stomiumn.

/ˈstəʊmɪəm/

Etymology: modern Latin, coined in German (K. Goebel 1901, in Organogr. d. Pflanzen 11. 753), < Greek στόμιον (see stomion n.).

Botany.

In ferns, a part of the wall of the sporangium which ruptures to release the spores.

ΘΚΠ

the world > plants > particular plants > ferns > [noun] > parts of

crooka1398

brake-root1626

indusium1807

membranula1821

sorus1832

foot1862

crosier1874

fruit-dot1880

fiddle-head1882

saddle1882

fern-cup1888

stomium1905

annulus-

1905 I. B. Balfour tr. C. E. von Goebel Organogr. Plants II. 575 A point of opening which we may designate the stomium occurs in all sporangia which discharge their spores into the air.

1936 A. J. Eames Morphol. Vascular Plants xii. 263 The annulus [of the Cyatheaceæ] is complete and oblique (nearly vertical) with a poorly defined stomium.

1969 F. E. Round Introd. Lower Plants xiii. 156 The sporangial head has a cluster or ring of thickened cells (annulus) which acts as the dehiscence mechanism working on a weaker region of unthickened cells (stomium).

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).

单词	stomium
释义	stomiumn. /ˈstəʊmɪəm/ Etymology: modern Latin, coined in German (K. Goebel 1901, in Organogr. d. Pflanzen 11. 753), < Greek στόμιον (see stomion n.). Botany. In ferns, a part of the wall of the sporangium which ruptures to release the spores. ΘΚΠ the world > plants > particular plants > ferns > [noun] > parts of crooka1398 brake-root1626 indusium1807 membranula1821 sorus1832 foot1862 crosier1874 fruit-dot1880 fiddle-head1882 saddle1882 fern-cup1888 stomium1905 annulus- 1905 I. B. Balfour tr. C. E. von Goebel Organogr. Plants II. 575 A point of opening which we may designate the stomium occurs in all sporangia which discharge their spores into the air. 1936 A. J. Eames Morphol. Vascular Plants xii. 263 The annulus [of the Cyatheaceæ] is complete and oblique (nearly vertical) with a poorly defined stomium. 1969 F. E. Round Introd. Lower Plants xiii. 156 The sporangial head has a cluster or ring of thickened cells (annulus) which acts as the dehiscence mechanism working on a weaker region of unthickened cells (stomium). This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1905
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