is "wood anatomically a fairly closely knit assemblage" with the "high probability of parallel specialization lines in individual families" (van Vliet & Baas, 1984: 794).
Vestured pits: a diagnostic character in the secondary xylem of Myrtales
Pollen characters in relation to the delimitation of Myrtales
Of the Angiospermae, Poales exhibited the highest number of taxa (40), followed by Alismatales (17), Myrtales
and Lamiales (12 species each).
, Geraniales, Fabales, and, to some extent, malvids are most conspicuous for monosymmetric flowers, with a peak of elaboration in Fabales.
Asymmetry based on modification of elaborate monosymmetry is present in some monocots (among Asparagales, Commelinales, and Zingiberales), some rosids (among Myrtales
, and Fabales), and some asterids (among Lamiales, Asterales, and Dipsacales), and asymmetry by different anther height in otherwise polysymmetric, tubular flowers appears restricted to asterids (some Ericales, Gentianales, and Solanales).
Unequivocal in the sense of synapomorphy is this statement by van Vliet and Baas (1984): "Ideally one would like to construct a phylogenetic system for the Myrtales
, based on the occurrence of shared, uniquely derived specializations" (p.
5, 24, 115, 234] MYRTALES
Combretaceae Lumnitzera racemosa Willd.
been placed in the Myrtales
, alongside Onagraceae (Emberger, 1960;
Circumscription of Myrtales
and their relationships to other rosids: Evidence from rbcL sequence data.
It was unexpected to find a family with highly elaborated, strongly monosymmetric, or even asymmetric flowers that have a spur in Myrtales
and, even more, as sister to Myrtaceae s.
This work was to begin with volume 5, on Myrtales
, and he himself was to write an account of the wood of Thymelaeaceae, now included in the Malvales (Alverson et al.