i: 
35 
the margins, its apparently exindusiate sori and other characters it is a species that 
not easily can be consociated with others of the subgenus; still in its setose, black- 
brown scales of the stipe, shape of segments and other characters it closely resembles 
D. chiriquiana and D. melanosticta, so that its most natural position is within the present 
group. : 
It is not unlikely that also D. vellea (Willd.) O. Ktze., placed in the group of 
D. submarginalis, on the study of better material than I possess will prove to be a 
member of the present group. 
In the following key I include also three of the five species mentioned above, 
which in the larger states are fully bipinnate below, referring to the number under 
which they were described in the first part of this monograph. The two species 
D. Lindeni and D. Salvini are bipinnatifid throughout. 
Key to the Species. 
— 
. 
Smaller species: lamina rarely 25 cm long often much smaller, lanceolate, ovate- 
lanceolate or deltoid, bipinnatifid-tripinnatifid, in D. Hemsleyana nearly ar 
partite 
ena Later species: lamina ovate, 25—100 cm long, tri-quadripinnatifid; basal pinne 
with their middle basiscopic pinnules somewhat produced, the basal one always 
more or less shortened. 8 
Scales of costz and costule beneath not bullate; veins reaching bee margin. : 
Scales of costee and costule bullate; veins not reaching the ma 
Basal pinne not considerably enlarged or not at all; lamina ovata: Lailelats 
or ovate-deltoid, underside glanduloso-pubescent. : 4 
Basal pinnz much the largest: lamina being nearly tripartite; underside not 
landuloso- ent, at best minutel sscnucge 
"corns << D. Hemsleyana (Bak.) C. Chr. (47) 
4, pera | lanceolate-oblong or ovate- iiiseanss lower nag of basal pinne not 
produc . D. strigilosa Dav. (43) 
ei Latif ‘ovate-deltoid or ovoid, lower side of basal nee produced 
304. D. chiriquiana n. sp. 
Lamina lanceolate, firm, glabrous; segments or pinnules ligulate, entire or deeply 
lobed — bes. Sori large, persisten 
Srne( be Suntan : 309. D. lanceolata (Bak.) O. Ktze. (46) 
— Lamina ebbing: Mnnesotate: ovate or deltoid, glanduloso-pubescent; segments 308 
ligulat 
rpaarnieey oblong-lanceolate, 4—6 cm broad by 10—20 cm long, very thin; pinne 
on long stalks, broadly deltoid; indusia minute 306, D. crystallina (Kze.) Maxon 
Lamina deltoid or ovate; pinnz short-stalked, oblong. 7 
Lamina broadly deltoid, ‘about 10 cm each way, glanduloso-pubescent beneath 
with short appressed, cylindrical; hairs scales of midribs iridescent ; indusia minute. 
05. D. hirta i tae 26 Ktze. 
a | #1] 
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