tall-stemmed species, met with near Springsure; the harsh 
nature of the leaves alone should prevent this species being browsed upon by 
stock. I. Denisonii, of Tambourine and other mountains of Southern Queens- 
land, and I. Hopei, found about the Daintree, Johnstone, and other localities 
of the tropical parts, are tall-growing species, with very broad pinne and 
-cones often exceeding 3 ft. in length. The foliage of these two species one 
would imagine to offer a more tempting bite than any of the kinds before 
mentioned, but that we never hear of any harm occurring to cattle browsing 
upon them may probably be attributed to the usual abundance of superior 
food in the localities where they grow. It must be borne in mind by all 
stockowners, however, that the fruit of all these plants is as pernicious as the 
foliage, and probably more dangerous; therefore care should be taken to have 
the fruit of all carefully destroyed before they come to maturity. This would 
remove a present danger, as well as check the spreading of the plants. 
Most Prominent Characters of the Genus Macrozamia.—Stems cylindrical, 
sometimes forked, seldom tall, most frequently not formed above the ground. 
Leaves simply. pinnate. Pinne linear, with several longitudinal, scarcely 
prominent, nerves contracted and often callous at the base; when young - 
trequently hairy. Male cones always much narrower than the female ones, 
often more or less curled after maturity, cylindrical, the scales above the 
middle of the cone with a central erect point. Female cones oblong or 
irregularly-globose, from a few inches to over 3 feet long. Scales with one 
pendulous fruit (seed) on each side; the apex with an erect or recurved, long, 
or short spine. Fruit longer than broad, somewhat angular, covered by a 
more or less fleshy integument. 
The genus Bowenta, so far as at present known, is limited to a single 
species, of which there is a well-marked variety. B. spectabilis was first met 
with by A. Cunningham at the Endeavour River, since which it has been found 
in many other parts of tropical Queensland. ‘he variety differs from the 
normal only in that its pinnules (secondary leaflets) are serrated. It was first 
found by M. A. Thozet near Rockhampton. 
This genus differs from Macrozamia only in having bipinnate leaves, and 
in the absence of a point to the cone-scales. The stems are not formed above 
‘the ground. The rhizome is eaten by the aborigines like the yam. So far 
there is no account of this plant having been suspected of poisoning stock, but 
it is not met with upon grazing country. 
EXPLANaTIoN oF FiauREs. 
, (See Plate.) 
Vig. 1. Cycas. Pinne attached to leaf-rhachis. 
Fig. 2. Male cone. 
Fig. 3. Scale of female cone with fruit attached. 
Fig. 4. Macrozamia. Pinne attached to leaf-rhachis. 
Fig. 5. Male cone. 
Fig. 6. Female cone. 
Hig. 7. Bowenia. Upper portion of pinne with pinnules. 
(All more or less reduced.) 
