a truss having an archlike form but unlike a true arch in that it is free to move horizontally at its base, as in expanding or contracting because of temperature changes.
the female reproductive organ in ferns, mosses, etc. Historical Examples The same moisture which caused the antheridia to open also brings about the opening of the archegonia. How to Know the Ferns S. Leonard Bastin The archegonia (Fig. 61) should be looked for in the younger plants in the neighborhood of those that bear capsules. […]
the female reproductive organ in ferns, mosses, etc. Historical Examples The neck of the archegonium is quite long, but does not project above the surface of the prothallium (Fig. 77, H). Elements of Structural and Systematic Botany Douglas Houghton Campbell Throughout he compares the structure with the pistillum (archegonium) of Bryophyta. Makers of British Botany; […]
the female reproductive organ in ferns, mosses, etc. noun (pl) -nia (-nɪə) a female sex organ, occurring in mosses, spore-bearing vascular plants, and gymnosperms, that produces a single egg cell in its swollen base archegonium (är’kĭ-gō’nē-əm) Plural archegonia The egg-producing organ occurring in bryophytes (such as mosses and liverworts), ferns, and most gymnosperms. The archegonium […]
archegoniophore archegoniophore (är’kĭ-gō’nē-ə-fôr’) A structure that bears the archegonia in some liverworts. See more at liverwort. Historical Examples The seta is short, the capsule being usually raised upon the archegoniophore. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 Various