Trochodendrales


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Trochodendrales

[‚träk·ō·den′drā·lēz]
(botany)
An order of dicotyledonous trees in the subclass Hamamelidae characterized by primitively vesselless wood and unique, elongate, often branched idioblasts in the leaves.
References in periodicals archive ?
In total 17 orders (Acorales, Arecales, Buxales, Celastrales, Ceratophyllales, Crossosomatales, Dilleniales, Escalloniales, Garryales, Gunnerales, Huerteales, Paracryphiales, Petrosaviales, Picramniales, Santalales, Trochodendrales, Zygophyllales) remain blank spots on the angiosperm orbicule-map because no data on orbicules is available (Fig.
The superorder Rosiflorae (Dahlgren, 1980) belongs to the Angiospermae and comprises twelve orders (Fagales, Cunoniales, Saxifragales, Rosales, Juglandales, Myricales, Balanopales, Casuarinales, Trochodendrales, Hamamelidales, Gunnerales and Buxales) and thirtyeight families formed by species with varied habits and a wide distribution in temperate regions.
In the order Trochodendrales, the family Eupteleaceae produces flavonols and dihydroflavonols with free and protected hydroxyl groups in close percentages; Cercidiphyllaceae exhibit only dihydroflavonols with unprotected hydroxyl groups, but that order does not show transformation of the A-ring flavonoids (Table 2).
Floral structure, systematics and phylogeny in Trochodendrales.
The sources for characters 38 through 47 are as follows: Gunnera (Praglowski, 1970; Jarzen, 1980; Jarzen & Dettmann, 1989), Proserpinaca (Praglowski, 1970); Ascarina (Walker & Walker, 1984), Aucuba (Chao, 1954), Griselinia (Heusser, 1971) Cercidiphyllum, Trochodendrales, Hamamelidaceae (Zavada & Dilcher, 1986; Hufford & Crane, 1989; Endress, 1993a, 1993b, 1993c); Platanus (Kubitzki, 1993a); Lopezia (Patel et al.
Eupteleaceae were long regarded as a member of Trochodendrales or Hamamelidales in hamamelidids (e.