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Musci ExorTrici.—WMenziesian?. 
NECKERA ABIETINA. 
Neckera, caule erecto pinnato, foliis undique imbricatis 
appressis striatis subintegerrimis acuminatis, caulinis 
ovato-deltoideis, rameis ovatis, seta exserta, capsula 
ovato-cylindracea, operculo subulato. (Tas. VII.) 
Han. In plaga occidentali Americe Borealis. D. Menzies, 1792. 
Caules plures ex eadem radice, spithamei et ultra, erecti, vel 
curvati, flexuosi, rigidi, inferne indivisi, subaphylli, superne 
pinnatim ramosi, ramis vix uncialibus, simplicibus, attenuatis. 
Folia ameene viridia, undique imbricate, erecto-appresssa, 
integerrima, vel, sub lente multum augente solummods, serru- 
lata, striata, nervo satis valido ad apicem attingente percursa, 
margine paululum recurvo; cazlina ovato-deltoidea, acumi- 
nata, ramea ovata, subacuminata. Perichetialia omnino in- 
tegerrima, enervia, exteriora ovato-rotundata, brevi-acumi- 
nata, valde concava, interiora longiora, pedicellum vaginantia. 
Seta brevis, foliis perichetialibus sub-duplo longior, erecta vel 
curvata, Capsula ovato-cylindracea, erecta, flavo-fusea. Oper- 
culum subulatum. Peristomii dentes ext. 16, rubri, trans- 
versim striati; int. 16, filiformes, flavi, hic illic per trabes 
uniti, atque basi membrana reticulata connexi. 
This plant is a Neckera of Hedwig. Should the calyptra, 
which [ have not had the opportunity of seeing, prove mitriform, 
it will be Dalionia of the Musc. Brit. It is a truly magnificent 
Species, and very unlike any thing with which I am acquainted. 
Fig. 1, plants nat. size. Fig. 2, cauline leaf. Fig. 3, ramal 
leaf. Fig. 4, point of a leaf. Fig. 5, perichztium and capsule. 
Fig. 6, outer perichetial leaf. F ig. 7, inner ditto. Fig. 8, por- 
tion of the peristome, 
