Muscr Exortic1.—Humboldtiani. 
HOOKERIA SCABRISETA. 
Hookeria caule suberecto, vage pinnatim ramoso, com- 
presso, foliis undique imbricatis late ovatis subacumi- 
nulatis binervibus, seta scabra. (Tas. LI.) 
Has. Crepidines juxta Caripe, locis scopulosis, temperatis, irri- 
Suis, altitudine 480 hexapod. Humboldt et Bonpland. 
Caulis erectiusculus, vage pinnatim ramosus. Rami compressi. 
Folia undique imbricata, subdisticha, late ovata, planiuscula, 
acuminulo perbrevi terminata, sub summo lente vix serrulata, 
nervis duobus ante apicem evanescente instructa, Sulstantia 
compacta € punctis minutissimis. Seta pilis brevibus, crassi- : 
usculis, rigidis, horizontalibus scabra vel potius hispida, Cap- 
sul@ mature desunt. Calyptra albida, elongato-campanulata 
vel mitriformis e basi ad medium in lacinias numerosas angus- 
tas fissa, superne corpusculis claviformibus horizontalibus in- 
structa. 
Of the genus of this plant, although I am not so fortunate as 
- to possess ripe capsules, there can be no doubt 3 since in its ha- 
bit, as well as in the leaves and calyptra, it has so great a con- 
formity with the Hookeri@. Nor can I be at a loss for a spe- 
cifie character, the calyptra being cleft into a number of long 
and narrow segments, as in some Orthotricha from the same 
country, and the fruitstalk being in a most remarkable degree 
hispid; in this respect resembling the Neckera scabriseta of 
Schwaegrichen. 
Fig. 1, plants nat. size, Fig. 2, branch, Fig. 3, leaves, Fig.4, 
point of ditto, Fig, 5, fruitstalk and immature capsule, Fig. 6, 
calyptra.—magn, 
