23 
2. 
5. Pinne linear, slightly lobed; lobes broader than long, oblique, 
as a rule faintly crenulate or obtusely dentate. Veins 2—5. 
6. Veins short. Pinnz not or shortly auricled at the upper 
base. 
7. Pinnz 25 em. long by 2'/2 cm. broad; veins 4 

5-jugate, 
rather patent; sori medial..... 12. S. rotundata (Willd.) C. 
7. Pinnze 12—18 cm. long by 1*/1—2 cm. broad; veins 
2—4-jugate, more erect, often very short and distant; 
Sour MEE Wave Intr»: nn aan sn he 13. S. Carrii (Bak.) C. 
6. Veins longer, ascending. Pinnz with a large, broad auricle. 
27. D. sancti gabrieli (Hk.) C. 
5. Pinnz linear or lanceolate, lobed !/s—!/» of the way down; 
lobes generally longer than broad. Veins 5—7 jugate. 
6. Pinne lanceolate, 12—18 cm. long, 3 cm. broad, with 
close, entire, falcate lobes. Veins 6—7-jugate.  Light- 
Dreenprie edat stent «efie tes Hc 14. S. tijuccana (Raddi) C. 
6. Pinnz linear or lanceolate with more or less repand or 
dentate lobes. Colour dark-green. 
7. Pinne narrow-linear; lobes patent with open sinuses 
between. Veins about 5 to a side. Sori inframedial. 
Immersed glands very large. Brazil. 
15. S. prionites (Kze.) C. 
7. Pinnz linear-lanceolate, broadest at the middle; lobes 
fa]cate, rather close. Andine species. 
8. Sori medial without paraphyses. Lobes falcate, more 
orjdlesssdentate e a -ierr 16. S. nephrodioides (K1.) C. 
8. Sori inframedial with articulated paraphyses. Lobes 
narrow, falcate, repand ....... 17. S. Michaélis (Bak.) C. 
4. Most pinnz with a long decurrent base, those of the upper 
third of the leaf connected by a broad wing to the rachis. 
5. Pinnz deeply lobed with narrow, repand lobes. 
17. S. Michaélis (Bak.) C. 
5. Pinne subentire, serrate or slightly lobed. 
6. Pinnz approximate, linear, serrate, about 15 cm. long, 
DUiswemmn DEGAGI AL Mia oe 18. S. longicaudata (Liebm.) C. 
6. Pinnz distant, about 15 cm. long, 3—4 cm. broad, subentire 
or irregularly crenate or slightly lobed; veins frequently 
anastornosmog e feria etait er 19. S. alloéoptera (Kze.) C. 
3. Sori confluent; venation meniscioid........... 20. S. opaca (Bak.) C. 
Pinne incised to a narrow wing to the costa, or lamina bipinnate- 
tripinnatifid. Veins often furcate. 
3. Lamina bipinnatifid with toothed or lobed segments. 
4. Sori without indusium-like, inferior scale. 
5. Segments generally toothed throughout, separated by broad, 
open sinuses, somewhat contracted above the widened base, 
5—7 mm. broad. Lower basal segment of most pinn 
considerably reduced. Brazil......... 21. S. caudata (Raddi) C. 
5. Segments close, up to 1 cm. broad, sharply toothed at their 
apex, the edges entire or faintly crenate. Lower basal segment 
scarcely abbreviated. Andes ........ 24. S. pellucido-punctata C. 
4. Most sori with an inferior, indusium-like scale; Andine and 
West Indian species. 
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