HYPNOIDEAE. PiLorniCHUM. = 038 
- ovata in acumen longum tenue flexuosum producta,“ ubi- 
que denticulata, planiuscula, tenuiter membranacea, plus 
minus implana, nervo tenui ultramedio, cellulis angustis- 
sime linearibus subconflatis amoene virescentibus, alari- 
bus ad marginem ventricose impressum rectangularibus 
incrassatis paucis; perich. pallidissima, tenerrime mem- 
branacea, e basi late vaginante subito fere in acumen 
longum flexuosum tenue dentatum producta, ante acumen 
säepius sinuato- emarginata, enervia, laxissime pellucide 
reticulata; theca in ped. breviter exserto rubro erecta 
turgide ovalis majuscula brunnea ,. latissime annulata, 
operc, conico oblique subulato concolori; perist. d. ext. 
robusti ferruginei fragiles, intus lamina flavida valde cri- 
stata, int. lati longi hiantes laeves flavi; calyptra late di- 
midiata pallida, apice scaberula. 
Leskea remotifolia €. Müll. Linn. XIX. p. 216. 
Patria, Mexico, Xalapa: Deppe et Schiede. Ve- 
nezuela, prov. Merida: Moritz. 
Habitu Pilotricho (Meteorio) awuronitenti similis et 
distinctissima species. 
Sectio IX, BBichelyma Myrin, ll. p. 142. — Caulis fluitans 
pleurocarpicus et cladocarpicus , ramis falcatis: folia secunda vel 
falcata, elongate lineari - reticulata, 
Subsectio L Eudichelyma C. Müll, H, p. 149. — Rami 
apice falcati, folia falcato- secunda; theca e foliis perich. ocreato - 
convolutis contortis emersa; calyptra thecam superans et basi in- 
cludens. 
Subsectio I. €'ryphaeadelphus C. Müll. Rami stricti, 
nunquam falcati; folia erecta vix secunda; theca in foliis perich. 
recte imbricatis immersa; calyptra minuta operculum solum obtegens. 
Gen. IV. Pilotrichum P. B. II. p. 146. 
Calyptra mitraeformis. Perist. Neckerae. 
Sectio 1. Distichia Brid. H. p. 147. — | Caulis . complanatus, 
foliis distiche imbricatis, oblongo - lingulatis; theca immersa, necke- 
roideo - peristomata. 
Sectio 1, Fontinalis Dill 1. p. 148. — Plantae hydrophi- 
lae fluitantes elongatae cladocarpicae maxime ramosissimae ; caulis 
A 43 * 
