| 释义 |
‖ perichætium Bot.|pɛrɪˈkiːtɪəm|
[mod.L. (in Linnæus Gen. Plant. (ed. 5, 1754) 487), f. Gr. περί around + χαίτη long hair, as of a mane, leaves, foliage; in modern use taken also as = ‘bristle’.
Perichætium (on the analogy of perianthium, pericarpium, etc.) ought to mean ‘that which surrounds or encircles the hair or foliage’, but is employed to express the hair or foliage that surrounds.]
A whorl or cluster of modified leaves at the base of a group of reproductive organs, or of the fructification, in mosses and some liverworts.
1777Lightfoot Flora Scot. II. 737 Haller ranks this moss [Bryum cæspiticium] among the Hypnums on account of the vagina or perichætium at the base of the filament. 1796Withering Brit. Plants (ed. 3) I. 364 An anther taken out of the Perichætium or leafy calyx. 1863Berkeley Brit. Mosses Gloss. 312 Perichætium, the leaves immediately surrounding the base of the fruit stalk. |