230 
versus vel ad apicem fructificantibus, capsulis nigricantibus. 
— Wall. Cat. No. 52. 
Has. Rio Janeiro, Dr. Wallich—This is very closely — 
allied to O. interrupta of North America, which differs, 
however, from it, as seen in our herbaria, in its glabrous 
fronds; but, if we are not mistaken, the latter is covered in 
a young and recent state with a ferruginous down, in which 
case we scarcely know how the present plant is to be dis- 
tinguished, except by its larger size, and denser pinnae, the 
lower ones being more approximated to the rachis. 
4, O. regalis. Linn. Sp. PI. p. 1521. 
Has. The northern parts of Europe.—This beautiful 
plant is sometimes found growing to a very large size. À spe- 
cimen was observed by Mr. Stewart Murray on the banks of 
the Clyde above eleven feet in height. 
5. O. spectabilis. Willd. Sp. Pl. v. 5. p. 98.—O. regalis, Mich. 
Fl. Bor. Amer. v. 2. p. 273.—O. regalis £., Linn. Sp. Pl. 
p. 1521. 
&. Brasiliensis : fronde rigidiore. 
Haz. Canada and the United States. . Organ Moun- 
tains, Brazil, Swainson.—Our specimens from the southern 
states are larger than those from the north, and have their 
pinnules longer and narrower. ‘The variety £. is more rigid, 
and the general outline more linear. 
6. O. Hilsenbergii. Hook. et Grev. : 
Frondibus bipinnatis, pinnulis lineari-oblongis obtusis in- 
tegris obscure crenulatis sepissime fusco-punctatis, pani 
terminali bipinnata, pinnulis lineari-elongatis. pei 
Has. Island of Madagascar, Mr. Hilsenberg. Professor 
Bojer. Dr. Lyall (No. 300.)—This graceful species is dis- 
tinguished by its lax panicle, whose pinnules are very slender 
and as long as the pinnules of the sterile portion of the frond. 
It is most nearly allied to the O. speciosa of Wallich, 
7. O. speciosa. Wail. i 
Frondibus bipinnatis, pinnulis oblongo-lanceolatis acutis 
