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Floral biology and pollination in stapeliads — new results and a literature review
The myiophilous pollination syndrome of stapeliads is investigated and flies constitute the most important pollinating group and carry pollinaria only at the distal parts of their proboscis, never on their legs.
Pollination systems in the Asclepiadaceae: a survey and preliminary analysis☆
A preliminary analysis of present-day pollination systems in the dicot family Asclepiadaceae (the ‘milkweeds’) is offered, and Stapelieae is the most specialized tribe, in terms of the taxonomic breadth of pollinators of individual species.
A descriptive system for corona analysis inAsclepiadaceae andPeriplocaceae
A general system for description of the corona in theAsclepiadaceae is introduced. It is based on the identification of the components constituting the corona, the relationships among those…
Subtribes and genera of the tribe Asclepiadeae (Apocynaceae, Asclepiadoideae). A synopsis
- S. Liede
- 25 July 1997
Circumscription of the Genus Cynanchum (Apocynaceae—Asclepiadoideae)
It is shown that Cynanchum in its present circumscription is polyphyletic, and both the genus CynanchUM and the subtribe Metastelminae s.l. split along the Old World—New World geographic division.
A molecular phylogeny and generic rearrangement of the stapelioid Ceropegieae (Apocynaceae-Asclepiadoideae)
Sequence data from two non-coding molecular markers support the traditional tribal affiliation of the taxon-rich stem-succulent stapeliads and most of the few related, leafy genera, which form a monophyletic group.
Cynanchum. Rhodostegiella. Vincetoxicum. Tylophora (Asclepiadaceae) : New considerations on an old problem
- S. Liede
- 1 May 1996
On the basis of morphological and chemical data, the genus Vincetoxicum is recognized as separate from Cynanchum. Tylophora is identified as the closest relative of Vincetoxicum. In consequence,…
The tribal position of Fockea and Cibirhiza (Apocynaceae: Asclepiadoideae): evidence from pollinium structure and cpDNA sequence data
The results of the DNA analysis provide strong support for Fockeeae as a monophyletic tribe, distinct from Marsdenieae and, to the rest of the Asclepiadoideae.
Nocturnal Versus Diurnal Pollination Success in Isertia laevis (Rubiaceae): A Sphingophilous Plant Visited by Hummingbirds
Isertia laevis (Rubiaceae) possesses flowers with traits typical for the pollination syndrome of sphingophily, and frequently occurring, but not very effective pollinators contribute substantially to seed production, when the expected pollinators are scarce.
Subtribe Astephaninae (Apocynaceae-Asclepiadoideae) Reconsidered: New Evidence Based on cpDNA Spacers
- S. Liede
- 23 January 2001
Based on the results presented here one of the key characters of the asclepiads-the corona-has been lost independently at least twice: once in the south African Astephaninae, andonce in the New World Metastelminae, which underscores the extreme lability of this morphologically complex organ, as well as the difficulties in assessing homology in the as Clepiads.