The anther wings of a hoya are made up the two sides of a channel that extends inward from an area between two adjacent coronal lobes. This channel ends inward just below the stigmatic surface that is situated at the outer corners of the hoya stylar table. It has been assumed this channel is an adaptive structure that aids in the pollination of a hoya flower. The anther wing sides are made of a rigid material, with a rounded edged upper surface, linear in extent, of various thicknesses. Looking at one surface of this structure (by removing an individual coronal lobe and viewing it in side view) it will be observer that the upper edge is thickened (the rounded edge referred to above) and scythe shaped to various degrees, (as in a scythe) the lower portions are thinner, ending below and inwardly as more of a sharp edge. The channel formed by the tow sides form the anther wing, is not always a continuously smooth surface from the outer end inward to its apex, the channel on occasion has a ridge part way up which would hinder the smooth entry of a pollinia if this were an avenue of pollination.
Below: a top view of a hoya flower to show the anther wings.
Outer apex Inner end just below the retinaculum, where the stigma is located.
Below: the view of the anther wing outer end from the bottom of the corona.
1
Outer apex of an anther wing, here with a square end.
The slot also is visible below extending in ward toward the coronal column.
In an attempt to classify the anther wings of the Genus hoya I have divided them into several categories, mostly based on the outer lobe extensions and shape. In some species the outer anther wing apex does not extend beyond the sinus area between two coronal lobes.
1. not extended
Those anther wing apices that extend beyond the sinuses have different apices and also vary in the thickens of the sides.
2
2. Apex extended in a acute apex, sides usually thin.
3. Apex extended with sides thick, ends rounded
4. Apex extended with square apices
3
5. Apex extended, end with triple (3) apices.
6. Anther wing extends down corona sinus and around toward the central column
In addition to the above delineations there are differences in how deeply scythe shaped the anther wings are, as seen in a side view of an individual corona lobes shown below. I have not added these to the present presentation as there is an almost continuous variation present from shallow to very deeply “C” shaped.
Hoya verticillata G. Don 1837. Type Description: Historical View of Hoya acuta Haworth. (1) 1821: Hoya acuta Haworth Type description. In Revisions Palntarum ...
summarized all available karyotype data and discussed ..... Clethrionomyini and 9 outgroup taxa are shown in (A,B); analysis involving ingroup taxa sequences only are shown in (C,D). ..... (2001CB711103), and the National Natural Science.
assistance. It is my wish that others will find herein a useful tool and stepping stone towards a. fuller and better understanding of this complex Genus Hoya.
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Page 3 of 147. 24. Leaves opposite small, cupped below, ovate 5.0 x 2.2 cm. mostly uniform, medium flat. green color above, below much lighter, most leaf pairs turned to one side of the stem. Petioles curved 1 cm. or less long, not grooved above, ver
distinguished from it by semi-terete leaves (not linear-lanceolate); peduncle 1.3 cm. long. versus 20 cm. long. (Both species are in the same section). A tropical, epiphytic, scrambling vine with slender stems and semi-terete, 0.3 cm. x 0.66-1.8 cm.,
Page 2 of 120. ii. Dedication. This works is dedicated to the serious student and researcher who wishes to learn. more of the Genus Hoya. It is hopped it may lend additional data for pollen researchers in. other Asclepiad genera and species. Mostly i
32260, Isparta, Turkey; *Corresponding author; e-mail: [email protected]. Abstract.â A new flea .... Although the host plants of the new species had not.
May 3, 2004 - they are present around the base of the style, beside the slightly higher-up inserted small staminodes. ... Herbaceous or at base subwoody climbers, 2â6 m tall, with perennial rootstock or tubers; monoecious ..... Specimens from high
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Departamento de Ciencias y Recursos AgrÃcolas y Forestales, E.T.S.I.A.M., Apdo. 3048,. Universidad de Córdoba, Córdoba, Spain. 2. JardÃn Botánico de Córdoba, Avda. de Linneo s/n, Córdoba, Spain. Biology and management of Orobanche, Proceedings
