DlCKSONIA. 461 



8*. D. guatcmalc7isis, Baker ; arborescent ; fr. oblong-deltoid, tripinnate ; 

 pinnoi oblong-lanceolate, 2 ft. or more 1., 10-12 in, br. ; pinnl. linear-acuminate, 

 ^-| in br. ; sc<)m. close, lanceolate, falcate, denticulate, 1 lin. br. ; texture sub- 

 coriaceous ; under surface glaucous, the ribs thinly jiilose ; lower venules sub- 

 pinnate ; sori minute, 8-10 to largest segments, imbricated, placed oblifiuely 

 witli the edge ; valves of inv. equal, hemispherical. — Cibotium guatemaiense, 

 Reich. Jll. Kiihn, Linn, 3G. />. 152. 



Hab. Guatemala, Salvln <& Godman, Wcndland, 



5*. D. reqalis. Baker ; arborescent ; fr. oblong-deltoid, tripinnate ; racldses 

 calvate ; pimue oblong- lanceolate, l|-2 ft. 1., 10-12 in. br. ; pinnl. sessile, 

 1-1 J in br., cut down to rachis or a narrow wing ; segm. close, lanceolate-falcate, 

 inciso-pinnatifid, 2 lin. br. ; texture subcoriaceous ; under side glabrous, slightly 

 glaucous ; venules pinnate in the lobes ; sori 10-12 to a segment, close, parallel 

 with the edge ; ino. with inner valve overtopping the outer. — Cibotium regale, 

 Hort. Linden. 



Hab. INIexico. 



7*. D. fibrosa, Colenso ; arborescent ; st. very short ; scales dense, fibrillose, 

 bright-brown ; fr. rhomboid, tripinnate, 3-4 ft. 1. ; rachises grey, densely pilose ; 

 central pinnce lanceolate, G-9 in. 1. ; pinnl. sessile, linear, 1-1^ in. 1., |-§ in. br. ; 

 scgm. crowded, deltoid, falcate, acute, -toothed, fertile deeply pinnatirtd ; texture 

 coriaceous ; under surface more or less pilose ; sori 4-6 to largest segment, much 

 smaller than in antarctica.—Hk. Sp. Fil. 1. p. C8. t. 23. B. D. intermedia, 

 Colenso. 



Hab. New Zealand. 



7*. D. lanata, Colenso ; caiidex low ; st. 1 ft. or more 1. ; basal scales very 

 dense, fibrillose, dark-purple ; fr. rhomboid tripinnate, 3-4 ft. 1. ; rachises 

 stramineous, glossy, naked ; central jiinnce oblong-lanceolate, |-1 ft. 1. ; /'2y/«/. 

 lanceolate, stalked, ]i-3in. 1., |-| in. br. ; barren segm. ligulate-oblong, den- 

 ticulate, 1^-2 lin. br., lowest often free ; texture more rigid than autarctica ; both 

 sicfe glabrous ; sori crowded, 6-12 to largest segment, filling up the whole of it 

 except the midrib.— If/t. Sp. Fil. 1. p. 69. t. 23. C. D. lajvis, Reward. 



Hab. New Zealand. 



9. D. Sellowiana, var. /3, Karsteniana (Klotzsch) ; pinnl. broader than in the 

 Brazilian plant (i-| in.), and sori rather larger. — Karst. Fl. Columh. t. 194. 

 D. gigantea, Karst. t. 193. y, Spruceana (Mett.) ; pinnK still broader (1 in.), 

 narrowed gradually from the base to an acuminate point ; sori larger (| line 

 broad), distant. — D. Spruceana, Mett. Kuhn, Linn. 36. p. 153. 



Hab. /3, Guatemala and Andes of Columbia, y, Tarapoto, East Peru, Sjyriice, 4728. 



10*. D. Youngice, C. Moore ; arborescent ; st. 6-9 in. 1., castaneous, densely 

 clothed with firm bristly scales, ^-J in. 1. ; //•. oblong-deltoid, tripinnate ; pinncB 

 oblong-lanceolate, 1 ft.' 1., 5-Q in. br. ; pinnl. subsessile, lanceolate, 2-3 in. 1., 

 |-1 in. br. ; segm. lance(date, close, 2 lin. br., sterile toothed, fertile deeply inciso- 

 pinnatifid ; texture rigidly coriaceous ; both sides green, the ribs below slightly 

 pilose ; sori 6-8 to lower segments, | lin. br. ; valves of inv. round, hard, 

 glabrous. 



Hab. New South Wales.— About eight pinnules to lowest half-foot of a well-grown 

 pinna. 



