18 ARKIV FOR BOTANIK. BAND 10. w:o 2. 
Lamina 25—40 cm. long, 7--10 cm. broad, fully bipin- 
nate; pinne lanceolate, ca. 4—5 cm. long, 1!/» em. broad, 
with 5—7 pairs of free pinnules, which are obtusely toothed 
or entire, rarely lobed, the upper basal ones deeply pinnatifid. 
Basal scales black, those of the rachis pale, often hairlike, 
entire or very slightly toothed, deciduous and generally be- 
coming white with age. Stomata large, clearly visible. 
Patagonia: Territ. Chubut, Cholila, 30. 10. 1908, P. D. 
QUENSEL. — Skyring, P:ta Rocallosa, 29. 4. 1908. 
Although the larger forms of this variety look very 
different from var. typicum I can not consider them specifi- 
cally distinct; the var. typicum is probably an insular, reduced 
form of the more developed P. elegans, and the var. plicatum 
a still more reduced form of the same from the alpine region 
of the Andes. The specimens of var. elegans from Skyring 
resemble very much some forms of P. aculeatum, from which 
all forms of P. mohrioides can be distinguished by its fleshy 
texture, scaleless surfaces, thick and flat costules and by its 
stomata. These are very large and slightly immersed and 
are seen under a good loupe as small pits on the underside 
of the lamina, which appears to have been pricked by a 
needle. Such pits are not seen in P. aculeatum and P. 
multifidum, and they, seem to be a good specific character 
for P. mohrioides. In the var. typicum they are less distinct. 
Polystichum Brongniartianum Remy; Gay, FI. chil. 
6: 518. 1853. 
Chiloé: Ancud, 7. 7. 1908. nr. 313. 
The specimen agrees very well with the original descrip- 
tion; it is evidently the Chilean lobatwm form of the collec- 
tive species P. aculeatum. Rather small (258 cm.) and 
very scaly on stem, rachis and coste beneath; pinn: 4 cm. 
long, 1 em. broad, pinnate in the lower half only; pinnules 
broadly ovate, not auriculate, faintly toothed in the upper 
half and terminating in a mucronate tooth. 
Polystichum orbiculatum (Desv.) Gay, Fl. chil. 6: 515. 
Syn. P. orbiculare Christ, Ark. f. Bot. 41°. 3. 1905 pro 
parte — P. vestitum Gay. l. c. 517? — P. chilense (Christ) 
Diels, Natürl. Pflanzenf. 1*: 192. | 
