MOUNT RORAIMA IN BRITISH GUIANA. 89 
DICRANODONTIUM PULCHRO-ALARE, Broth., n. sp.  JDioicum, cxespitosum, ciespitibus 
densiusculis lutescentibus nitidis; caulis S cm., sterilis usque ad 12 em. altus, 
arcuato-flexuosus, fusco-tomentosus, densiuscule foliosus, sepe innovationibus 
elongatis gracilibus. Folia falcata, canaliculato-concava, e basi lanceolata longe 
subulata, usque ad 1 em. longa, superne dense et argute serrulata, nervo basi folii 
latitudinis tertiam partem vel paulum ultra occupante et superne dorso serrulato 
ibidemque folium totum occupante; cellule superiores anguste; basilares ad 
nervum lax, rectangulares, hyaline ; exteriores angustissime, limbum multi- 
seriatum efformantes; alares in ventrem magnum fugacem dispositz, laxe, 
tenerw, fuscee. Bractee perichetii Interna e basi vaginante subito in subulam 
integram attenuate, cellulis omnibus elongatis angustis teneris. Seta 2'5 em. 
alta, tenuis, serpentino-flexuosula, lutea, apice cygnea, rubra. Theca sicca erecta, 
. plicata, humida ob setam apice eygneam horizontalis, levis, oblonga, c. 2:5 mm. alta, 
leptodermis, fuscidula. Peristomium simplex; exostomii dentes 16, aurantiaci, 
c. 0°37 mm. longi et c. 0075 mm. lati, usque ad basin in cruribus duobus filiformi- 
bus inzequalibus articulatis dense papillosis divisi; spori 0017 mm., fusci, papillosi. 
Cetera ignota. | 
Mount Roraima, Ledge, 7500-8000 ft., McConnell & Quelch, 345, 346. 
Endemic. 
CAMPYLOPUS CHIONOPHILUS, Mitt. in Journ. Linn. Soc. Bot. xii. (1869), p. 81. 
Dicranum chionophilum, C. Muell. Syn. i. 398. 
Mount Roraima, Ledge, 7500-8000 ft., McConnell A: Quelch, 342. 
Found in the mountains of New Granada. 
CAMPYLOPUS Roratm&, Broth., n.sp. Dioicus, ezespitosus, ceespitibus densis nigrescentibus 
superne lutescentibus etiamque nitidiusculis ; caulis ad 3 cm. usque altus, tomentosus, 
dense et per totam longitudinem æqualiter foliosus, ramosus. Folia homomallula, 
erecto-patentia, canaliculato-concava, e basi oblongo-lanceolata, breviter subulata, 
c. 5 mm. longa et c. 075 mm. lata, marginibus summo apice serratis, nervo basi 
dimidiam partem folii latitudinis occupante, lamina usque ad apicem folii distincta; 
cellulze basilares subrectangulares, inter se poross, marginem versus angustiores, 
dein rhomboidez ; superiores rhombe:e, inerassatz ; alares numerosze, subquadratie, 
rubrz, basin totam occupantes. Cetera ignota. 
Mount Roraima, Ledge, 7500-8000 ft., McConnell A: Quelch, 347. 
Endemic. 03 : 
Species C. concolori, Brid. affinis, sed foliis multo brevioribus primo visu digno- 
scenda. 
CAMPYLOPUS ATRATUS, Broth., n. sp. Dioicus, robustus, ater, apice lutescens, niti- 
diuseulus. Caulis 10 cm. altus, erectus, haud tomentosus, dense et per totam 
longitudinem eequaliter foliosus, parce ramosus; folia sicca suberecta, humida 
recurvulo-patentia, canaliculato-concava, superne tubulosa, e basi lanceolata longe 
et anguste subulata, pilo stricto tenui hyalino longiuseulo serrato termunata, 
| ; N 
| SECOND SERIES.—BOTANY, VOL. VI. 
