Botrychiwm. | FILICES. 1029 
late, entire or more or less deeply crenate-toothed. Veins flabellate, 
radiating from the base. Fertile segment equalling or exceeding the 
sterile, pedunculate, $-3 in. long, lanceolate-deltoid, 2-pinnate; the 
‘divisions all turned to one side, narrow, thickly covered with the 
yellowish sporangia. — Hook. f. Fl. Tasm. 154; Hook. and Bak. 
Syn. Fil. 447; Benth. Fl. Austral. vii. 690; Enys in Trans. N.Z. 
Inst. xvi. (1884) 363; Kirk, l.c. 366; Field, N.Z. Ferns, 156, t. 21, 
£8. 
SoutH IsLanp: Canterbury—South-western slopes of Mount Torlesse, alt. 
2700 ft., J. D. Hnys ! 
Not uncommon in the temperate and cool mountainous portions of the 
Northern Hemisphere, and in Patagonia and Australia in the Southern. The 
few New Zealand specimens that I have seen are much under the average size of 
the species in Europe or North America, but I can see no other difference. 
2. B. ternatum, Swariz, Syn. Fil. 172.—Rhizome short, stout, 
emitting numerous long and fleshy almost tuberous roots. Fronds 
solitary, 6-18in. long or more. Stipes 1-3in. long from the 
rhizome to the forking of the sterile and fertile segments, stout, 
thick and fleshy, terete. Sterile segment long-peduncled, variable 
in size, usually from 3-6 in. broad and long, but large specimens 
sometimes reach 9-12 in., and small ones are often dwarfed to less 
than 2in., broadly deltoid, tripartite at the base, the divisions 
usually petiolate, 2-4-pinnate; the ultimate pinnules oblong or 
ovate, toothed or crenate or almost entire; texture thick and fleshy. 
Fertile segment on a stout or slender peduncle 4-12in. long or 
more, usually overtopping the sterile segment; panicle 14-6 in. 
long, nearly as broad at the base, much branched, 3-4-pinnate. 
Sporangia very numerous.—Hook. and Bak. Syn. Fil. 448; Benth. 
Fl. Austral. vii. 690; Thoms. N.Z. Ferns, 99; Field, N.Z. Ferns, 157, 
t. 20, f.5, 5a. _B. virginianum, Hook. f. Fl. Nov. Zel. ii. 50 (not of 
Swartz). B. cicutarium, Hook. f. Handb. N.Z. Fl. 387 (not of 
Swartz). B. australe, 8. Br. Prodr. 164; A. Cunn. Precur. n. 160; 
fiaoul, Choix, 37; Prantl, Syst. Ophiogl. 340. 
Var. dissectum.-—Frond more slender; sterile segment much more finely 
divided, the ultimate pinnules laciniately cut into narrow lobes and teeth.— 
B. dissectum, Muhl. ex Willd. Sp. Plant. v. 64. B. australe var. millefolium, 
Prantl, Syst. Ophiogi. 341. B. biforme, Col. in Trans. N.Z. Inst. xviii. (1886) 
223. 
NortH AnD SovurH Isnanps, CHatHam IsLANDS: The ordinary form 
abundant from the North Cape to the south of Otago; var. dissectuwm often 
local. Sea-level to 3500 ft. 
Also in extratropical North America, Asia, and in Australia and Tasmania. 
Very variable throughout its range, and separated by Prantl and other authori- 
ties into 7 or 8 distinct species, the New Zealand forms being placed under 
B,. australe, R. Br. 
