Musci Exorici.—Humboldtiani. 
HEDWIGIA SECUNDA. 
Hedwigia caule erecto ramoso, ramis subpinnatis, foliis 
secundis late ovatis acuminulatis marginatis striatis 
enervibus apice serrulatis, capsula ovato-cylindracea, 
operculo subulato. (Tas. XLVI.) aH 
Has. In regni Mexicani montosis apricis, juxta Toluccam, ad 
radices montis perpetua nive obtecti, regione frigida, altitu- 
dine 1640 hexapodarum. Humboldt et Bonpland. 
— «a 
Caules 3-4-unciales, erecti, flexuosi, subvage ramosi, ramis pin- 
natis, pinnis non raro flagelliformibus, subdenudatis, radican- 
tibus. Folia undique inserta, sed uno latere spectantia et ita 
secunda, late ovata, acuminulata, concava, striata, omnino 
enervia, margine incrassata, apice serrulata, flavo-virescentia, 
basi aurantia, Perichetialia lanceolata, striata, sepe invo- 
luta. Sea lateralis, sesquiuncialis, Cupsula ovato-cylindra- 
cea, ore parvo demum post operculi casum latiore. Opercu- 
lum subulatum, rostro inclinato. Calyptra dimidiata. 
In the Muscologia Britannica it is proposed that the genus _ 
Hedwigia should be confined to those mosses whose capsules 
have a naked mouth and lateral fruitstalks, Such is the case in 
the present instance; and so it is with another Humboldtian | 
moss, which differs from this in many particulars, and which I | 
shall soon take occasion to publish in this work. In both there 
is a considerable resemblance in the leaves to those of Anictan- 
gium ciliatum and imlerbe. 
is 
Fig. 1, plant nat, size. 
Fig. 4, leaf of ditto. Fig. 5, eapsule with operculum. Fig. 6, 
mature capsule. Fig, 7, calyptra.—magn, 
