![The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. FlG. 227.—Cibotium Memiesii. A, Pinnule with the sori is), X3; B, a single sorus showing the two-valved indusium, The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. FlG. 227.—Cibotium Memiesii. A, Pinnule with the sori is), X3; B, a single sorus showing the two-valved indusium,](https://c8.alamy.com/comp/RDFBH4/the-structure-and-development-of-mosses-and-ferns-archegoniatae-plant-morphology-mosses-ferns-flg-227cibotium-memiesii-a-pinnule-with-the-sori-is-x3-b-a-single-sorus-showing-the-two-valved-indusium-x9-c-a-single-sporangium-x80-r-the-annulus-d-a-paraphysis-x8o-dium-less-so-in-schiscea-where-the-sporangia-are-smaller-and-the-mother-cells-project-much-more-strongly-the-early-divi-sions-correspond-closely-with-those-of-the-hymenophyllaceas-and-as-there-the-tapetum-is-massive-and-two-layered-and-the-stalk-of-the-sporangium-very-short-the-wall-is-derived-in-the-di-RDFBH4.jpg)
The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. FlG. 227.—Cibotium Memiesii. A, Pinnule with the sori is), X3; B, a single sorus showing the two-valved indusium,
![The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. HYMENOPHYLLACEAE S79 later may be correlated with the close packing of the sporangia in the The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. HYMENOPHYLLACEAE S79 later may be correlated with the close packing of the sporangia in the](https://c8.alamy.com/comp/RDXF0D/the-origin-of-a-land-flora-a-theory-based-upon-the-facts-of-alternation-plant-morphology-hymenophyllaceae-s79-later-may-be-correlated-with-the-close-packing-of-the-sporangia-in-the-sorus-the-view-of-the-sporangium-from-the-side-on-which-dehiscence-takes-place-shows-that-the-annulus-is-not-continued-throughout-as-a-distinct-series-of-cells-fig-325-no-96-but-there-is-no-definite-group-of-cells-of-the-stomium-this-feature-is-again-comparable-to-that-in-gl-circinata-the-drawings-of-the-central-and-peripheral-faces-fig-325-nos-97-98-will-complete-the-knowledge-of-the-external-f-RDXF0D.jpg)
The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. HYMENOPHYLLACEAE S79 later may be correlated with the close packing of the sporangia in the
![A manual of zoology. Zoology. 17. CTENOPEORA. 261 (fig. 208) and Sderoxjhylla (fig. 207) are solitary. Others, like Oculma* branch, and still others form compact masses. Astrangia danae (fig. 214), the A manual of zoology. Zoology. 17. CTENOPEORA. 261 (fig. 208) and Sderoxjhylla (fig. 207) are solitary. Others, like Oculma* branch, and still others form compact masses. Astrangia danae (fig. 214), the](https://c8.alamy.com/comp/RE09EY/a-manual-of-zoology-zoology-17-ctenopeora-261-fig-208-and-sderoxjhylla-fig-207-are-solitary-others-like-oculma-branch-and-still-others-form-compact-masses-astrangia-danae-fig-214-the-only-true-coral-in-new-england-astrora-the-brain-corals-coeloria-fig-215-diploria-manicina-cladocora-fig-216-favia-fig-217-fig-218madrepora-erythrltea-after-klunzinger-2-fdngiacea-or-mushroom-corals-with-no-outer-wall-to-the-coral-some-are-colonial-others-fungia-are-solitary-a-sort-of-strobilation-in-de-velopment-3-poeosa-with-skeleton-porous-like-a-fi-RE09EY.jpg)