DICRANACEAE.  DICRANUM. 597 
lutescentes splendentes, rigidissimi, laxe cohaerentes, via 
tomentosi, subhumiles; caulis. gracilis fragilis flexuosus, 
ramis appressis dichotome divisus, bicolor, indistincte an- 
gulatus, apice tenui subincurvo acuto; folia caulina den- 
sissime appressa strictissima, anguste canaliculate -lanceo- 
lato- subulata brevia, apice truncatulo dentibus nonnullis 
distinctis serrulato, nervo latissimo subulam totam su- 
perne convolutaceam occupante, cellulis alaribus supra ba- 
sin fibroso- decurrentem tantum marginalibus teneris laxis 
pellucidis. 
Patria. America centralis, Costa Rica, in regione 
alpina Vulc. Irasu, alt. 11,000 pedum: A. S. Oersted 
mens. Febr. et Apr. 1848 sterile legit. 
Notis cursive impressis species facillime cognoscenda 
pulcherrima, JJ. bicolori proxima. 
70c. B. fiagellaceum C. Müll.; humile- dense com- 
pactum strictum gracile, ob flagella multa gracilia filifor- 
mia tenerrima fragilia stricta habitum setosum sistens, 
sericeum; folia caulina laxe imbricata, siccitate et madore 
appressa, brevia, lanceolata, cymbiformi- concava, summo 
apice parce denticulato terminata, strictissima , margine 
erecto, nervo latissimo planissimo laevissimo paginam fo- 
lii superiorem totam occupante, cellulis parvis subquadra- 
tis mollibus chlorophyllosis, alaribus multis laxis. planis 
fuscis. : Caetera desunt. > 
- Patria; Mexico, prov. Mechoacan, Cerro San An- 
dres: 1849. m. Marti inter Symblephar. Chrismari legit 
» Chrismar. 
A D. flagellari primo visu cespitibus compactis ner- 
voque Campylopodis lato, a Campylopodibus omnibus fla- 
gellis descriptis differt. 
70d. B. braehyphylum Mitten (in Lond. Journ. of 
bot. 1851. p. 521); cespitosum gracile strictum lutescens, 
inferne fusco- tomentosum, innovationibus julaceis; folia 
caulina siccitate arcte appressa remota lanceolato -acumi- 
nata, summo apice paree denticulata, basi cellulis alaribus 
valde conspicuis; comalia densiora; perich. vaginantia su- 
