Gen. XX. DIDYMODON.
Seia terminalis. Peristomium simplex e dentibti.s 16 vel 32 per
paria approximatis vel ad basin unitis. Calyptra dimidiata.
1 . D. gracile; cau le d en se cæ sp ito so e lo n g a to , foliis la n c e o la to -su b
u la tis pilo lo n g o co lo ra to te rm in a tis, cap su la e r e c ta cy lin dra c ea ,
op e r culo su b u la to , ca lyptra c ilia ta . (T a b . V.)
Hah. In monte Quindiu, regione temperata, Andes de Cundinamara.
Humboldt et Bonpland.
2 . D. squarrosum; c a u le e lo n g a to fle xu o so ram o so , fo liis u nd iqu e p a ten
tib u s squarrosis lo n g e la n c e o la tis flexu o sis ca r in a tis s e r ra tis,
s e ta e lo n g a ta , ca p su la cy lin d r a c ea , op e r culo lo n g e sub u la to . (T a b .
CL.)
H a b . In Nepal. Hon. D. Gardner.
3. p .? splachnifolium; c a u le su b e lo n g a to s im p lic e ,fo liis lin g u la tis r e ticu
la tis in teg e r r im is, ne rv o sub sum m um ap icem e v a n e s c e n te , s e ta
b r ev iu scu la , cap su la cy lin d r a c ea , op e r culo c o n ic o . (T a b .L X X V I .)
Weissia obtusa. Brid. Muse. Suppl. v. i. p. 118.
H a b . In insulis Antillarum. Prof. Richard. E Sancti Dominici insula
communicavit D. Coulon, In Hispaniola, ubi Poiceau legit et communicavit
(in Bridel).
Bridel’s character of his Weissia obtusa is too excellent to allow me
for a moment to doubt of its being the same as my D. ? splachnifolium
“ trunco erecto simplice longiusculo, foliis sparsis ovatis obtusis pellu-
cidis, capsula erecta oblonga, operculo subconico brevi.” In a subsequent
publication, too, he adds, it is found “ in omnibus Antillis.
Richard." OJ the Genus, however, 1 should add, he speaks with doubt:
fo r he says, “ Peristomatis dentes, quantum in statu valde læso cernere
est, erectiusculi, crocei, sedecim numero et forte geminati, tuncque
plantula nostra Swarzia vel Didymodon esset.”
Gen. XXL DICRANUM.
Sela terminalis. Peristomium simplex e dentibus 16 bifidis;
Calyptra dimidiata.
1. D.fragile; c a u le _ e lo n g a to ram o so , foliis su b se cu n d is su b u la to -
s e ta c e is serra tis sic c ita te su b fle x u o s is, perichætia lib u s ba si v a g in
a tis , cap su la e r e c ta cy lin dra c ea . (T a b . CXXIV.)
H a b . In Nepal legit Hon. D. Gardner, et J. Banks Baroneto communicavit
Gul. Wallich, M. D.
2. D. concolor; caule elongato ramoso, foliis undique vergentibus e
basi anguste lanceolata longissime subulato-setaceis subintegerrimis,
nervo latissimo, seta flexuosa, capsula ovata striata strumosa,
calyptra fimbriata. (T a b . CXXXVIII.)
H a b . In alto de Aranda, locis frigidis, prope Pasto (regnum Novum
Granatense) altit. 1560 hexapod. Humboldt et Bonpland.
3. D. longisetum; caule subelongato simpliciusculo, foliis falcato-
secundis e basi late ovata longe tenuiterque subulato-setaceis, seta
longa, capsula erecta oblonga striata, struma nulla, operculo longe
subulato. (T a b . CXXXIX.)
H a b . In temperatis regni Novi Granatensis, in sylvis prope Fusaga-
saga, altit. 1030 hexap. atque in apricis frigidis montis Chimborazo,
altit. 2430 hexap. Humboldt et Bonpland.
4. D. densum; caule simpliciusculo, foliis lanceolato-subulatis integerrimis,
nervo tenui, capsula ovata inclinata lævi absque struma,
operculo longe rostrato curvato. (T a b . CXL.)
H a b . In crepidinibus montis Quindiu, regione temperata. Humboldt
et Bonpland.
5. D . vaginatum; caule elongato ramoso, foliis laxis ebasi longe
vaginante subulatis vix apice serratis, nervo excurrente, capsula
inclinata ovata absque struma, operculo longe subulato. ( T a b ,
CXLI.)
H a b . In convallibus Andium Granatensiurn inter Almaguar et Pasto,
altit. 1200-1500 hexapod. Humboldt et Bonpland.
6. D. flexifolium; caule subnullo, foliis longissime subulatis flexuosis,
perichætialibus longe vaginantibus, seta mediocri, capsula oblonga
erecta lævi absque struma, operculo conico-acuminato. (T a b .
CXLIV.)
H a b . In (Ÿapite Bonæ Spei. D. Menzies, 1791.
7. D.fulvum; caule elongato erecto ramoso, foliis undique insertis
lanceolato-subulatis integerrimis concavis flexuosis siccitate crispatis,
nervo crasso, perichætialibus vaginantibus aristatis, seta breviuscula,
capsula oblonga cylindracea erecta. (T a b . CXLIX.)
H a b . In Nova Scotia. D. Menzies.
Gen. XXII. TRICHOSTOMUM.
Seta terminalis. Peristomium e dentibus 16 ad basin divisis, vel
32 per paria approximatis. Calyptra mitriformis.
1. Tr. vaginatum; caule erecto ramoso, foliis late lanceolatis lateribus
involutis, perichætialibus longe vaginatis, seta. elongata, capsula
oblonga, operculo subulato. (T a b . LXIV.)
H a b . I n i n s u l a Otaheite, mare Pacifico. D. Menzies, 1792.
2. Tr. perichætiale; caule erecto ramoso, foliis lanceolatis tenuiter
acuminatis, perichætialibus longe vaginatis, seta elongata, capsula
oblonga, operculo subulato. (T a b . LXXIII.)
H a b . In sinu Dusky Bay dicto, in Nova Zeelandia. D. Menzies,
1791.
Since the publication of the figure of this Moss I have seen more
perfect specimens in Mr. Menzies's Herbarium, and ascertained that the
operculum is subulate, nearly as long as the capsule.
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