13. DICKSONIA, EUDICKSOMA. 51 



valves suborbicular. Balantium chrysotrichum, Hassle. Cibotium speciosuin, 

 Blume. D. Blumei, Mett. D. magnificum, De Vriese. 



Hab. Java, ascending to 11,000ft. 



9. D. Sellowiana, Hk. ; arborescent ; fr. 6-8 ft. 1., 2-3 ft. br., lanceolate, bipin- 

 nate ; lower pinnce 12-15 in. 1., 3-4 in. br. ; pinnl. linear, quite cut down to the 

 racliis in the lower part ; segm. % in. 1., close, oblong-deltoid, acute, subfalcate ; 

 main rachis usually smooth above, densely tomentose and subasperous below ; 

 texture coriaceous ; fertile pinnl. slightly contracted ; sori 2 to 6 to a lobe, a 

 line across ; voices suborbicular. Hk. Sp. Fil. 1. p. 67. t. 22. B. 



Hab. South Brazil. 



10. D. squarrosa, Sw. ; arborescent ; St. castaneous, -1 ft., densely clothed 

 with soft spreading fibrillose scales -1 in. 1. ; fr. oblong-deltoid, tripinnate ; 

 pinnce oblong-lanceolate, 9-15 in. 1., 4-6 in. br. ; pinnl. subsessile, linear, 2-3 in. 

 1., f-j in. br. ; segm. lanceolate, sterile toothed, fertile deeply pinnatifid ; texture 

 rigidly coriaceous ; both sides green, the ribs below scabrous ; veins 4-6-jugate, 

 forked ; sori 6-8 to lower segments, ^ lin. br., occupying the whole of the seg- 

 ments except midrib and tip ; valves of inv. round, firm, glabrous. Hk. Sp. Fil. 

 1. p. 68. 



Hab. New Zealand and Chatham Island. About a dozen pinnules to the lowest half 

 foot of a well-grown pinna. 



11. D. Berteroana, Ilk. ; arborescent ; fr. rhomboid, tripinnate ; rachises 

 stramineous, naked on the under side ; pinnce oblong-lanceolate, 12-15 in. 1., 

 5-6 in. br. ; pinnl. sessile, lanceolate, f-1 in. br. ; segm. close, lanceolate, sterile 

 subentire, fertile deeply pinnatifid ; texture rigidly coriaceous ; both sides green, 

 glabrous ; venules forked ; sori 6-8 to lowest se'gments, lin. br., filling them 

 except broad midrib and tip ; valves of inv. round, rigid. Hk. Sp. Fil. l.p. 67. 

 *. 23. A. 



Hab. Juan Fernandez. Caudex 6-15 ft. high. 



12. D. Culcita, L'Herit. ; roots from a thick rhizome, densely clothed with 

 shining ferruginous hairs ; fr. 12-18 in. 1., 1 ft. br., tripinnate ; lower pinnl. del- 

 toid, their divisions ovate, cut down to the rachis in the lower part, with oblong- 

 rhomboidal unequal-sided deeply-toothed segments, which are cuneate at the base 

 on the lower, truncate on the upper side ; texture subcoriaeeous ; rachises nearly 

 naked ; both surfaces naked ; fertile fr. so much contracted that there is very 

 little membrane between the sori, which are 1 line across, with reniform sub- 

 equal valves. Hk. Sp. Fil. l.p. 70. Balantium, Kaulf., J. Sm. 



Hab. Madeira and the Azores ; so abundant that the dense woolly covering of the 

 rhizome has now become an article of commerce. 



13. D. coniifolia, Hk. ; fr. tripinnate ; lower pinnae 12-18 in. 1., 12 in. br. ; 

 lower divisions of the pinnl. deltoid-acuminate, their segments cut down nearly 

 to the rachis, with ovate-rhomboidal, bluntish, deeply-toothed lobes ; texture her- 

 baceous ; upper surface naked, lower and the rachises slightly hairy ; sori 2 to 8 

 to a lobe, a line across ; valves equal, reniform, several times broader than deep. 

 Hk. Sp. Fil. 1. p. 70. t. 24. A. D. Martiana, Klot. Hk. Sp. Fil. 1. p. 70. 

 t. 24. B. 



Hab. Jamaica and Columbia, southward to Brazil. A much more divided plant than 

 any of the preceding, with sharply-cut acute ultimate segments, not more than -| in. 1., 

 J in. br. 



14. D. straminea, Lab.; fr. tri-quadripinnate ; lower pinnce 1-2 ft. 1., 1 ft. br. ; 



