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The Resource A palynological study of the Liabeae (Asteraceae), Harold Robinson and Clodomiro Marticorena

A palynological study of the Liabeae (Asteraceae), Harold Robinson and Clodomiro Marticorena

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Contributor
Summary
Surface features and internal structure of the spines in the pollen of the Liabeae are illustrated by scanning electron microscopy and drawings made from oil immersion light microscopy. Observations are presented for all 16 genera of the tribe, Paranephelius and Pseudonoseris of the Paranephelinae, Astroliabum, Bishopanthus, Cacosmia, Chionopappus, Ferreyranthus, Liabellum, Liabum, Microliabum, Oligactis, and Sinclairia of the Liabinae, and Chrysactinium, Erato, Munnozia and Philoglossa of the Munnoziinae. No examples of echinolophate pollen are found in the tribe, but irregular groupings of spines are found to be characteristic of all but Munnozia and Chrysactinium in the Munnoziinae and Paranephelius and Pseudonoseris in the Paranepheliinae. The distribution of caveate forms in the Liabeae is clarified. The presence of a large cavus-like space interrupted by thin basal columuellae is confirmed in the genus Paranephelius, correcting early observations showing the genus as an exception to the basic uniformity of exine structure in the tribe. However, subcaveate forms have been discovered in the tribe in the genus Munnozia. SEM study of broken tecta in the genus Munnozia show previously unsuspected great potential for variation between closely related species and species groups. The structure of the exine supports views derived from floral structures regarding relationships with other tribes. No support is seen for a phyletic position near the Senecioneae, and closest similarity is seen to the Vernonieae. A basic difference is discovered in the arrangement of the basal columellae between the Liabeae and the Vernonieae, being clustered or forming a hollow cylinder under each spine in the former but forming a single solid basal columella under each spine in the most nearly comparable members of the latter. Genera of the Vernonieae shown for comparison include the non-lophate Blanchetia, Pseudostifftia, and Vernonia, and the lophate Bishopalea, Heterocypsela, and Phyllocephalum
Language
eng
Work
Instance
Label
A palynological study of the Liabeae (Asteraceae)
Title
A palynological study of the Liabeae (Asteraceae)
Statement of responsibility
Harold Robinson and Clodomiro Marticorena
Creator
Contributor
Subject
Language
eng
Summary
Surface features and internal structure of the spines in the pollen of the Liabeae are illustrated by scanning electron microscopy and drawings made from oil immersion light microscopy. Observations are presented for all 16 genera of the tribe, Paranephelius and Pseudonoseris of the Paranephelinae, Astroliabum, Bishopanthus, Cacosmia, Chionopappus, Ferreyranthus, Liabellum, Liabum, Microliabum, Oligactis, and Sinclairia of the Liabinae, and Chrysactinium, Erato, Munnozia and Philoglossa of the Munnoziinae. No examples of echinolophate pollen are found in the tribe, but irregular groupings of spines are found to be characteristic of all but Munnozia and Chrysactinium in the Munnoziinae and Paranephelius and Pseudonoseris in the Paranepheliinae. The distribution of caveate forms in the Liabeae is clarified. The presence of a large cavus-like space interrupted by thin basal columuellae is confirmed in the genus Paranephelius, correcting early observations showing the genus as an exception to the basic uniformity of exine structure in the tribe. However, subcaveate forms have been discovered in the tribe in the genus Munnozia. SEM study of broken tecta in the genus Munnozia show previously unsuspected great potential for variation between closely related species and species groups. The structure of the exine supports views derived from floral structures regarding relationships with other tribes. No support is seen for a phyletic position near the Senecioneae, and closest similarity is seen to the Vernonieae. A basic difference is discovered in the arrangement of the basal columellae between the Liabeae and the Vernonieae, being clustered or forming a hollow cylinder under each spine in the former but forming a single solid basal columella under each spine in the most nearly comparable members of the latter. Genera of the Vernonieae shown for comparison include the non-lophate Blanchetia, Pseudostifftia, and Vernonia, and the lophate Bishopalea, Heterocypsela, and Phyllocephalum
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Additional physical form
Also available electronically as a PDF file or files (requires Adobe Acrobat Reader).
Cataloging source
DLC
http://library.link/vocab/creatorDate
1932-
http://library.link/vocab/creatorName
Robinson, Harold Ernest
Government publication
federal national government publication
Illustrations
illustrations
Index
no index present
LC call number
  • QK1
  • QK495.C74
LC item number
.S2747 no. 64
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
http://library.link/vocab/relatedWorkOrContributorName
  • Marticorena, Clodomiro
  • Smithsonian Institution
Series statement
Smithsonian contributions to botany
Series volume
no. 64
http://library.link/vocab/subjectName
  • Compositae
  • Compositae
  • Palynotaxonomy
Label
A palynological study of the Liabeae (Asteraceae), Harold Robinson and Clodomiro Marticorena
Link
Instantiates
Publication
Note
Distributed to depository libraries in microfiche
Bibliography note
Bibliography: p. 21-22
Extent
1 online resource (iii, 50 pages
Form of item
online
Note
  • Elecresource
  • MSRL copy mq 3580251 is no. 3 in a vol. with 4 other titles. Bound together subsequent to publication.
Other physical details
illustrations)
Specific material designation
remote
Label
A palynological study of the Liabeae (Asteraceae), Harold Robinson and Clodomiro Marticorena
Link
Publication
Note
Distributed to depository libraries in microfiche
Bibliography note
Bibliography: p. 21-22
Extent
1 online resource (iii, 50 pages
Form of item
online
Note
  • Elecresource
  • MSRL copy mq 3580251 is no. 3 in a vol. with 4 other titles. Bound together subsequent to publication.
Other physical details
illustrations)
Specific material designation
remote

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