calyptra
Quick Summary
The calyptra is a hoodlike structure found in plants, particularly in mosses where it is a membranous hood covering the capsule. In some plant roots, a related structure called the calyptrogen is responsible for producing the root cap, which protects the root tip as it grows. The term "calyptra" originates from the Greek word for "veil," reflecting its covering function.12
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bryophyteReproduction and life cycle…a protective structure, called the calyptra, that sheathes the growing embryo.
Read More…a protective structure, called the calyptra, that sheathes the growing embryo.
Read More- bryophyteAnnotated classification
…overarched by a spore-bearing layer; calyptra capping apex of elongating seta and influencing survival and differentiation of sporangium; spores generally shed over extended period; seta a rigid structure with internal conducting strand and holding sporangium well above gametophore in most instances. Subclass Andreaeidae Sporophytes usually lacking a seta; sporangium opening…
Read More…overarched by a spore-bearing layer; calyptra capping apex of elongating seta and influencing survival and differentiation of sporangium; spores generally shed over extended period; seta a rigid structure with internal conducting strand and holding sporangium well above gametophore in most instances. Subclass Andreaeidae Sporophytes usually lacking a seta; sporangium opening…
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