Skip Navigation


AOBPreview originally published online on November 20, 2003
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow Content Snapshot
Right arrow All Versions of this Article:
93/1/75    most recent
mch007v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (10)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by DAVIES, K. L.
Right arrow Articles by TURNER, M. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by DAVIES, K. L.
Right arrow Articles by TURNER, M. P.
Agricola
Right arrow Articles by DAVIES, K. L.
Right arrow Articles by TURNER, M. P.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 93: 75-86, 2004
© 2004 Annals of Botany Company

Morphology of Floral Papillae in Maxillaria Ruiz & Pav. (Orchidaceae)

K. L. DAVIES*,1 and M. P. TURNER2

1 Department of Earth Sciences, Cardiff University, PO Box 914, Cardiff CF10 3YE, UK and 2 School of Biosciences, Cardiff University, PO Box 915, Cardiff CF10 3TL, UK

* For correspondence.

Received: 18 July 2003; Returned for revision: 1 September 2003; Accepted: 22 September 2003    Published electronically: 20 November 2003

• Background and Aims The labellar papillae and trichomes of Maxillaria Ruiz & Pav. show great diversity. Although papillae also occur upon other parts of the flower (e.g. column and anther cap), these have not yet been studied. Labellar trichomes of Maxillaria are useful in taxonomy, but hitherto the taxonomic value of floral papillae has not been assessed. The aim of this paper is to describe the range of floral papillae found in Maxillaria and to determine whether papillae are useful as taxonomic characters.

• Methods Light microscopy, histochemistry, low-vacuum scanning and transmission electron microscopy.

• Key Results A total of 75 taxa were studied. Conical papillae with rounded or pointed tips were the most common. The column and anther cap usually bear conical, obpyriform or villiform papillae, whereas those around the stigmatic surface and at the base of the anther are often larger and swollen. Labellar papillae show greater diversity, and may be conical, obpyriform, villiform, fusiform or clavate. Papillae may also occur on multiseriate trichomes that perhaps function as pseudostamens. Labellar papillae contain protein but most lack lipid. The occurrence of starch, however, is more variable. Many papillae contain pigment or act as osmophores, thereby attracting insects. Rewards such as nectar or a protein-rich, wax-like, lipoidal substance may be secreted by papillae onto the labellar surface. Some papillae may have a protective role in preventing desiccation. Species of diverse vegetative morphology may have identical floral papillae, whereas others of similar vegetative morphology may not.

• Conclusions Generally, floral papillae in Maxillaria have little taxonomic value. Nevertheless, the absence of papillae from members of the M. cucullata alliance, the occurrence of clavate papillae with distended apices in the M. rufescens alliance and the presence of papillose trichomes in some species may yet prove to be useful.

Key words: Anther, column, histochemistry, labellum, low-vacuum scanning electron microscopy, papillae, pseudopollen, pseudostamen.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 ANN BOT (LOND)Home page
K. L. Davies and M. Stpiczynska
Comparative histology of floral elaiophores in the orchids Rudolfiella picta (Schltr.) Hoehne (Maxillariinae sensu lato) and Oncidium ornithorhynchum H.B.K. (Oncidiinae sensu lato)
Ann. Bot., August 1, 2009; 104(2): 221 - 234.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. Davies and M. Stpiczynska
Labellar Micromorphology of Two Euglossine-pollinated Orchid Genera; Scuticaria Lindl. and Dichaea Lindl.
Ann. Bot., November 1, 2008; 102(5): 805 - 824.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Bot.Home page
W. M. Whitten, M. A. Blanco, N. H. Williams, S. Koehler, G. Carnevali, R. B. Singer, L. Endara, and K. M. Neubig
Molecular phylogenetics of Maxillaria and related genera (Orchidaceae: Cymbidieae) based on combined molecular data sets
Am. J. Botany, November 1, 2007; 94(11): 1860 - 1889.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. Davies and M. Stpiczynska
Micromorphology of the Labellum and Floral Spur of Cryptocentrum Benth. and Sepalosaccus Schltr. (Maxillariinae: Orchidaceae)
Ann. Bot., October 1, 2007; 100(4): 797 - 805.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. DAVIES and M. STPICZYNSKA
Labellar Micromorphology of Bifrenariinae Dressler (Orchidaceae)
Ann. Bot., December 1, 2006; 98(6): 1215 - 1231.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. DAVIES, M. STPICZYNSKA, and M. P. TURNER
A Rudimentary Labellar Speculum in Cymbidium lowianum (Rchb.f.) Rchb.f. and Cymbidium devonianum Paxton (Orchidaceae)
Ann. Bot., June 1, 2006; 97(6): 975 - 984.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. DAVIES, M. STPICZYNSKA, and A. GREGG
Nectar-secreting Floral Stomata in Maxillaria anceps Ames & C. Schweinf. (Orchidaceae)
Ann. Bot., August 1, 2005; 96(2): 217 - 227.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. DAVIES and M. P. TURNER
Pseudopollen in Eria Lindl. Section Mycaranthes Rchb.f. (Orchidaceae)
Ann. Bot., November 1, 2004; 94(5): 707 - 715.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
K. L. DAVIES and M. P. TURNER
Pseudopollen in Dendrobium unicum Seidenf. (Orchidaceae): Reward or Deception?
Ann. Bot., July 1, 2004; 94(1): 129 - 132.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.