Heterodadia. RHODOMELEiE. 1249 



Habitus fere Rhodomelee Lycopodioides statu hyeraali. Color e 

 lateritio purpurascens. Chartte adhan'et. 



CLII. HeterOCLADIA Becsne Pl. dc VArab. p. 178. Kiitz. 

 Sp. Alcj. p. 879. 



Frons plana inimerse costata prolitieationibiis a costa emergen- 

 tibus ramosa, avenia et subinordinate cellulosa, stratis fere 

 tribus contexta; intimi cellulis numerosis augustioribus 

 costam constituentibus; intermedii rhombeo-angulatis, du- 

 plici {aut triplici) serie utriusque paginfc cellulas interio- 

 res, fere e regioue positas, constituentibus; exterioris cel- 



lulis minoribus rotundato-angulatis. Ci/sfocmpia 



Stichidia ex ramulis propriis a costa utrinque emergenti- 

 bus seriatis formata, fiiiformi-clavata, rameliis callithamnioi- 

 deis vestita, intra corticem sphferosporas, circumcirca dis- 

 positas, in cellulis pericentralibus sul)verticillatas, ssepius ge- 

 minas, triangule divisas generantia. 



Frondis polificationibus decomposita? folia plana oblonga, 

 marginibus undulata, apice (in nostra) subemarginata cum acu- 

 mine, medio costa percursa, a qua foliola nova prolificantia cer- 

 nuntur; Foliola juvenilia obovato-oblonga, petiolo brevi teretiu- 

 sculo suffulta, apice emarginato-truncata cum acumine brevi, In 

 superiore parte folii, a costa utriusque paginte pariter prolifi- 

 cantia, adsunt stichidia, nunc seriata, nunc hic illic subfascicu- 

 lata, quasi omnino heterogenea, nempe ramulos minutos 2 — 3 

 lineas longos, filiformi-clavatos, sim])Iices aut parce ramosos, in- 

 ferne nudos verrucoso-insequales, superne ramulis callithamnioi- 

 deis vestitos (fere juvenilem diceres Griffithsiam equisetifoliam) 

 constituentia; rachis horum intra corticem polysiphonia, tubo 

 nempe centrali (fere callithamnioideo) articulato (articulis dia- 

 metro parum longioribus) cellulisque pericentralibus 4 (nunc 

 proximis duabus fere eundem orbem ingredientibus fere 6) sub- 

 feque longis, strato denique corticali, cellulis minoribus rotun- 

 dato-angulatis, contexta; sphserospora:? in cellulis pericentralibus 

 circumcirca evolutee, et ita verticillatse, at in singulis articulis 

 paucee, plerumque tantum 2 provenientes, et hai quoque leviter 

 obliquse positse, cortice tectffi, triangule divisse; maturescentibus 

 sphserosporis stichidia fiunt extrorsum verrucosa, et dissecta mon- 

 strant siphonem centralem inter cellulas preegnantes diversorum 



