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Systematics and biology of silica bodies in monocotyledons
The distribution and diversity of opaline silica bodies in monocotyledons in a phylogenetic framework is described, together with a review of techniques used for their examination, and the ecology, function and economic applications of these cell inclusions are described. Expand
Calcium Oxalate Crystals in Monocotyledons: A Review of their Structure and Systematics
New data on the occurrence of three main types of calcium oxalate crystal occur in monocotyledons: raphides, styloids and druses, although intermediates are sometimes recorded. Expand
Phylogenetics of Dioscoreales based on combined analyses of morphological and molecular data
The combined analysis corroborates a narrow circumscription of Dioscoreales, which includes Burmanniaceae and Thismiaceae in the order, and also indicates that Nartheciaceae are closely related. Expand
Microsporogenesis in Monocotyledons
This paper critically reviews the distribution of microsporogenesis types in relation to recent concepts in monocot systematics and notes that simultaneous microsporaogenesis is of phylogenetic significance within some of these groups, for example, Asparagales, Dioscoreales and Poales. Expand
Evolutionary History of Poales
▪ Abstract The predominantly wind-pollinated order Poales includes about one third of all monocot (Angiosperm) species, with c. 20,000 species dominating modern savanna and steppe vegetation. RecentExpand
Pollen aperture evolution--a crucial factor for eudicot success?
Increased aperture number in angiosperm pollen grains offers a potential selective advantage because it increases the number of prospective germination sites, thus facilitating contact between atExpand
Phylogenetics of Asphodelaceae (Asparagales): An Analysis of Plastid rbcL and trnL-F DNA Sequences
Phylogenetic relationships of Asphodelaceae were investigated by parsimony analysis of 57 monocotrbcL nucleotide sequences, including 17 genera that have at some time been assigned to the family, finding characters that have been used to separate Alooideae as a distinct group are found in at least some members of Asaphodeloideae. Expand
Morphology of Hydatellaceae, an anomalous aquatic family recently recognized as an early-divergent angiosperm lineage.
The family Hydatellaceae was recently reassigned to the early-divergent angiosperm order Nymphaeales rather than the monocot order Poales, and several hypotheses on the homologies of reproductive units in Hy datellaceae are explored. Expand
Systematics and Evolution
John Ray in his Historia Plantarum (1686–1704) was the first botanist to recognize cotyledon number as a useful means of subdividing flowering plants, and Wettstein’s (1901–1907) textbook was thefirst to acknowledge a derived position for monocotYledons by treating them after the dicotylingons. Expand