The New American Cyclopaedia Volume 5; A Popular Dictionary of General Knowledge (Paperback)

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. 1859 Excerpt: ...by the letters A, 13, C, &c.: A.--2feuronteriflef: Fronds pinnate or bipinnatc. Secondary veins either rising from a medial nerve vanishing above, or emerging and branching from the base of the leaflets without a medial nerve. 1. NoEOGEUATiiiA, 6 species, all from the old red sand stone. 2. Opontopterts, 7 species, mostly from the louver coal. 3. Bictygpteris, 1 species, from upper coal. L Cyclopteris, C. jialetUita, Brongn., V7)itt?estya tltgan Newberry: lower coal. 5. NEpiiROPTfcuis, 8 species, mostly from upper coal. "The genus can scarcely be separated from the. following, most of its species being only large deciduous leaflets attached around the main rachis of Heuro-pterix" 6. Neuropteris, 27 species, mostly from the middle and upper coal. B.--Sphenopteridece. Frond bi-tripinnatiiid, or bi-tripinnate; pinnules mostly lobed, sometimes entire; nerves pinuately forking, with a primary nerve slightly distinct, flexuous; secondary nerves obliquely asce'nding in each division, either simple or forking near the apex. 1. Spiienopteris, 27 species. The genus includes 2 groups, one having round, large, entire leaflets, belonging to the lower coal, the other to the upper. 2. Hymenopiiyllitks, S species. Six would be added to ScJiteopterte by some authors, and these are mostly or wholly from the upper coal; the others are from the lower. C.--PecopteridecF, Frond simple? pinnate, bi-fdpinnate, or hi-tripinnatifid; pinnules attached to the rachis by the whole base, sometimes united together. Medial nerve well marked; secondary nerves emerging more or less obliquely from the medial nerve, simple or furcate. 1. Asplenites, 1 species, upper coal. 2. Alethopteris, 15 species, appear to bo distributed through upper and lower coal. measures. 4. Sigillaria, ...