1024 



S. hamata. St. n. sp. 



Parva, fulva, gregarie crescens, humilis. Caulis ad 10 mm. longus, 

 simplex vel pauciramosus, subteres, validus, radicellis. longis fuscidulis 

 fusciculatis repens. superne procumbens. Folia cauiina late ovato-falcalu, 

 ubique sequimagna, apice obtusa, interdum erosa vel acuta, integerrima. 

 VAlulx folioruiu subapicales 12x27 parietibus maxime incrassatis, 

 lumine earum ilaque optime rotundato, medianas 12 X 30 (x, parietibus 

 minus validis, basales 18 X 45 teneras. Paraphylla foliiformia, lale 



lanceolala vel spathulala. varie incisa. iiiull iiius conlerta minii>que 



numerosa quam in St. paraphyllina, foliisque hawl insideutia. Flores 

 feminei ut supra descripti. 



Hab. Argentina (Lorentz), Brasilia subtropica (Puiggari f) 



JAMESONIELLA Spruce 1876. 



Planta3 foliiferae, majores vel spectabiles, lerricolae, rarius muscicol;»' 

 vel corticohe. stepe rigidae et fragiles, profunde ca3spitos;e vel iutricatim 

 procumbentes, virides, saspe flavo-rufescenles vel sanguinea;. Canlis e 

 caudice sublerraneo ortus, apice incurvus, subleres, validus, a3tate fuscus, 

 in paucis paraphylliferus, radicellis pallidis repens, superne vulgo arhizus 

 et procumbens vel erectus, hic illic e basi foliorum postica fasciculatim 

 radiculosus, sub flore innovatus, ramis lateralibus rarioribus, vulgo 

 posticis parvifoliis parum numerosis; stolones in medio infero caulis 

 postici. Folia caulina alterna, succuba, integerrima, ovata vel subrotunda, 

 superiora erecto-conniventia, concava, adulta plus minus eNplanata. 

 oblique- in paucis prarupte- inserta et fere semiamplexicaulia. Cellulx 

 trigonismajusculis vel maximis incrassataB, medio basis semper elongatav 

 cuticula la^vis, in paucis verrucosa. Amphig. caulina nulla. Inji c.s< •■••'• / 

 dioica. Folia floralia paucijuga, caulinis vix majora, vulgo utrinque 

 armata, intima multo minora, occulta, varie. saspe maxime profundeque 

 lacerata. Amphig. floralia magna, libera vel coalita similiterque lacerata, 

 Perianthia lerlilia longe exserta. obovato- oblonga. medio supero pro- 

 funde pluriplicata, ore amplo breviter. lobulato inlegro vel crebre armato. 

 Capsula (in paucis tantum cognita) ovalis. in pedicello longiusculo. ad 

 basin usque quadrivalvis, valvulis bistratis interne semiannulatim 

 ncrassatis. Sporx parvai, aspera. Elateres breves, laxe bispiri (haud rare 

 elateres persistentes in fundo capsulae magni 3-4 spiri inveniuntur). 

 87 



