484 
FILICES. 
[. Lomaria . 
2. L. Boryana, Willd. ; Hook, and Baker , Syn. Ml. 180. Root- 
stock erect, 1-2 feet high, clothed with rigid linear- subulate dark- 
brown scales above an inch long. Stipes short, stout, scaly at the base 
only. Barren frond 1-2 feet long, rigidly coriaceous, green and gla- 
brous on both sides, simply pinnate. Pinnae very numerous, ligulate, 
obtuse, 2-4 in. long, f — \ in. broad, cuneately narrowed to the base, 
the lower ones distant and growing gradually smaller. Veins fine, 
close, distinct. Fertile pinnae distant, not more than i in. broad. 
Blechnum tabulare, Kuhn , Ml. AJric. 94. 
Mauritius, at the Mare aux Yacoas and Trou aux Cerfs. Principally in the 
south temperate zone of both hemispheres. 
17. ASPLENIUM, Linn. 
Capsules stalked, splitting transversely, with an incomplete vertical 
ring. Sori dorsal, running down the veins, oblique with regard to the 
midrib and edge of the segments, single or double, usually linear. In- 
volucre the same shape as the sorus and rolled over it. — Ferns of very 
various size, shape, and texture, some of the species running through a 
wide range of variety in cutting; veining simple or compound. Dis- 
trib. Cosmopolitan. Species 300. 
Subgenus I. Asplehtum proper. Veins free. Sori single. 
Frond simply pinnate (in the typical form). 
Pinnae rhomboid. 
Frond §-l in. broad 1. A. Sandersoni. 
Frond 2-4 in. broad 2. A. resectum. 
Pinnae linear, equal -sided 3. A. longissimum. 
Pinnae linear or lanceolate, unequal-sided in the lower 
half. 
Frond membranous. 
Sori oblong, medial 4. A. lunulatum. 
Sori linear, nearly reaching both edge and midrib. 
Frond 2-3 in. broad 5. A. tenerum. 
Frond 4-6 in. broad 6. A. lineatum. 
Frond subcoriaceous. 
Frond about an inch broad 7. A. vequabile. 
Frond 4-10 inches broad. 
Rachis very furfuraceous 8. A. pellucidum. 
Rachis nearly or quite naked. 
Sori reaching from the midrib halfway to the 
edge 9. A. nitens. 
Sori nearly touching both edge and midrib . 10. A. falcatum. 
Frond bipinnatifid or bipinnate. 
Large ; none of the secondary segments free. 
Frond membranous 11. A. protensum. 
Frond subcoriaceous 12. A. caudatum. 
Small; 1-3 secondary segments free 13. A. bipartitum. 
Frond tripinnatifid or decompound. 
Ultimate segments cuneate-deltoid or rhomboid. 
Teeth of segments sharp and long. 
Frond coriaceous; rachis fibrillose 14. A. furcatum. 
