THYSANO-LEJEUNEA. 107 
F171, 15x °8, 1:35 x ‘85; lob 35x15; c Jn; f' 75 x°7, (7x8; 
br 1-4; br'* 14x °8; per 2°0 x “7mm, 
Elatiuscula, fuscidula, apice virescens, ceespitoso-stratificata. Caudex longe 
repens ramosus denudatus. Caules 1-3 pollicares assurgentes rigidi- 
usculi nigrescentes, pinnatim subramosi, raro symmetrice plume- 
formi-pinnati; alii rami devexi microphylli radicantes. 
Folia confertissima pectinatim patula convexa, siccando caule arcte cir- 
cumvoluta, suboblique ovato-oblonga linguzeformia e margine postico 
valide sinuato-incurvo subfalcata, pungenti-acuta seepe subapiculata 
integerrima, v. superiora apice angulata v. etiam subserrulata; lobu- 
lus 4-plo brevior linearis v. anguste rectangularis apice bidentellus, 
e folii margine incurvo seepe absconditus, plica longe ultra lobuli 
apicem transeunte; cellule: minutule pellucidee rhomboidee v. 
rhombeo-hexagone insigniter incrassate, nucleo angusto sinuato, in- 
feriores sensim multo majores. 
Foliola imbricata dimidium folium equantia late cuneato-obovata, e 
margine subbasilari recurvo spatulata, a basi fere ad medium im- 
presso-canaliculata, apice lato emarginato-truncata, sinu lunulato 
subacutove subintegerrimo, angulis apiculato-acutis, margine apices 
versus repando v. obtuse subserrato. 
Flores monoici: 2 in caulis ramive apice monotrope innovando 2-3-ni 
conferti, foliis solum unijugis inter duos flores consecutivos inter- 
positis; innovatione terminali seepe elongata foliosa apice iterum 
innovando-florifera. Bracteze foliis subsequales, complicato-bilobz, 
lobo forma foliorum acuminulato subserrato, lobulo dimidio v. duplo 
breviore ligulato acuto apice denticulato; bracteola equilonga longe 
cuneato-obovata carinata breviter acute bifida, segmentis acuminu- 
latis, supra medium serrulata. 
Perianthia subemersa 2-3-plo longiora quam lata, a basi brevi cuneaté 
triquetro-prismatica—raro subobovata, facie antica convexa medio 
unisulea, margine valde devexa, carinis acutis apicem versus per- 
anguste alatis denticulatisque vel spinulosis, dentibus dissitis subu- 
latis v. brevioribus haud raro obsoletis, apice rotundato-truncato 
minute rostellata. 
Andreecia ramulos terminantia; bracteze sub 6-jugze laxiuscule foliis sub- 
breviores, lobulo majori involuto. 
Thysananthus comosus Lindenb.! Syn. Hep., (Guiana, hb. Hook.—ex- 
empla typica—Thysano-Lej. dissoptera Spruce) certe distincta videtur, 
colore rufo-badio; caulibus elatioribus seepe bipinnatis; foliis ovali-rotun- 
dis abrupte apiculatis; foliolis dimidio majoribus, eadem forma ac 
Thysano-L. amazonice, apice tamen rotundatis vel obscure retusulis—nec 
insigniter lateque exciso-emarginatis ; bracteis magis spinulosis, lobulo 
subrotundo apice 2—3-fido; bracteola breviter bifida, segmentis acuminu- 
latis, spinoso-serrulata; perianthiis obovatis, ab apice ultra medium latius- 
cule trialatis, alis bilamellatis, lamellis bis laciniatis. 
Thysananthus comosus Lindenb.! Syn. Hep. lc. (Nova Guinea, hb. 
Hook. ete.—alia exempla typica) tertia species erit. Folia habet omnium 
densissima, oblique ovata, apice decurvo-cucullato abrupte apiculata sub- 
denticulataque; lobulum minutwm folio 6-plo breviorem; foliola dimidio 
majora oblongo-cuneata, apice exciso denticulata; bractearwm lobulum 
oblongo-retundum apice subbifidum, toto margine laciniato-serrato; bracteo- 
lam foliolis parum diversiformem (nec bifidam) margine autem subduplo 
inciso-serrato; perianthia (juvenilia), apice carinisque crebre longiciliata. 
