Muscti ExorTici.—WMenziestani. 
HYPNUM ARBUSCULA. 
Typnum caule erecto bipinnatim ramoso, foliis undique 
imbricatis ovatis concavis integerrimis basi obsolete 
binervibus, seta brevi, capsula erecta ovata. (Tas. 
CXII 
Hookeria Arbuscula. Smith in Linn. Trans. v. 9. 
p. 280. t. 23, 
Has. In sinu Dusky bay dicto apud Novam Zeelandiam. 
D. Menzies, 1791. 
Caulis palmaris et ultra, basi repens, tomento fusco-ferrugineo 
obsitus, dein erectus flexuosus rigidus, inferne simplex, foliis 
parvis tectus, superne pinnatus, ramis iterum divisis, inferio- 
ribus longioribus, omnibus horizontaliter patentibus. Folia 
tescente-viridia, undique imbricata, erecto-patentia, nitida, 
ovata, concava, margine omnino integerrima, basi obsoletis- 
sime binervia. Perichetialia lanceolato-acuminata, enervia, 
recurva, Set@ 3-lineares. Capsula erecta, rufo-fusca. Pe- 
risiomium ut in Hypno, dentibus flavo-fulvis, arcte transver- 
sim striatis. 
Not being so fortunate as to possess the calyptra of this hand- 
some moss, I dare not venture to follow Sir J. E. Smith in making 
it a Hookeria, with which genus it does not to me appear to have 
much natural affinity. It has a tree-like mode of growth, very 
similar to Neckera dendroides, N. planifolia, Leskea concinna, 
Hypnum neckerioides, &c. differing, however, from all these in 
the foliage and fructification. In its leaves and capsules it bor- 
ders upon H. flexile. (Tan. CX.) 
Fig. 1, plant, nat. size. Fig. 2, portion of a branch and fruc- 
tification. Fig. 3, leaf. Fig. 4, perichetial ditto. Fig. 5, teeth 
of outer peristome, Fig, 6, portion of inner ditto.—magn. 
