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species. Through the kindness of Prof. Wittrock, of the Botanical Museum 
at Stockholm, a fragment of the type from the Herbarium of Olaf Swartz, 
collected in Jamaica, was sent for comparison with Florida specimens. 
They represent the slender terminal branches of a specimen which Swartz 
says was a foot long. The branches are terete, as described, the leaves 
appressed, about i mm. long, acuminate with subulate points .1-.2 mm. 
long, and there are 2-5 papillae on each cell. 
Papillaria nigrescens var. Donnellii (Aust.) 
This variety differs in its bright green or yellow color, smaller size, more 
slender branches, many of the terminal ones being denuded at apex or end- 
ing in a leafy tip, leaves lanceolate-acuminate, cells papillose. There is but 
one fruiting specimen in the Austin Herbarium and that was collected in 
Louisiana by Dr. Charles Mohr. It has a seta 5 mm. long with conspicuous 
exserted paraphyses. The capsule is old and the peristome gone. 
Some Florida specimens have shorter, less acuminate leaves with larger, 
less papillose cells. They are generally black and stouter, with short terete 
branches, and closely appressed leaves, and may be referable to either the 
var. brevifolia Hpe., type locality Brazil, or to the var. illeccbra (Bvid.) C.M., 
type locality Haiti, but no specimens of either of these exist in our herba- 
rium Mr. Nash collected some specimens in Haiti (851) which are stouter, 
larger and darker colored than any from Florida. Specimens collected by 
Glaziou (7393) in Brazil show a marked difference between the branch-leaves 
and those of the stem, both in size and shape, and may be referable to P. 
appressum C. M. 
PlLOTRICHELLA CYMBIFOLIA (Sull.) Jaeg. 
This name is wrongly cited by M. Cardot on p. 30 of the Bryologist, 
1904, it should be given as above. It may be of interest to note that this 
species has clusters of septate gemmae in the axils of the leaves and evi- 
dently reproduces in this way, as the fruit is unknown. 
PlLOTRICHELLA LUDOVICIANA (C. M.) Jaeg. 
I cannot agree with M. Cardot in reducing this species to P. cymbifolia , 
(Musci Am. Sept, 44. 1893.) as it appears to be more regularly pinnate, the 
leaves not decurrent with fewer quadrate alar cells than in P. cymbifolia , 
the alar cells forming a brown auricle, leaves longer and more acuminate 
and less distinctly serrate and papillose. No. 78 R. C. Musci Am. Sept. 
Exsicc. appears to be P. Ludoviciana. Austin described the fruit (Bot. Gaz. 
4:i6i, 1879). Nor can I agree with Kindberg (Br. Eu. & N. A. 1 : 1 5, 1897) 
in referring both these species to Pterobryum. 
Pilotrichella Floridana (Aust.). 
Neckera ( Pilotrichum ?) Floridana Aust. Bot. Gaz. 4:152,1879. Speci- 
mens of this species cannot be found in Austin’s Herbarium, but from the 
description it would seem to differ only from the two preceding in the simple 
or sparsely branched stems and almost entire minutely papillose leaves. It 
may be the young stages of P. Ludoviciana. 
