| 释义 |
perigone|ˈpɛrɪgəʊn|
Also in L. form periˈgonium.
[a. F. périgone, ad. mod.L. perigonium, f. Gr. περί round + γόνος offspring, seed.
Perigonium was introduced by Hedwig (1787) for the floral envelopes generally, and also used by him specially of Mosses; it was applied by Ehrhart in 1788 to the floral envelopes in Phanerogams: so périgone by De Candolle 1813.]
1. Bot.
a. = perianth 1 b.
1819Lindley tr. Richard's Observ. Fruits and Seeds 13 note, That part in Carex which Linnæus called a nectarium..is perhaps, as Mr. Brown has observed, a true perigonium. 1832― Introd. Bot. 114 Some writers, among whom are Link and De Candolle, have substituted Perigonium for Perianthium... Ehrhart, with whom the name Perigonium originated, called it double when the calyx and corolla are..distinct, and single if they are not distinguishable. 1880Gray Struct. Bot. vi. §1 (ed. 6) 164 Floral Envelopes, Perianth, or Perigone, the floral leaves or coverings. Ibid., Perigonium, a later term [than perianthium], has the advantage of meaning something around the reproductive organs.
b. The leafy investment of the male organs of mosses; the male ‘perianth’ (perianth 1 c).
1863Berkeley Brit. Mosses Gloss. 312 Perigonium, the male inflorescence. 1875Bennett & Dyer tr. Sachs' Bot. 320 The male perianth (Perigonium) [in mosses]..is of three different forms. 1889Bennett & Murray Cryptog. Bot. 142 The male perianth or perigone is usually composed of broader, shorter, and thicker leaves..not unfrequently red.
2. Zool. A sac formed by the outer parts of the gonophore of a hydroid.
1871G. J. Allman Monogr. Gymnoblastic Hydroids i. p. xv, Perigonium.., the walls of a sporosac by which the generative elements are confined, and in which, when fully developed, three laminæ may be demonstrated. 1888― in Challenger Rep. XXIII. ii. p. xxxv, The perigonium or sac formed by the more external parts of the gonophore.
Hence perigonial |pɛrɪˈgəʊnɪəl| a. [mod.L. folia perigonialia (Hedwig)], pertaining to a perigonium.
1870Bentley Man. Bot. (ed. 2) 366, 3 or 6 small leaves,..termed perigonial, and constituting collectively a perigone. |