218 Atkinson. — A Monograph of the 
it is narrowly constricted, especially at maturity. Antherid- 
band narrow, irregular, often interrupted. 
The only specimens of this species I have seen from the 
United States were from Herb. Wolle, marked * On stones 
Mt. rivulet, July I, 1874, Narrows.’ 
3. Lemanea nodosa (?) Kiitz. 
Some small specimens of a mature Lemanea were collected 
by me in the James river, Richmond, Va., and Rappahannock 
river, Frederickburg, Va., which seem to agree most nearly 
with small forms of Lemanea nodosa Kiitz. Pending a com- 
plete study of the different stages I refer the specimens 
provisionally to this species. The following characters can 
be given. 
Chantransia - form in tufts, branches attenuated at base, 
alternate, sometimes unilateral above, pencilled. 
Sexual shoots of a violet color, blacking when dry. 
Antherid-zones of fertile portions prominent, procarp-zones 
nearly cylindrical ; antherid-band broad, irregular, sometimes 
interrupted near base. Procarps in middle of procarp-zone. 
Sexual shoots straight or slightly arcuate. 
4. Lemanea australis Atk. 
Chantransia - form in dense tufts or in unbroken patches, yel- 
lowish or bluish-green, of two forms, sterile form 4 mm. -5 mm., 
fertile 2 mm. -3 mm. Branching alternate, or rarely uni- 
lateral, or opposite at base, pencilled when crowded, corymbi- 
form when quite free, slender at base, gradually increasing in 
size to middle region, where the cells are very large, sometimes 
nearly spherical. 
Sexual shoots green, when young not blacking by drying, 
in age blacking or darkening when dry, confined to the base 
of the Chantransia- form, either from a short principal axis, 
or a short branch ; stout ; sterile base gradually enlarging to 
fertile portion. Fertile segment nearly plane at base, strongly 
constricted at time of fertilization in the middle region and 
nearly plane at the distal end ; cortex of mature specimens 
in two layers of cells ; antherid-band narrow and interrupted 
