197 
1 H. Kemira^is aurea Lam. (sub Hypno), Eneyel, méth.^ III, 172. — 
Marais de la Palma, 1500 m. (PiU. n* 5665). — Distrib. : 
Antilles, Andes de Quito. 
112. Ris^odinm gracile Ren. et Gard. (sp. nov.). — 
Dioicum, gracile, sordide vel lulescenli-viride, 
interdum lutescens. Caulis primarius repens, 
secundarius erectus, rigidulus, saepe curvatus, 
interdum apice radicans et proliferus, arbuscu- 
losus, superne irregulariter bîpinnatîm ramosus, 
2-4 cent, longus, ramis et ramulis filiformibus, 
attenuatis, siccilale plerumque curvatis. Folia 
caulinasquarrosa, latedeitoidea, subito cuspidata, 
marginibus irregulariter sinuato-denticulatis, infe- 
riora enervia vel obsolete biiiervia, cetera usque 
in acumine tenuicostata, cellulis incrassatis, 
mediislinearibus, margines versus oblongis; folia 
ramea erecto-patenlia, laie ovatodanceolata, acu- 
minata, acuta, marginibus serrulatis, costa sat 
valida in acumine evanida, ramulina minora, 
angustiora;areolatioecellulisincrassatis,laevibus, 
brevibus, oblongis, ovalibus et subrotundis effor- 
mata. Folia perichaetialia oblongo-lanceolata, 
tenuicostata et enervia, superne serrata, in subu- 
lam patulam subserrulatam vel integram pro- 
ducta, cellulis angustis linearibus reticulata. 
Archegonia paraphysibus numerosis aequilongis 
intermixtâ. Capsula in pedicelio rubello, 12-13 
mill, longo, horizontalis, inclinata vel suberecta, 
turgide ovata, operculo conico-hemisphaerico, 
breviter recieque rostrato. Peristomii dentes 
lutescentes ; processus angusti, in carinafîssi, ciliis 
singulis validis interpositis. Planta mascula ignota. 
15 
