296 PROF. OLIVER ON NEW PLANTS FROM RORAIMA. 
(271*.) SELAGINELLA ($ НЕТЕКОЗТАСНУВ) RHODOSTACHYA, n. Sp. ; caule decumbente, ramis 
alternis deltoideis flabellato-bipinnatis, foliis heteromorphis distichis membranaceis, 
planz inferioris laxe dispositis erecto-patentibus ovatis obtusis paulo inzequilater- 
alibus, planze superioris consimilibus duplo minoribus valde ascendentibus, spicis 
brevissimis platystachyoideis, bracteis dimorphis ovatis acutis membranaceis. 
Belongs to the group Proniflore in the neighbourhood of S. consimilis and Otonis. 
The stems are half a foot in length, and Ше leafy branches $ ш. broad. This was 
contained in the collection without any number. 
MUSCI. By Mr. W. Mirren, A.L.S. 
Ноокевта ($ OMALIADELPHUS) CRISPA, C. Müll. Bot. Zeit. 1855, p. 768. Perfectly fruited, 
near encampment, no. 123. 
Hyporreryeium Tamanrisct, Brid.; Hypnum Tamarisci, Sw.; Hedw. Muse. Frond. t. 51. 
Without fruit. Near encampment, no. 265. 
POLYTRICHUM ARISTIFLORUM, Mitt. Journ. Linn. Soc., Bot. vol. xii. p. 620. А few 
barren stems, near encampment, no. 116. 
Creeping over the roots of this are a few stems of Jungermannia perfoliata, Swartz, 
or of one of the closely allied South-American species of the little group to which Mr. 
Spruce has applied the name Syzygiella in the ‘ Journal of Botany,’ 1876, intending it 
to include Jungermannia perfoliata, J. contigua, and J. concreta, Gottsche, J. plagio- 
chiloides and J. pectiniformis, Spruce, also J. macrocalyx, Mont. ; to these must be added 
7. geminifolia, Mitt., Journ. Linn. Soc., Bot. vol. vii. p. 164, from tropical Africa, and the 
J. subintegerrima, Reinw. Bl. et Nees, Hep. Jav. in the ‘ Synopsis Hepaticorum,’ placed in 
Plagiochila (p. 55). То this species belong P. variegata, Lindenb., P. variabilis, Lacoste, 
and also Р. securifolia, Lindenb. Sp. Hep. t. x., all of which have the leaf-angles united on 
both sides of the stem, even when they are not opposite, a characteristie which is not 
mentioned in their original descriptions, or depicted in their figures, nor in that of the 
J. macrocalyx аз found in the ‘Synopsis.’ The perianth in J. subintegerrima agrees with 
that found in the species allied to J. colorata, and, as in their case, is subtended by 
shortened and dentate involucral leaves. Exactly similar instances of conjugation of 
the leaf-angles are found in Plagiochila, some of which do not otherwise resemble 
each other. : 
PLAGIOCHILA ADIANTOIDES, Lindenb. Male stems only, upper slope, no. 283. 
ANEURA BIPINNATA, Nees (Jungermannia, Sw.). Specimens taken from large tufts, upper 
slopes, nos. 204, 284. 
In these specimens the stems are 4-5 cm. high, including the side branches 1 em. wide, 
the ultimate ramuli with a limb of about two rows of more pellucid cells ; in 4. fucoides, 
Hook. Musc. Exot. t. 85, this limb is very much wider; in А. Poeppigiana it is nearly or 
