. 





TAB. XCVII. 







PARKERIA PTERIDOIDES. 



FILICES. 



Di 



IV. 





ARKERiACEiE. (CapsuIcB sparsae, omnino sessiles, annulo lato 



■ 



brevissimo fere obsoleto, nonnunquam distincto subcompleto, notatse. Semina 

 magna, trigona, striata.) Gleichene^. Bory, Spreng. 



Gen. Char. PARKERIA, Hook. Capsula? irregulariter dehiscentes, annulo, vel disco, striato, 



minuto, fere obsoleto. 





Parkeria pteridoides ; frondibus sterilibus pinnatifidis, laciniis subternis late ovatis incisis, fertilibus 



tripinnatifidis laciniis linearibus, stipite inferne tumido. 

 Parkeria pteridoides. Hook. in Eocot. FL t. 147. (ubi capsulae seminaque male repraesentantur,) 



et t. 231. 





H 



In aquis stagnantibus Guianae, apud Demerara. D. Parker 



Radix e fibris longis, descendentibus, numerosissimis, fusco-purpureis, villosis. 



■ 



Stipites plurimi ex eadem radice, crassi, teretes, inferne tumidi, et quasi inflati, venosi, subsquamosi, virides, dein 



fusci, valde cellulosi ; frondium sterilium horizontales, breves ; fertilium 

 Frondes steriles et fertiles dissimiles. 



pollicares 





Steriles natantes, stellatim dispositae, tres ad quinque uncias longae, circumscriptione deltoideo-ovatse, carnoso- 



* 



membranaceae, pallide virides, costatae, costa ramosa, reticulatae, pinnatifidae, laciniis late ovatis, subternis 



fere trilobis atq 



sinubus prolifer 





Fertiles semipedales et ultra, erectae, circumscriptione subtriangulares, tripinnatifidae, sinubus proliferis, laciniis 



linearibus, attenuatis, tereti-compressis, ultimis furcatis, primum viridibus dein flavo-fuscis, costatis, venis 

 utrinque parallelis, capsuliferis, reticulatim connexis. JRachis hinc sulcata. 

 Involucrum e margine lato frondis, tenui, membranaceo, subdiaphano, reticulatim venoso, replicato, totum dorsum 



tegens 



1 



Capsulcc venis costae parallelis insidentes, pro ratione plantae majusculae, pallide fuscae, omnino 



quasi tuberculatae (ob seminum pressuram), tenuissime membranaceae, diaphanae, irregu 



, sphaericae 

 dehiscentes 



sub summo lente reticulatim venosae, (venis flexuosis,) et hinc, prope basin, obsoletissime annulatae, annulo 



lato, paululum gibboso, transversim striato, striis subquinque. 

 Semina pauca (15 — 20) in singula capsula, magna, trigona, pallide fusco-flavescentia, subpellucida, angulis striis 



concentricis pulcherrime notatis ; intus materie oleosa repleta. 

 Fig. 1. Frondes steriles. f. 2. Frons fertilis: 



magn. nat. 



f. 3. Portio laciniae frondis fertilis a dorso visa. 





f. 4. Eadem, facie anteriore visa. f. 5. Eadem, involucro aperto, ut receptacula capsularum videantur. 



f. 6. Ejusdem pars : — magis 



f. 7. Capsulae cum annulo obsoleto, seu disco 



f. 8. Portio mem 



f. 11. Eadem: 



magis 



branae capsulae cum annulo : — magis aucta. f. 9. Capsula dehiscens. f. 10. Semina. 



aucta. f. 12. Integumentum seminis, cum ejus materie oleosa (f. 13.): — omnes magis minusve magnitudine 



- 



auctce. 





The kindness of our friend C. S. Parker, Esq. (after whom this singular and beautiful genus had 

 previously been named in the Exotic Flora), by putting into our possession numerous specimens in 

 all stages of growth, and the opportunity we have enjoyed of seeing the noble individual here figured 

 flourishing in the stove of the Liverpool Botanic Garden under the skilful management of the 



Messrs. Shepherds 



have enabled 



correct some very important errors which appear 



the 



work just mentioned, and to lay before the public, we trust, a complete analysis of the plant. 



The Figure above referred to at Tab. 23 1 . of the Exotic Ftora, represents the sterile fronds of the 

 plant, of the very existence of which we were not aware, when the first Figure in that work (t. 147.) 





