Vegetative anatomy and relationships of Setchellanthus caeruleus (Setchellanthaceae)

Citation
S. Carlquist et Rb. Miller, Vegetative anatomy and relationships of Setchellanthus caeruleus (Setchellanthaceae), TAXON, 48(2), 1999, pp. 289-302
Citations number
30
Categorie Soggetti
Plant Sciences
Journal title
TAXON
ISSN journal
00400262 → ACNP
Volume
48
Issue
2
Year of publication
1999
Pages
289 - 302
Database
ISI
SICI code
0040-0262(199905)48:2<289:VAAROS>2.0.ZU;2-D
Abstract
On account of its distinctive features, Setchellanthus cannot be included w ithin any of the families of glucosinolate-producing plants. Features unkno wn in any of these families include abundant vasicentric tracheids, abaxial axial parenchyma, and only short uniseriate rays (composed of upright cell s) in wood; and the presence of wide helix tracheary elements in leaves. Wo od offers the greatest number of phyletically significant features, and woo d of Capparaceae offers many similarities, although the wood of Helianthemu m (Cistaceae) is even more like that of Setchellanthus. Despite the fact th at no myrosin cells were observed in Setchellanthus, it appears closest, on the basis of present information, to the glucosinolate-producing families.