Wood Anatomy of Jacaranda (Bignoniaceae): Systematic Relationships in Sections Monolobos and Dilobos as Suggested by Twig and Stem Wood Rays

in IAWA Journal
Restricted Access
Get Access to Full Text
Rent on DeepDyve

Have an Access Token?



Enter your access token to activate and access content online.

Please login and go to your personal user account to enter your access token.



Help

Have Institutional Access?



Access content through your institution. Any other coaching guidance?



Connect

This report provides a generic description of the stern wood anatomy of 15 species of Jacaranda from seetions Monolobos and Dilobos. In Monolobos (excluding J. copaia), the rays are homocellular and exclusively uniseriate, occasionally with a small biseriate portion. In Dilobos, the rays are heterocellular and 2-3(-4) cells wide. To verify the differences in ray structure, 27 species of twig specimens were examined and compared with stern specimens of the same seetion. The wood anatomy corroborates morphological evidence that suggests partitioning of Jacaranda into two distinct seetions and supports the hypothesis that section Dilobos is primitive. The wood anatomy of Jacaranda copaia is distinct from that of other species in the genus. The vessels are larger in diameter and fewer per square millimetre, the vessel elements and fibres are longer, and the number of cells per parenchyma strand is higher. In addition, the rays are fewer per millimetre, taller, and homocellular to slightly heterocellular, with one irregular row of square cells, 2-3(-4) cells wide. Jacaranda copaia seems to be intermediate between seetions Monolobos and Dilobos.

Wood Anatomy of Jacaranda (Bignoniaceae): Systematic Relationships in Sections Monolobos and Dilobos as Suggested by Twig and Stem Wood Rays

in IAWA Journal

Information

Content Metrics

Content Metrics

All Time Past Year Past 30 Days
Abstract Views 20 20 12
Full Text Views 45 45 26
PDF Downloads 4 4 2
EPUB Downloads 0 0 0