199 
correspondence on this subject. We would have adopted his 
name, which is very appropriate, in reference to the thick pedicel, 
if M. Cardot had taken the trouble to compare all the specimens 
as I have done, and had then recognized its claim to specific rank, 
but we question his right to coin another varietal name for one 
already printed, even though the’ first name, sevratum, was less 
suitable under the new species to which he referred it than under 
the old, and we also disagree with the second specific determina- 
tion, as the capsules have only 5-7 rows of cells around the 
mouth ; the lid is apiculate, and the spores are larger than in the 
Species to which he has referred it. We cannot use his original 
name, serratum, for the name of the species, because it has already 
been used in the genus as one of the synonyms of Aphane- 
thegma serrata by C. Miiller. 
Both of our own manuscript names, which we have rejected, 
have priority over his varietal one, and he had authentic speci- 
mens of both from us at the time that he might have compared 
with his. 
Physcomitrium turbinatum (Michx.) Brid. 
Plate (198.) 
The following description is drawn from American specimens 
only: 
Plants light green, gregarious, 8-20 mm. high; autoicious- 
antheridia terminal on lateral or basal branches ; stems short and 
Simple or taller and branching, 3-10’mm. high; leaves 3-5 mm. 
ong, oblanceolate or obovate from an oblong base, serrate above 
the middle; vein ending below the apex or occasionally excurrent 
Into an acuminate apex ; lower cells oblong, upper rhomboidal or 
agonal, the marginal longer and narrower, often yellow and _ 
inflated at their upper ends; seta 5-15 mm. long, erect or twisted 
and occasionally arcuate; capsule erect, 1-2 mm. long globose- 
Pytiform when fresh, becoming turbinate, and contracted below Ds 
the mouth and spore-sac when dry, dark brown and often urceo- 
late when empty; lid convex or mamillate, occasionally apiculate _ 
when dry, blunt; mouth bordered by 8-12 rows of cells and a 
narrow row of orange-colored cells, with a hyaline vesicular an-— ~ 
hulus, which is persistent and incurved after the falling of the lid; 
jlyptra cuinitinte abba and split unequally, 5-8 lobed and 
aed ; spores rough, .027-035 mm., maturing in spring. 
A common but variable species in old fields, grassy open 
Places jn gardens, etc., from Florida to Ontario, west to the Rocky 
