_ Kansas; and by H. J. Webber at Nebraska City, Nebraska( 1889) 
204 
mens cited in Lesquereux and James’ Manual for this species, for 
they cannot be found in either Sullivant’s or James’ herbarium. 
The description in the Manual does not fit the’ American 
specimens altogether, and we suspect from the localities that they 
may have confused our P. Drummondii with this species. The 
spores are described as “large.” Limpricht cites them as 026-032 
mm., or a little smaller than in P. pyriforme and P. turbinatum. It 
will be seen that the spores in our specimens are much smaller. 
The following remarks are copied from the Bryologia Eu- 
ropea, and refer to P. acuminatum (t. 300): 
“Cette espéce que nous avons recue de Schleicher, se distin- 
gue du P. pyriforme par sa grandeur moindre, par ses feuilles plus 
longuement acuminées ordinairement a bords entiers ou a peine 
denticulés, par la nervure mediane de la feuille qui est excurrente 
ou qui ne cesse qu’avec le sommet du limbe foliare, par |’ embou- 
chure plus large de la capsule séche et enfin par les sporules 
presque de moitié plus grandes.” 
PHYSCOMITRIUM KELLERMANI nN. sp. 
(Plate 200.) _ 
Autoicous, the antheridia terminal in basal buds. Plants scat 
tered or gregarious, dark brown when mature, small, seldom more 
than 3-5 mm. high; stems simple, with basal innovations; leave 
few, rosulate, 1-3 mm, long, ovate acuminate; vein excurrent into 
the subulate apex or ending below it; margins coarsely serrate: 
cells inflated, basal cells lax, scarcely elongated ; seta short, if 
mm. long, scarcely exceeding the perichztial leaves, occasionally : 
3 mm. long and exserted; capsule short pyriform or globose = 
when empty, contracted below the mouth or broadly flaring, 
bright brown when old, 1-1.5 mm. long, neck short, tapering wie 
swollen into an hypophysis, stomatose, rugose ; mouth bord re 
by 4-7 rows of cells, and a narrow persistent annulus of darker 
cells with a hyaline incurved row almost invisible; lid sm 
conic-rostrate ; calyptra large, 2-2.5 mm. long, 3-lobed ; spo. 
large, .045-.048 mm., rough, warty, but not spinose, maturing " 
March and April. ; on 
Type locality, Manhattan, Kansas, Kellerman (1889); also : 
collected by J. B. Hatcher at Long Island, Phillips Co-, Kansas 
_ (1885) (ex herb. E. A. Rau), by Miss Reed at Argentine, 
. 
