CXVII. CYCADE X. 249 
Leaves simply pinnate. Pinnæ linear, with a prominent midrib, - 
Female scales elongated, woolly, with 2 or more erect ovules on 
each side in marginal notches . . . o s e+e + + s ol Cycas, 
Leaves simply pinnate. Pinus linear, with several longitudinal 
sc : 
on each side under the thickened acuminate apex. . . . . . 2. Macrozamia. 
Leaves doubly pinnate. Pinnules obliquely ovate or broadly falcate, 
with scarcely prominent veins. Cones of Macrozamia, but the 
pex of the scales truncate . 20. 2 g s 9o ee ia 3. BOWENIA. 
1. CYCAS, Linn. 
_ Leaves simply pinnate, the pinnæ numerous, linear, with a prominent 
` midrib, circinnate in vernation.— Leaves long, simply pinnate, the pinne 
numerous, linear, with the midrib prominent underneath. 
The genus extends over the Indo-Australian region, reaching Madagascar and the 
east coast of Africa to the westward and Japan to the northward, The Australian one 
or more species are believed to be endemic, but the distinctive characters are very in- 
sufficiently known. 
l. C. media, R. Br. Prod. 348. Trunk sometimes mig, £ to 
10 ft. sometimes twice that height, rarely branched at the top. Leaves 
recurved, mostly slightly decurrent on the rhachis, glabrous or slightly 
ee when young, the longer ones varying from 3 to 8 inches, the 
into small prickles which are sometimes very few or scarcely any, 
sometimes continued almost to the base of the petiole. Cones variable 
otherwise resembles. Seeds 1 to 14 in. long, glabrous—A. DC. Proa. 
vi. ii. 527. 
N. Australia. North-west and north coasts, A. Cunningham ; Port Essington, 
Armstrong ; Escape cliffs, Hulls. : 
ueensland. Burnett and Dawson rivers, F. Mueller; Cape Upstart, Burdekin 
Expedition ; Rockingham bay and Mouut Elliott, Dallachy ; Rockhampton, T'hozet ; 
Castlereagh bay ( W. Hill ?). 
Three Australian species of Cycas have been described, the above C media, C. angu- 
. 348, A. DC. Prod. xvi. ii. 527, and C. gracilis, Miq. in Versl. K. Akad. 
Wet. Amsterdam, xv. 366, A. DC. l.c. 528; but whether these three are really distinct, 
m 
+ tet. ’ 
cir- 
nes, which 
X ith, , Roxb.) an ; 
cinnalis, Roxb.) are distinguished most readily by the scales of their male 
