622 PLEUROC., PERISTOMI. H. STEREODON. 
H. leptorhynchum., Mant. Musc, p.479. Sp. Musc. II. 
p. 232. Brevn, Nom. Crypt. p. 9:4... H. leptorhynchum 
pinnatum, ramosissimum, foliis falcatis lineari - acuminatis 
enervibus apice deniticulátis, operculo longissimo. ScuwArcr, 
Suppl, I. P. IT. p. 295. t. XCIIT. 
H. cyparioides. Musc. Rec. II. P. IT. p. 438. t. III. f. 4. 
Gznw. Dünnschnábliser JDichtzahn. GALL Stéréode à 
bec mince, 
In Novà PE ubi La BirranprgnE detexit, ad ar- 
ores, et in insulae Dourbonis sylvis humidis ad terram 
habitat , d MEM , mere aequinoctialis. 
aulis repens, decumbensve, rubens, tomento we 
obsitus, biuncialis, longior, divisus. Divisiones subpinna 
ramis simplicibus compositisque, alternis, in- 
aequalibus, subincurvis, planiusculis, extremis confertis, 
Folia dense imbricata, lineari- acuminata, concava , circi- 
nato -falcata , secunda, acumine siccitate ën Se , Subinte- 
gerrima, apice subdenticulata, enervia, nitida, pellucida, 
pallide e lutescenti viridia, elongato -areolata.  Perichae- 
tialia imbricatim conferta, exteriora ovata, interiora in cy- 
lindrum convoluta , oblongó- -acuminata, apice denticulata, 
tenuis, tortilis, rubellus, tandem ferrugineus. Theca cy- 
lindracea, breviuscula , subinaequalis, ad horizontem nutans, 
runnea. Peristomii exterioris dentes sedecim lanceolati, 
dense trabeculati, pallide. brunnei; interius, membrana 
pallide fuscescens, carinato-sulcata, in cilia gram im- 
ferrugineà in rostrum tenuissimum thecá longius pallidiusque 
rectiusculum eductum. Calyptra cuculliformis, angusta, fusco- 
straminea. 
Operculi 1 rostri tenuitate et longitudine inter omnes con- 
generes insignis, 
Variat: 
B. viridulus tenerior, foliis subimbricato-distichus, laete 
virens. 
Hypnum viridulum caule repente ramisque erectius- 
culis compressis, foliis subdistichis laxe subimbricatis con- 
