/O6 
 Pinnae approximate; indusia somewhat glandular 1, De dilatata 
> Pinnae distant; indusia glandless 
«, Sori equally distributed over pinnsat 2e De spinulosa 
». Sori confined to basal half of pinnat% 3e De filix-mas 
(Gite fronds) 1. De dilatata (Hoffm.) A. Gray. Handsome fern}of broadly deltoid~lanceolat 
outline, of rather thin-membranous texture, arising from a moderately stout 
rhizome, the stipes conspicuously scaly with dark brown hyaline chaff, the 
rachises mch less so; blades tripinnate, 2.5-3.5 dm, long, the pinnae 
approximate upon the rachis, 10-14 cm, long, the basal pair unlike the upper 
in their oblique outline, the lower pinnules 7 cm. long, mech longer than 
the corresponding upper ones 2.5-3 cm, long, the lower pinnatifid, the 
ultimate segments serrulate with spinulose teeth; sori fewer, the indusia 
indistinctly glandular-ciliolate, 
Occasional, in moist wooded bottomlandse 
26 De spinulosa (0. F, M11.) Watt. Shield Fern, Medium-sized fern from 
stout rhizomes, the stipes with a few scattered pale hyaline scales, the 
rachises even less chaffy; blades bipinnate, 4 dm. long, the pinnae distant, 
not crowded, elongated-triangular, a little oblique to the rachis, pinnatifid 
or lowermost nearly completely pinnate, the pinnules serrulate, 10-15 m, 
(the lowermost of 2 basal pinnae much longer, 23-25 mm,) long, the acute- 
angled sinuses open, teeth spinuloses; sori submarginal, indusium glandless, 
rather early deciduouse 
Rere, in rich woods, known only from Orogrande Cre, 3000 ft., Epling & 
Houck 9349, This is the most northwestern station for this Eastern fern. 
