Meiogyne

Cladus: Eukaryota
Regnum: Plantae
Divisio: Magnoliophyta
Classis: Magnoliopsida
Ordo: Magnoliales
Familia: Annonaceae
Genus: Meiogyne

-----------

Meiogyne is a genus of flowering plants with about 24 species[1] belonging to the family Annonaceae. Its is native from south western India through Thailand, Malaysia, Java, Sumatra, Borneo, Hainan, The Philippines to Australia.

Description

Trees or shrubs with pale straw coloured twigs. Leaves membraneous and with prominent veins. Flowers axillary, medium to large. Sepals 3, valvate, connate at base. Petals 6, valvate in two series, tapering gradually from a broad base upward and diverging, densely tomentose or sericeous-tomentose. The inner petals are slightly shorted in length with a warted patch at base inside. Stamens numerous with flat-topped slightly oblique connective tissue, concealing the anther lobes with viewed from above. Torus convex. Ovaries 2 to 5 with several ovules in two rows. Stigma discoid, sessile. Carpels thick-walled, sessile or sub-sessile.

Meiogyne virgata (Bl.) Miq. is the type species.

Meiogyne is different from Cyathocalyx in several ways. The leaf texture is different. Flowers are axillary and not extra-axillary or leaf-opposed. Arrangement of the is diverging from a broad base and not clawed and constricted and the base is not adpressed over the stamens. The warted base of the inner petal is peculiar. The stamens and stigmas are similar to Cyathocalyx. Meiogyne is similar to Polyalthia in its spreading petals and similarity of stamens, but the large number of seeds and sessile, discoid stigma are distinguishing features[2].

Species

* Meiogyne lucida Elmer
* Meiogyne pauinervia Merr.
* Meiogyne philippinensis Elmer
* Meiogyne virgata (Bl.) Miq.
* Complete list of species


References

1. ^ PPP-index
2. ^ Sinclair J.(1955) A revision of Malayan Annonaceae. Gardens Bulletin Singapore. XIV-Part 2. pp-276-279.

Plants Images

Biology Encyclopedia

Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License

Index

Scientific Library - Scientificlib.com