77 
Genus — EQU ISETUM, Linnaeus. 
Gen. Char . — “ Eructu spicieformi, cylindraceo, oblongo, sou ovato 
sporangiorum receptaculis peltoiclcis. Eoliis in vaginam connatis.” 
Ohs . — There are about twenty-live species amongst the present flora. 
In geological times they begin undoubtedly in Triassic rocks, and occur 
again in Jurassic and Cretaceous beds. 
Eqtjisetum rotieehum, Ten. Woods. 
E. rotifer um , Tenison Woods. On the Fossil Flora of the Coal Deposits of Australia. (Proc. 
Linn. Soc. N.S. Wales, 18S3, Vol. VIII, pt. 1, p. G6, PI. VI, f. 5, G.) 
Sp. Char. — “ Stem cylindrical, closely and faintly grooved, joints 
approximate below, distant above. Leaves carinate, connate into a sheath, 
the teeth of which arc short, Hat, rounded, of equal width throughout, 
adpressed to the stem. The diaphragmata of the joints and leaf scars of the 
branches are very distinct, round, with radiate lacunae, varying from IS to 30, 
and a central orifice. Eructification unknown.” — ( Ten . Woods.) 
Locality and Horizon . — In higher Mesozoic beds at the Walloon 
Mine, near Ipswich, Queensland. 
2. — S CHIZ ONJETJBEJE. 
Ohs. — This order includes especially two genera, Schizoneura and 
Vhyllotheca. 
Schizoneura, Schimpcr, appears to have a more limited geological 
distribution, being known from Triassic and Liassic strata only, while 
Phyllo theca, Bgt., shows a wider range. In India Schizoneura is known 
from the so-called Damuda and Pancliet groups ; in Australia it does not 
occur, but Phyllotheca occurs in both. 
Genus — PHYLLOTHECA, Brongniart , 1828. 
Phyllotheca, Brongniart, Prodrome, 1828, pp. 151 and 175. 
„ Morris in Strzelecki, 1845, loc. cit., p. 250, et seq. 
M‘Coy, Ann. and Mag., Nat. Hist., 1847, Vol. XX, Ser. I, p. 152. 
Dana, Geology U. S. Expl. Expedition, 1819, Vol. X, p. 710. 
Unger, Gen. et Sp. Plant. Foss., 1850, p. G2. 
B unbury, Quart. Journ. Geol. Soc., 18G3, Vol. XVII, p. 355. 
