DICKSONIA. 461 



3*. D. guatemalensis, Baker ; arborescent ; fr. oblong-deltoid, tripinnate ; 



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

 -f in br. ; segm. close, lanceolate, falcate, denticulate, 1 lin. br. ; texture sub- 

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

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

 with the edge ; valves of inv. equal, hemispherical. Cibotium guatemalense, 

 Reich, fil. Kuhn, Linn. 36. p. 152. 



Hab. Guatemala, Salvin & Godman, Wendland. 



5*. D. regalis, Baker ; arborescent ; fr. oblong-deltoid, tripinnate ; rachises 

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

 1-1^ 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 ; inv. with inner valve overtopping the outer. Cibotium regale, 

 Hort. Linden. 



Hab. Mexico. 



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 pinnae lanceolate, 6-9 in. 1. ; pinnl. sessile, linear, 1-1^ in. 1., ^- in. br. ; 

 segm. crowded, deltoid, falcate, acute, toothed, fertile deeply pinnatitid ; texture 

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

 smaller than in antarctica.Hk. Sp. Fil. 1. p. 68. t. 23. B. D. intermedia, 

 Colenso. 



Hab. New Zealand. 



7*. D. lanata, Colenso ; caudex 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 pinnae oblong-lanceolate, f-1 ft. 1. ; pinnl. 

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

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

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

 except the midrib. Hk. Sp. Fil. 1. p. 69. t. 23. C. D. Isevis, Reward. 



Hab. New Zealand. 



9. D. Sellowiana, var. j3, Karsteniana (Klotzsch) ; pinnl. broader than in the 

 Brazilian plant (-f in.), and sori rather larger. Karst. Fl. Columb. t. 194. 

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

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

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



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



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

 clothed with firm bristly scales, ~| in. 1. ; fr. oblong-deltoid, tripinnate ; pinnae 

 oblong-lanceolate, 1 ft. 1., 5-6 in. br. ; pinnl. subsessile, lanceolate, 2-3 in. 1., 

 f-1 in. br. ; segm. lanceolate, 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, f lin. br. ; valves of inv. round, hard, 

 glabrous. 



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

 pinna. 



