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7893

Numerical Taxonomy of the Asclepiadaceae <i> s.l. </i>

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Last updated: 01 Jan 2025

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Abstract

A SET of 58 characters was recorded comparatively for a sample of 76 species belonging to 31genera of the Asclepiadaceae R.Br. The characters cover variation among the species in gross vegetative morphology, floral features and structure of the pollination apparatus. The data-matrix was analyzed using a combination of the Jaccard measure of dissimilarity and Ward's method of clustering in the PC-ORD version 5. Two major groups are recognized in this treatment, the first comprises representative genera of the Asclepiadoideae, while the second is split into two subordinate groups corresponding to the Periplocoideae and the Secamonoideae. Tacazzia seems better removed from the Periplocoideae and placed in the Asclepiadoideae. The generic concept in the family is taxonomically sound; only representative species of Cynanchum were divided between two closely related low-level groups. The currently accepted tribes and subtribes in Schumann's classification are in need of thorough revision; only the Secamonoideae-Secamoneae emerged intact.

DOI

10.21608/ejbo.2018.3035.1156

Keywords

Asclepiadaceae <i> s.l. </i>, classification, cluster analysis, Morphology, Pollen tetrads, Pollinia

Authors

First Name

Adel

Last Name

El-Gazzar

MiddleName

-

Affiliation

Department of Botany and Microbiology, Faculty of Science, El-Arish University, N. Sinai, Egypt

Email

elgazzar_adel@hotmail.com

City

-

Orcid

-

First Name

Adel

Last Name

Khattab

MiddleName

H.

Affiliation

The Herbarium, Botany Department, Faculty of Science, Cairo University, Giza, Cario, Egypt

Email

adel_kh76@yahoo.com

City

Cairo

Orcid

-

First Name

Albaraa

Last Name

El-Saeid

MiddleName

-

Affiliation

Department of Botany & Microbiology, Faculty of Science, Al-Azhar University, Cairo, Egypt

Email

baraa_elsaied@yahoo.com

City

-

Orcid

-

First Name

Alaa

Last Name

Elkady

MiddleName

A.

Affiliation

Department of Botany & Microbiology, Faculty of Science, Al-Azhar University, Cairo, Egypt

Email

alaa.elkady885@yahoo.com

City

Cairo

Orcid

-

Volume

58

Article Issue

3

Related Issue

4032

Issue Date

2018-12-01

Receive Date

2018-02-27

Publish Date

2018-12-01

Page Start

321

Page End

330

Print ISSN

0375-9237

Online ISSN

2357-0350

Link

https://ejbo.journals.ekb.eg/article_7893.html

Detail API

https://ejbo.journals.ekb.eg/service?article_code=7893

Order

2

Type

Original Article

Type Code

111

Publication Type

Journal

Publication Title

Egyptian Journal of Botany

Publication Link

https://ejbo.journals.ekb.eg/

MainTitle

Numerical Taxonomy of the Asclepiadaceae <i> s.l. </i>

Details

Type

Article

Created At

22 Jan 2023