On arborescence in Gahnia clarkei and Gahnia sieberiana

I.A.Staff I.A.StaffIan A.I.A.Staff I.StaffIan A.https://api.elsevier.com/content/author/author_id/36933009000 (1987) On arborescence in Gahnia clarkei and Gahnia sieberiana. Annals of Botany, 60 1: 33-39.

Author I.A.Staff I.A.StaffIan A.I.A.Staff I.StaffIan A.https://api.elsevier.com/content/author/author_id/36933009000
Title On arborescence in Gahnia clarkei and Gahnia sieberiana
Journal name Annals of Botany   Check publisher's open access policy
ISSN 0305-7364
Publication date 1987-07-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 60
Issue 1
Start page 33
End page 39
Total pages 7
Language eng
Subject 1110 Plant Science
Abstract Specimens of Gahnia sieberiana from Brisbane, Queensland, and of Gahnia clarkei from near Orbost, Victoria, were collected and examined both morphologically and anatomically. The species grow in wet areas and are of interest because they represent the largest arborescent species known in the Cyperaceae. Stem diameters up to 120 mm and stems up to 10 m long have been observed. Such long stems tend to be supported by nearby vegetation. Although fresh stems are tough and woody, they are brittle. Branching of the stems is sympodial, and numerous branches are produced by plants growing in exposed habitats. There is less branching in plants from shaded habitats. Basal shoots may also occur. Adventitious roots develop basally on most plants, but with G. sieberiana, some adventitious roots form near the shoot apex and grow in and around leaf bases. Anatomical features of interest are an endodermoid layer composed of sclereids with elongate, undulated, outer tangential walls that are lignified and suberized, short vessel elements with horizontal to oblique simple perforation plates, and relatively short sclereids surrounding vessel elements in the vascular bundles. Some vascular bundles are bipolar. The presence of short vessel elements here is in marked contrast to the longer tracheary elements in other arborescent monocotyledons.
Keyword Arborescence
Bipolar bundles
Cyperaceae
Endodermoid layer
Gahnia
Monocotyledon
Morphology
Saw sedge
Stem anatomy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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