ae 
f. 5. boliviensis. Very large; lamina about 50 cm long and broad, basal pinne 
25 cm long, firm, greyish green, fully 6-pinnate; ultimate segments close, oblanceolate, 
5—8 mm long, 2—4 mm broad, their teeth subspinulose. Sori 1—2 to each seg- 
ment with persistent, reddish, reniform or subpeltate indusia. 
Bolivia ad Rio Tocoraui, HEnzoe nr. II. 2295 (R). 
f. 6. — Fig. 25d. — Here I group together a series of specimens, which differ 
from the forms already described by the acute (not spinulose teeth of the ultimate 
segments. The lamina is of different size, often as large as f. genuina, but more 
open and not so broadly deltoid, generally ovate or ovate-lanceolate, generally much 
divided (5—6-pinnate). Some of the specimens may be old stages of f. jucunda, 
others seem rather different, f. inst. some small plants with lamina sometimes under 
10 cm long; these small plants are all from high elevations and have more scaly 
rachises than any other form of the species. A similar form from Roraima JENMAN 
(W. Ind. and Guiana F. 225) has called subsp. Klotzschii, but it cannot be con- 
sociated with A. Klotzschii Hook. It is probable that the specimens listed below 
represent several varieties but my material is too scanty to settle the question. 
Colombia: Popayan, LEHMANN nr. 4415 (B, RB). — Paramos de San Pedro, Ocafia, ScHuim nr. 317 
' (B; small). 
Ecuador: Andes of Loja, Lan Lucas, 9000’, LEHMANN (RB). 
Venezuela: Tovar, Moritz nr. 264 (B, RB, U); Fenpier nr. 170 (B; small); WaGENER (B). — MEnRIDa, 
Funck et Scuiim nr. 1584 (RB). 
British Guiana: Roraima, R. ScuompureK nr. 39 (RB), 1152 (B); Im Turn ‘nr. 26, 169 (W), 225 
(W, small). 
f. 7. var, dissecta (I'ée). — Fig.25¢.— Syn. Aspidium dissectum Fée, 8. mém. 107. 1857. 
A finely dissected, 6-pinnatifid form with the ultimate segments searcely 2 mm 
broad, oblanceolate, subacute or even obtuse, unisorous. Lamina 30 cm long, 
coriaceous. — Both Hooker (sp. 4: 148) and Merrentus (Prodr. Fl. N. Gr. 244) 
referred this variety to the var. rigidissimum, from which, my D. rigidissima, it 
differs considerably by the shape of the ultimate segments; to my mind it is in- 
timately allied to some of the forms grouped together under f 
Colombia: Paramos de San Pedro, Ocafa, 10—11000’, Scauim nr. 323 (B). 
_ f. Svar. aperta var: nov. — Fig. 26. — A peculiar looking variety or, per- 
— : haps, x new species, differing from all other forms by its very open lamina with 
the pinne at distances of 7 cm, divaricating, not touching each other; lamina 
/ 30—35 cm long, rather herbaceous, 4—5-pinnate; ultimate segments long-cuneate, 
