50 
basilari solum late convexo, supremo interdum angustissimo nusguam 
valde revoluto sed pro more erecto, ubigue constanter distinete denticu- 
lato, nervo valde regulari viridissimo stricto canaliculato supra me- 
dium evanido nunguam flexuoso vel furcato, cellulis densis linearibus 
brevibus, alaribus paucis minutis massa chlorophyllosa repletis mol- 
libus; perich. parva, e basi vaginata laxe elongate reticulata, plus 
minus subito in acumen longiusculum capillare reflexum protracta 
superne hic illic dente grosso vel minori ornata enervia eplicata, ex- 
terna minora e basi latiuscula ovata semivaginante subito reflexe acu- . 
minata denticulata, nusqguam margine revoluta. Theca in pedun- 
culo brevi levi rubente spiraliter torta, erecta minuta cylindrico- 
oblonga haud eurvata, operculo conico brevissimo obliquiusculo 
apiculato non protuberante, annulo simplici obsoleto ; perist. d. ext. 
breves angusti rubiginosi linea longitudinali obsolete notati parum 
trabeculati, intern? in membrana perbrevi lutea levi positi, in crura 
duo capillaria fissi, ciliis singulis rudimentariis.—Ob intlorescen- 
tiam pedunculum glabrum et habitum Hypno leto, cujus formam 
veluti diminutam refert, simillimum, sed criteriis litteris cursivis ac- 
curatius designatis prorsus diversum, exiguitate et statura Hypnum 
-velutinum in memoriam redigens. 
Patria. Ludovicia. In sylvis umbrosis prope Baton Rouge, Dr. 
Joor legit. Vere, 1873, Ex. herb. C.Mohr. _ 
4. Neckera ( Orthostichella) Ludoviciana,C. Mill., n.sp.—Perpusil- 
“la, habitu et statura Pilotricho eymbi/olio Sulliv. Floridano simillima, 
sed diversa: foliis indistincte spiraliter polystichis multo angustiori- 
bus minoribus longius et acutius acuminatis, indistincte denticulatis, 
nervo viridi, cellulis minoribus indistinctioribus mollioribus, alari- 
busque paucioribus minutissimis aureis ad alam infimam. positis. 
Patria. Ludovicia. Baton Rouge, ad truncos muscosos arborum 
Dr. Joor leg., 1873, Ex. herb. C. Mohr. 
NO. V. 
Bryum Mohrii, Lesquereux, ». sy—Hermaphroditum ? czspi- 
tosum, sordide /utescens, caulis fertilis brevissimus simplex vel innovanieé 
parce ramosus ; stevilis simplex subpollicaris erectus julaceus sed fili- 
formis. Folia appressa laxe subguadratim imbricata caulina et periche- 
tialia ¢ asi horizontali erecta lanceolata nervo valido percurrente acuta 
vel obtusiuscula ; folta innovationum oblonga versus basim angustiora — 
subdecurrentia, nervo valido viridi obtuse appiculata, carinato-concava, — 
margine plana integra, basi celiulis parallelogrammis, superne polygono 
angustatis arcolata, Theca in pedicello elongato poldicari et ultro vit 
flexuoso rubelio horizontalis vel erecta angusta oblongo-cylindrica sub 
ore constricta, operculo conico obtuso umbonoto sanguineo ; annulo lato 
compostto peristomii interni dentibus fissis ciliis singulis binisve | 
gracillimis appendiculatis interpositis, - 
To this description the author adds the following remarks: 
I could not distinctly see if this species is hermaphrodite, Itis — 
more probably dicecious, as the fragments found at the axils of the — 
upper perich. leaves appear to be abortive archegonia rather than 
anthers. The species is allied to what Muller describes as Bryum 
ebconicom, Hsch., and may be a variety of it. The specimens are, 
however, too few and incomplete for positive assertion” 
