This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1857 Excerpt: ...HuXAl.fi sp., .4ucl.; Dicksokls sp., Bory. Sori indusiate globose, superficial or immersed; the receptacles terminal (or rarely axillary in the forks of the venules.) Indusium sub-orbicular, affixed by its posterior margin or base, rarely two or three becoming confluent. Veins pinnato-furcate from a costa, or more rarely repeatedly dichotomous; venules free. Fronds membranaceo-herbaceous or sub-coriaceous, pinnate or more frequently decompound; the divisions isomerous or dimidiate. Ehizome creeping.--This group appears to us to be properly separated from the Davallieat, on account of having its indusium fixed only by its base, very much in the way of Oystopteris. Both Leucostegia and Odontoloma appear to be entirely wanting hi good distinguishing characters. Of Monachosorum we know nothing beyond Kunze's figure and description; judging from which, however, it appears to be founded on an aged specimen of Acrophorus, from which the indusium had fallen away. (See No. 100, ante p. hex.) Acrophorus.--Divisions of the frond isomerous. Ex.: A. nodosus, Presl. I A. afflnis, Moore. A. immersus, Moore, A. hispidus, Moore. A. fill., inellus, Moore. A. bifidus (Davallia, Xft.) Odontoloma.--Divisions of the frond dimidiate. Ex.: A. repens (Dicksonia, Bory. A. adiantoides (ABpidium, HI.) A. cuneifolius(8accolomaJPr.) A. tenuifolius (LindsKa. 1.J A. Parkeri (Davallia, Hook. 127. HUMATA, CatanMes, Pralect. (1801), 272. Pachtpleubia, Presl; PTEEOiratnoE, Fie; Davallia sp., Auct.; NePhbodii sp., And.; Adiahti sp., Linnanu; Nephbolepidib up., Presl; Saccolomatis sp., Kunze. Sori indusiate, rotundate; the receptacles terminal and vertical, or rarely sub-terminal and oblique on the venules. Indusium sub-orbicular-reniforra or transversely oblong-reniform, pla...