13. DICKSOXIA, §§ EUDICKSONIA. 51 



valves suboiliicular. — Balantium chrysotrichum, Ilassk. Cibotium speciosiim, 

 Blume. D. Bluinei, 31eU. D. magnificum, Ve Vriese. 



Hab. Java, ascending to 11,000 ft. 



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

 nate ; lower j^in^ice 12-15 in. 1., 3-4 in. br. ; piiuil. linear, quite cut down to the 

 rachis in the lower part ; scffin. ^ in. 1., close, oblong-deltoid, acute, sultfalcate ; 

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

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

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



Hab. South Brazil. 



10. D. sqiiarrosa, Sw. ; arborescent ; st. castaneous, ^-1 ft., densely clothed 

 \\\i\\ soft spreading fibrillose scales ^1 in. 1. ; fr. oliloiig-deltoid, tripinnate ; 

 pinnce ol)long-lanceolate, 9-15 in. 1., 4-0 in. br. ; pinnl. subsessile, linear, 2-3 in. 

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

 rigidly coriaceous ; hoih. 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. G8. 



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

 foot of a well-grown pinna. 



11. D. Berteroaiia, Ilk. ; arborescent ; fr. rhomboid, tripinnate ; rac/nses 

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

 5-6 in. br. ; pinnl. sessile, lanceolate, |-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 segments, \ lin. br., filling them 

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

 t. 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 deeplj^-toothed segmetits, which are cuneate at the base 

 on the lower, truncate on the upper side ; texture subcoriaceous ; 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. Sj). Fil. \. 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 ; loioer pinnce 12-18 in. 1., 12 in. br. ; 

 lower divisions oi the pnnnl. 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 ; so>'i 2 to 8 

 to a lobe, a hue 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. 7Q. 

 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 ^-f i-. 1., 

 4 in. br, 



14. D. straminca, Lab.; fr. tri-quadripinnate ; lower pinnos 1-2 ft. 1., 1 ft. br. ; 



