| 21. | The plants are attached by down-growing rhizoids, usually in dense purple-black to rust-colored clumps.
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| 22. | The stems are erect, 1-2 inches high ( occasionally higher ) and are sparsely fibrous with rhizoids below.
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| 23. | Rhizoids are nearly lacking in aquatic forms, but there are usually numerous unicellular rhizoids of two types on the ventral surface.
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| 24. | Rhizoids are nearly lacking in aquatic forms, but there are usually numerous unicellular rhizoids of two types on the ventral surface.
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| 25. | One type is called smooth and the other type is the pegged or tuberculated rhizoids; these help in anchorage and absorption.
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| 26. | That said, rhizoids probably evolved more than once; the rhizines of lichens, for example, perform a similar role.
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| 27. | Leafy species can be distinguished from mosses on the basis of a number of features, including their single-celled rhizoids.
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| 28. | The hyphae of " C . bertholletiae " may or may not produce rhizoids at the base of the sporangiophores.
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| 29. | Hairless stems bearing rhizoids but with a similar anatomy to the aerial stems are possibly the rhizomes of " Trichopherophyton ".
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| 30. | There is limited production of rhizoids, thus, it is often difficult to identify them without the assistance of a dissecting microscope.
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