March, 1£05.] Lycopodium porophilum in Ohio. 
B. Archegoxiata. Archegoniates. 15, 000 known living species. 
The intermediate plants; normally aerial plants but moisture-loving; 
always with an alternation of generations, the gametophyte compara- 
tively large and often hermaphrodite in the lower forms but minute and 
always unisexual in the highest ; the sporophy te small and without vas- 
cular tissue and permanently parasitic in the lower forms but large and 
with vascular tissue and becoming independent when mature in the 
higher; either homosporous or heterosporous, eusporangiate or leptospo- 
rangiate, never seed-producing; growing point commonly with a definite, 
two- or three-sided apical cell ; stems sometimes having secondary thick- 
ening by means of a more or less perfect cambium or by division in the 
cortical cells; oosphere produced in an ovary of definite character called 
an archegonium and always cutting off a ventral canal cell; fertilization 
asiphonogamic, the spermatozoids swimming through water. 
C. Spermatophyta. Seed Plants. 125,000 known living species. 
The highest plants; normally dry land plants; always with an alter- 
nation of generations; sporophy te large, heterosporous and eusporangiate, 
the spores not discharged ; the gametophytes usually minute, developing 
in the sporangia and thus parasitic on the sporophyte; female gameto- 
phyte, with an archegonium which develops an oosphere and ventral 
canal cell or with only a rudimentary ovary, retained permanently in the 
megasporangium (ovule) ; male gametophytes (pollengrains) at length 
discharged from the microsporangium (pollensac) but having a second 
period of parasitic growth by the formation of a pollentube, hence fertili- 
zation always siphonogamic ; male cells usually nonciliated but in the 
lowest classes developing into multiciliate, motile spermatozoids; plants 
producing seeds, the sporophyte embryo passing into a resting stage inter- 
vening between its intra- and extra-seminal development ; stems without 
true apical cells, but more commonly with a cambium zone from which 
secondary thickening takes place. 
LYCOPODIUM POROPHILUM IN OHIO. 
John II. Schaffxer. 
The Rock Lycopod, Lycopodium porophilum Llovd and • 
Underw., is a plant holding an intermediate position Vjetween L. 
selago L. and L. lucidiihim Mx. In examining some of mv herba- 
rium material recently I recognized a fine specimen of this species, 
which Mr. O. E. Jennings had collected for me for class use over 
a year ago. The collection was made near Lancaster, Fairfield 
Co. It probably has a considerable range in the state and should 
be looked for wherever sandstone cliffs abound. It has a rather 
stiff appearance and can be easily recognized form the descrip- 
tion as given in Britton’s Manual. The prostrate portion of the 
stem is short and has abundant roots. After several dicho- 
tomous branchings the vertical stems form a rather dense tuft 
6 — 12 cm. high. The plant has abundant brood buds. The 
leaves are nearly linear, acuminate, and nearly entire. They are 
considerably smaller than those of L. luciduliim and differ from 
L. selago in having the bases flattened. 
