— 
PO'TTIOIDEAE.  MACROMITRIUM. 441 
56. M. Swainsoni Brid. (I. p. 318.); dioicum; late 
dense pulvinatum subcompactum humile densissime folio- 
sum repens, ramis brevibus brevissime ramulosis luteo- 
viridibus inferne ferrugineis; folia crispula, madore paten- 
tia arcte imbricata, late oblongo - ligulata obtusissima, 
mucrone recto brevissimo terminata, Aic illic plicata nec 
rugulosa, dilatate canaliculata, alis convexis integris ob- 
scure viridibus, robuslius. rotundate areolatis, basi vix 
conspicue papillata margine limbo angustissimo pallido prae- 
ditis; perich. magis acuminata; theca JM. mucronifolii, 
sed minor, calyptra longe multifida, laciniis densius ap- 
proximatis; perist. simplicis dentes externi longiusculi al- 
bidi subintegri. 
Leiotheca Swainsoni Brid. I. p. 730, — | Orthotrich. Swainsoni 
Hook. Musc. Exot. t. 127. 
Patria. Brasilia, pr. Rio Janeiro: Swainson. Cuba: 
Dóring, cujus specimina. descripsimus. 
Peristomium thecarum vetustarum spec. nostrorum 
non vidimus. — A. JM. mwucronifolio proximo notis illu- 
stratis facillime distinguitur. 
57. M. stellulatum Brid. (I. p. 314, 741.) ; dioicum ; 
M. Swainsoni simile, sed rami foliis subhorizontalibus 
apice stellatim foliosis ; folia densissime imbricata, late ob- 
longo - ligulata breviter acuminato -= mucronata, superne 
minutissime rotundate, basi minute quadrate areolata di- 
stincte tuberculose papillata, limbo marginis carentia, alis 
valde. convexis plicate gibbosis; perich. late lanceolata 
acuminata plicata pallidiora magis elliptice areolata sub- 
crenulata; theca in ped. longiusculo ob/ongo- ovata sulcata 
pallide fusca, operculo conico acuto breviusculo, calyptra 
thecam 2/4 obtegente laevi profunde multifida, laciniis di- 
stantibus; peristomium duplex, externum: dentes lon- 
giusculi late lanceolati dense trabeculati densissime ap- 
proximati in membranam veluti connati, ruguloso - albidi, 
latere crenati, internum: dentes totidem, externos aequan- 
tes, tenues lanceolato -subulati albidi in membrana bre- 
vissima positi. 
