382 
LyYcopopium. 
Stems leafy, hard, branching, creeping, prostrate, or erect. 
Leaves small, entire or minutely serrate, inserted all round 
the stem, usually in 4 rows. Spore cases all of one kind, 
flattened, one-celled, two-valved, sessile in the axils of the 
upper leaves, or of bracts usually smaller or broader than the 
stem leaves, and forming terminal or lateral spikes. Spores 
all minute and powdery. 
TASMANITES PUNCTATUS (Newton). 
Bituminous discs (Sporangia) minute, rounded, usually 
flattened. Surface under microscope ornamented with minute 
crateriform rings, in the centre of each of which occurs a fine 
pore or tube communicating between the internal and ex- 
ternal surface. These tubes are generally filled with 
blackish matter, and appear through the transparent coating 
of sporangium wallas hairs. The peculiar nature of this 
organism and its ornamentation was first described by the 
author in “‘ Memoranda to Tasmanian Botanists” (p. 53), 
published in August, 1874, where it is described as “the 
spore-cases of some ancient tree allied to the existing club 
moss family.” Forms the bituminous matter of the shale of 
the Lower Coal Measures of the Mersey, known as Zasmanite, 
Fellow Coal, or Dysodile. 
fteferences.—Johnston Mem. Tas. Botanists, 1874, p. 53; Wewton 
Geol. Mag, 1875, Dec., 5, IL, pp. 337-342, t. 10, f. 1-9; Johnston 
pamphlet on Tasmanite, or Mersey Yellow Coal, Hobart, 1877, 
p. 6, 7. Australis ; R. Etheridge, jun., Cat. Aust. Fossils, 1878, 
p. 199. 
LEPIDODENDRON (Sternberg). 
Large trees with dichotomous branches, surface closely 
covered with alternately arranged rhombic scars, having a 
vascular cicatrix near the middle or upper angle, Leaves 
Inear, or peltate, fruit a strobilus or cone at the extremity of 
certain branches. 
Sub-Genus, Burcerta (Presl.). 
Scars nearly flat, obovate, rhomboic or quadrate, with a 
very small oval vascular cicatrix near the upper angle. 
This genus belongs to the Paleozoic rocks, and various por- 
tions ofthe same plant have been formed into Stigmaria (roots), 
Lepidostrobus (cones or fruit spikes), Sigillaria (fluted trunks 
of some species), Cyperites (foliage), Knorria (casts of stems), 
Sternbergia (pith) and other genera. 
LEprpOstROBUs. 
Cylindrical cones composed of winged scales, their axis 
traversed by a longitudinal cavity or receptacle, and termin- 
ating in rhomboidal disks, imbricated from above downwards. 
