CHRISTENSEN, ON SOME SPECIES OF FERNS. 17 
Polystichum mohrioides (Bory) Pr. Tent. 83. 
While Dr. CHRIST considered P. mohrioides (Bory) (syn. 
P. elegans Remy) and P. andinum Phil. two distinct species 
I agree with most authors in uniting all the forms found 
under a single species, P. mohrioides, as I have failed to find 
real distinctive characters between the genuine P. mohrioides 
from Falkland Islands and the andine P. elegans Remy. I 
can, however, distinguish three rather different forms, which 
I characterize below. Dr. Curist has misunderstood the 
nomenclature of these forms, wherefore I give the full syno- 
nymy. 
1. var. typicum. 
Syn. Aspidium mohrioides Bory, Dup. Voy. Bot. 1: 267 
tab. 35 nie. 1. 1828. Polystichum andinum Christ, Ark. f. 
Bot. 4?. 2 pro max. parte. 
Lamina 15—25 em. long, 3—4 cm. broad, linear; pinne 
ovate, generally not imbricated, flat, 11/-—2 cm. loos l em. 
or more broad, deeply incised, not pinnatifid, with 3— 4 obtusely 
toothed TU on each side; basal scales ovate black in the 
centre, those of the rachis “aoe iightbrown with fimbriate 
margins; stomata not clearly visible under a loupe. 
Falkland Islands: West Island, Crooked Inlet, nr. 57. 
2. 12. 1907 — near Mt. Vernon. 4. 8. 1902. 
2. var. plicatum (Poeppig). 
Syn. Aspidium plicatum Poeppig fide Kunze; A. plicatum 
pg rigidum Kze., Linnaea 9: 94. 1834. Pipe andinum 
Philippi,  unaca 29: 108. 1857; Christ, Ark. f. Bot. 42. 2 
pro parte. 
Lamina 5—8 cm. long, 1—2 em. broad; pinne crowded, 
densely imbricated. Basal scales donealerous. those of the 
rachis lightbrown, entire or slightly toothed. Stomata 
clearly visible. 
Tierra del Fuego: Sierra Valdivieso, 12. 3. 1908. 
South Georgia: Cumberland Bay, Bore Valley, 5. 1902. 
3. var. elegans (Remy). 
Syn. Polystichum elegans Remy; Gay, Fl. chil. 6: 514. 
1853. Aspidium plicatum « laxum Kze. Linn. 9: 94. 1834; 
Polystichum mohrioides Christ, qe f. Bot. 4: 2. Aspidium 
mohrioides Hk. fil. Fl. antarct. 2: 392 tab. 149. 
Arkiv für botanik. Band 10. Neo 2. 2 
