HERBERTA, 341 
Hlateres tenues dispiri, omnes decidui, alii autem in capsule fundo 
longius persistentes, Spore majuscule muriculate. Andrecia in 
spica brevi terminali; bractese paucijuge foliis subconformes diandre. 
Hab. In regionibus montosis ad saxa umbrosa arboresque. 
Distr. Per orbem terrarum disperse, nullibi copiosce, in Andibus 
autem sylvaticis, alt. 1200—3500", sat frequentes et ex arborum 
truncis ramisque czspitibus magnis dependentes, ad saxa rariores ; 
in planitie fluminis Amazonum nullibi visee fuerunt. E speciebus 
paucis hodie cognitis 4, 2 novas, legi. 
Herberta, e foliis prelongis, dicranis, decurvo-secundis, a ceteris 
fere omnibus hepaticis distat, et Hypnum uncinatum, H. commu- 
tatum, &e., vel Dicranum scoparium primo visu valde refert. 
Obs. In Herberta acanthelia and some other species of which I have been 
able to examine ripe fruit, the innermost membrane of the capsule is con- 
tinued over the apex of the pedicel, where it consists of lineari-fusiform, 
usually pointed cells, lined with semiannular fibre or sometimes with an 
unbroken spiral. I saw one case of a cell containing a double spiral. It 
was easily distinguished from the elaters by its much greater width, and 
the stouter laxer helix; besides by its being laterally connected with 
other similar cells into a continuous membrane. A few of the basal leaf- 
cells of some of the species are also lined by a spiral fibre, as was first 
poined out by Gottsche for H. juniperina. A good many elaters remain 
attached to the base of the capsule for a short time after it bursts, but are 
soon liberated; they are of the ordinary size and structure. 
A. Folia 4plo fere longiora quam lata. 
1. H. pensilis. Albido-viridis subsimplex, nisi pro innovatione sub- 
florali subindeque stolone uno alterove basali. F. fragilia dissita, 
distiche decurvula, subintegerrima, ab apice ultra 3 bicrura, basi 
integra ovato-oblonga, cruribus lineari-subulatis acutatis, cellulis 
vittee magnis ceteris concoloribus. Br. medio margine inciso- 
spinose. Per. ovato-subulata, laciniis apicalibus basi subspinosis. 
2. H. juniperina. Robusta flavida, in tate badia, subramosa flagellifera. 
F. imbricata deflexo-secunda ovalia, basi utrinque denticulata, ad 4 
bifida, cruribus lato-subulatis acuminatis, cellulis omnibus con- 
coloribus. Br. margine hamato-incisze, ab apice profunde bifide. 
Per, fusiformi-subulata, laciniis apicis basi hamato-incisis, 
B. Folia solum 2plo longiora quam lata. 
3. H. bivittata. Robusta fulva subramosa. F. confertissima, distiche 
devexa, late ovata, ad $ bifida, basi decurrente plerumque subciliata; 
cruribus semilanceolatis acuminatis vitta aurantiaca percursis. Br. 
ciliato-spinose, ad 4 bifida. Per. ovato-lanceolato-fusiformia, 
laciniis apicis tenuiacuminatis longispinis. 
4, H. acanthelia. Robusta fulva subramosa flagellifera. F. densa 
hamato-secunda, basin versus ciliata spinosave, minus distincte 
vittata, profunde (ad 3—}) bifida, cruribus longissime acuminatis. 
Br. basi longiciliatee, superne spinulose, ad 4 bifidee. Per. ovato- 
subulata, laciniis apicis caudato-acuminatis superne spinosis vel 
subintegerrinus. 
TRANS. BOT. SOC. EDIN. VOL. XV. 2 U 
