Cephalozia (a Genus of Hepati?)

Cephalozia (a Genus of Hepati?)
Cephalozia (a Genus of Hepati?)
Excerpt from Cephalozia (a Genus of Hepati?): Its Subgenera and Some Allied GeneraThe following memoir does not profess to be a complete monograph of all known species of Cephalozia, but only a descriptive account of all the species I have been able to examine. A few additional species are known to me only by name, and a few others may lurk undistinguished, or as yet unpublished, in our large herbaria; but the material here brought together amply suffices for my purpose. I have chosen this genus for illustration, because, in an extended view of its limits, it comprises within itself certain characters heretofore deemed of generic or even of tribal importance. Such are, 1°, the frondose, as contrasted with the leafy, stem; 2°, the succubous, transverse, and incubous foliage; 3°, the acrogenous and the cladogenous fructification; all of which modes are to be seen in the various species of Cephalozia, and the two last-mentioned often coexist in a single species, or even in the same individual. On the other hand, characters hitherto overlooked, or underrated, are proved, by an extensive study of Hepatic?, to be constant throughout large groups of species, and therefore of great diagnostic value. These are 1°, the insertion of the branches on the stem: either all postical, as in Cephalozia, Kantia, &c.; or all lateral, as in Lejeuna, Radula, Frullaria, &c.; or some combination of these modes in various other genera, the most unusual being where all the leafy and the flowering branches are antical (epicladous), and only the root-bearing branches are postical (hypocladous), as in Anomoclada. The insertion of the branches with respect to the leaves varies considerably in different genera, but is usually constant to one type in the same genus, and sometimes throughout a series of genera. Thus, the branches are all exactly axillary to the sideleaves in Frullania, Scapania, &c.; infraaxillary (adjacent or adnate to the outer base of the leaf) in Lejeunea and Radula; axillary to the underleaves in Kantia, &c. 2°, the origin of the primary keels or angles of the perianth, which are either derived from the marginal (or intramarginal) sutures of the subplane flower-leaves, as in Lophocolea, Plagiochila, o&c.; or else are the already existing angles of the complicate (or at least carinate) flower-leaves, as in Cephalozia, Scapania, &c. 3°, the structure of the capsule-walls and the number of cell-layers composing them.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.Эта книга будет изготовлена в соответствии с Вашим заказом по технологии Print-on-Demand компанией ООО «Книга по Требованию». Print-on-Demand - это технология печати книг по Вашему заказу на цифровом типографском оборудовании. Книга, произведенная по технологии Print-on-Demand (POD) представляет собой классическую печатную книгу с соблюдением всех стандартов качества, от офсетной бумаги и плотного картона до качественного клея, используемого при изготовлении. Черно-белая текстовая или полноцветная иллюстрированная книга (в зависимости от исходного файла, подготовленного к печати) может быть изготовлена в разных вариантах: - в мягкой обложке (Клеевое Бесшвейное Скрепление); - скрепление скобой (для книг с небольшим количеством страниц); - в твердом переплете с клееным текстовым блоком; Материалы, используемые при производстве книги: - бумага текстового блока - офсетная (белая или кремовая) 80 г/м2 - мягкая обложка - бумага мелованная 250 г/м2; - ламинация обложки - матовая или глянцевая; - твердый переплет - картон 2 мм, каптал, белые форзацы, прямой корешок - сверхпрочный полимерный клей; - каждая книга упакована в термопленку. Каждый заказ обрабатывается в индивидуальном порядке: каждой книге, напечатанной по технологии Print-on-Demand, присваивается уникальный номер.