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pericarpium, carpostomio apertum, foventia. Sphaerosporae per.
frondem sparsae oblongae cruciatim divisae (spec. l! 2! 4! 8! et 9!).
Species sant:
a. Gracilaria. Frondis cellulis angulatis, cellulis pericarpii
inordinatis angulatis, placenta elevata hemisphaerica.
1. Gr. erecta Grev.
2. Gr. confervoides Gi.
3. Gr. di vergens (Sph. divergens Ag.)
4. Gr. armata (Sph. armatus Ag.)
b. Plocaria. Frondis cellulis rotundatis endochromate granuloso
repletis, cellulis pericarpii radiatis, placenta minuta basali.
5. PL Helmintbochorton Ekdl.
6. Pl. dura Ekdl. (? Gracil. Durvillaei Post, et Rupe.)
7. Pl. licbenoides (Sph. lichenoides Ag.)
8. Pl. polycarpa (Grac. polycarpa Grev.)
9. Pl. compressa Ehol.
10. PL disticha Endl.
11. PL cervicornis (Sph. cervicornis Ag.)
12. PL corticata J. Ag. (Symb.)
13. PL multipartita Ehdl.
14. PL? Lambertii (Sph. Lambertii Ag.)
c. Acropeltis (Melantbaliae et Acropeltidissp. Montaghe).
Nullos characteres, quibus a Plocaria distinguatur, detegere valui.
15. Acr. chilensis Mokt.
16. Acr. obtusata J. Ag. Advers.
17. Acr. abscissa J. Ag. Advers.
18. Acr. Jaubertiana (Melantbaliae sp. Mortagke.)
In structura Pericarpii et frondis, nec non in placenta aut basali
aut elevata, differentiae adsunt, quae sectiones supra allatas
postulare videntur. An vero hae sectiones rite circumscriptae sint,
nondum dicere ausim, coccidiis in dimidia fere tantum parte
specierum adhuc cognitis. E genere autem excludendae: Sph.
repent Ag., qui sphaerosporis detectis, species Phyllotyli nobis
evasit; Sph. difficilis Ag. et Sph. purpurascens, qui Cystoclonii
species sunt, atque Plocaria cordolia Ehdlquae typum sistit
Solieriae. Reliquae ab Endliciero receptae et supra a me non
enumeratae species, nobis tantum descriptionibus cognitae sunt.
3» Rhodomkria. Frons cellulis rotundato-angulatis, versus superficiem
minoribus, contexta. ’Coccidia hemisphaerica juxta marginem
frondis sparsa, sporas obovatas, ad placentam centralem affixas, intra
pericarpium cellulosum, carpostomio apertum, foventia (spec. l!
2! 3! et 4!). Sphaerosporae juxta apices frondium in soros
indefinitos collectae, rotundatae, cruciatim divisae (spec. |! 2! 5! et 6!).
Species sunt: 1. Rh. palmetta Grev.
2. Rh. corallina Grev.
3. Rh. linearis J. Ag. Symb.
4. Rh. flabellifolia (Sph* flabellifolius Bory).
5. Rh. polyides J. Ag.
6. Rh. palmata Grev.
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