22 . 
On stones along woodland rivulets, on the Palisades, near Closter, 
New Jersey. 
On account of the minute size of all its parts, this is probably 
the most inconspicuous of all known mosses, being invisible to the 
naked eye (in its native ravines) except with the aid of a strong © 
and favorable light. It differs from 7’ exilis, its nearest ally, in its 
much smaller size and shorter leaves, the blade almost (or often 
quite) obsolete. Calyptra conic, covering only the rostrum of the 
opiculum, very slightly fissured on one side at the base. Teeth of 
the peristome when dry widely spreading at the base, erect above 
the middle; when moist inflexed and forming a cone over the 
mouth of the capsule; sublanceolate, split nearly to the base into 
two unequal segments, papillose, the articulations below close and 
indistinct. 
5. Meesia Macouni (x. sp.)—Caule perbrevi dense cespitoso in- 
-novante fastigiatim ramoso radiculis rufo-brunneis et purpureis 
dense et minute scabris instructo, foliis e basi augustata oblongo- 
lanceolatis subacuminatis planiusculis integerrimis versus apicem 
subserratisve laxissime (ut in Funaria et Amblyodonte) areolatis, 
areolis medialibus oblongis basilaribus elongatis illis versus margi- 
nem sensim augustatis (ut foliis submarginatis videatur) superiori- 
bus subrhomboideis, costa valida basi dilatata in apicem producta, 
perichetialibus brevioribus solidioribus brevius acuminatis crassius 
costatis, capsula cum collo (pro genere breviusculo) subpyriforml 
siccata subincurva pachyderma, peristomii dentibus pro genere 
longis (fere ut in Amblyodonte) erectis obtusis integris, processibus 
quam dentibus longioribus, pedicello 2-3 unciali, paraphysibus com- 
pluribus valde clavatis: cxtera desunt. 
In the Peace River Country, British Columbia, Macoun (1872.) 
Remarkable for the very lax texture of the leaves, which are also 
broader than in our other species; also for the longish teeth 
of the onter peristome. It appears to connect the genus Meesia 
with Amblyodon. My specimens are too old, and the peristome 1S 
somewhat destroyed, yet it is sufficiently well preserved to show 
this relationship. Ihave not been able to detect any antheridia. 
Among the plants were a few very slender stems of a male plant 
having small distant distinctly margined bryoid leaves, and appar 
ently belonging to some Bryum. The buds resembling male 
flowers each contained a cluster of minute white fusiform worms 
instead of antheridia and paraphyses ! 
_ 6. Leskea (Thedenia?) Wolléi (n. sp.) —Plantee parvee demiss® 
intricato-crespitose vage et subpinnatim ramose et ramilose; 
ceespite superne fusco-viridi inferne magis minusve ochracel ; foliis 
diversiformibus in caule primario late deltoideo-ovatis abrupte: 
longe acuminatis, acumine valde flexuoso, illis in caule secundario — 
augustioribus brevius acuminatis, ramulinis rigidiusculis ovatls — 
haud vel breviter acuminatis valde concavis imbricatis siccitate 
subrugulosis, omnibus integerrimis cellulis crassioribus brevioribus 
confertioribus marginatis costa lata difformi brevi vel longiuscula 
simplici vel inequaliter bicrura instructis, reti e cellulis mediocrl 
bus rhombeis illis ad basis augulos (et in marginem usque ad 
apicem) quadratis formato: floribus et fructu haud visis. 
