1	Upper portion of rachis with 1 or 2 proliferous buds on abaxial side.		109 D. gemmifera
+	Rachis without proliferous buds		(2)
2 (1)	Sori exindusiate.		110 D. gymnosora
+	Sori indusiate		(3)
3 (2)	Pinnae sessile or subsessile; lower pinnae spreading		(4)
+	Pinnae with distinct stalks; lower pinnae ascendant		(6)
4 (3)	Basal pinnules of lower pinnae shortened and parallel to rachis, amplexicaul.		111 D. indusiata
+	Basal pinnules of lower pinnae not shortened and not parallel to rachis, not amplexicaul		(5)
5 (4)	Lamina bipinnate; pinnules serrate with long aristate teeth; stipe usually purple.		112 D. tenuicula
+	Lamina tripinnate; pinnules pinnatisect, ultimate segments not spiny-serrate; stipe stramineous.		113 D. submarginata
6 (3)	Pinnae pinnatisect.		114 D. guangxiensis
+	Pinnae fully divided into pinnules with stalks or subsessile		(7)
7 (6)	Pinnules oblong, rounded or truncate at apex, usually entire		(8)
+	Pinnules deltoid-ovate, acuminate or obtuse at apex, pinnatilobate to pinnatisect		(10)
8 (7)	Scales on stipe and rachis black; pinnules rounded at apex, spiny-serrate; sori close to costa.		115 D. tenuipes
+	Scales on upper stipe and rachis brown, pinnules rounded at apex, not spiny-serrate; sori medial		(9)
9 (8)	Lamina broadly deltoid, basal pinnae much longer than those above		116 D. subtriangularis
+	Lamina ovate-lanceolate.		117 D. assamensis
10 (7)	Pinnules cordate, with stalks 2-3 mm		(11)
+	Pinnules rounded or cuneate, sessile or subsessile		(12)
11 (10)	Scales on rachis and pinna rachis black; sori slightly nearer margin.		118 D. integriloba
+	Scales on rachis and pinna rachis brown; sori slightly nearer costa.		119 D. tahmingensis
12 (10)	Scales on base of stipe black; proximal basal pinnules in basal pinnae much longer than those above, pinnatipartite to pinnatisect.		120 D. labordei
+	Scales on base of stipe dark brown; proximal basal pinnules in basal pinnae slightly longer than those above, pinnatilobate to pinnatifid.		121 D. pseudosparsa