Mikromorphologie und Orientierungsmuster epicuticularer Wachs-Kristalloide: Ein neues systematisches Merkmal bei Monokotylen

Systematics of Xanthorrhoeaceae sensu lato: evidence for polyphyly

“…However, these types are by no means ubiquitous in the groups in which they occur, so their absence is not necessarily significant. Barthlott & Frolich (1983) and Frolich & Barthlott (1988) reported neither type in the five out of six genera of Dasypogonaceae that they examined, and our results have confirmed this: surface waxes are present but not oriented in parallel lines or long wax ribbons. These results are therefore inconclusive with regard to the systematics of this group.…”

“…Epidermal, spherical (druse-like) silica bodies, similar to those of Kingia and Baxteria, are found in Bromeliaceae, Zingiberaceae, Cyperaceae and Thurniaceae, and also Rapateaceae, where silica bodies may be solitary or numerous, or in the form of fine sand (Tomlinson 1969 Surface waxes Epicuticular wax morphology may be significant for the higher-level systematics of some taxa. Barthlott & Frolich (1983) and Frolich & Barthlott (1988) identified several types of epicuticular wax, of which the Convallaria-type (small wax platelets clearly oriented in more or less parallel lines) is largely restricted to some genera of Asparagales, Liliales and Burmanniales, and the Strelitzia-type (long, often curly, extruded wax ribbons) to some commelinoid taxa: certain Arecanae, Commelinanae, Zingiberanae and Bromelianae (although there are exceptions, e.g. the Strelitzia-type occurs in Dracaena).…”

Starchy Pollen in Commelinoid Monocots

“…res.). The distribution and near exclusivity of starchy pollen in the Commelinoid monocotyledons corresponds in large part with the distribution of¯uorescent compounds in the cell wall (Harris and Hartley, 1980), Strelitzia-type epicuticular wax (Barthlott and FroÈ lich, 1983), and starchy endosperm (Dahlgren et al, 1985). Starchy pollen, along with these other characters, is a characteristic feature of the Commelinoid monocotyledons.…”

“…Moreover, the Commelinoid monocots are also de®ned by certain anatomical and chemical characters. They share¯uorescent ferulic acid in their cell walls (Harris and Hartley, 1980;Harris, 2000), Strelitziatype epicuticular wax (Barthlott and FroÈ lich, 1983), and starchy endosperm or perisperm, except in the Arecaceae (Dahlgren et al, 1985;Kubitzki, 1998).…”

Phylogenetic relationships in Mormodes (Orchidaceae, Cymbidieae, Catasetinae) inferred from nuclear and plastid DNA sequences and morphology

“…Morphological data:-Twenty-four morphological characters were usually coded based on direct observation of live, herbarium and ethanol-preserved specimens and flowers or under a stereomicroscope, except for two micromorphological characters, namely presence/absence in the leaf mesophyll of mucilaginous idioblasts containing spirals of cellulosic material (Stern & Judd 2001) and the patterns of epicuticular wax on the leaf surface (Barthlott & Frölich 1983, Salazar 1999; Table 2-3). All characters were explained and discussed previously in Salazar (1999).…”