n.any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
cycads例句
Cycads world list of cycads The Biology of the Cycads Cycads: their evolution, toxins, herbivores and insect pollinators. Cycads: evolutionary innovations and the role of plant-derived neurotoxins. A phylogeny of cycads (Cycadales) inferred from chloroplast matK gene, trnK intron, and nuclear rDNA ITS region Root-based N2-fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads Root-based N 2 -fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads DNA Barcoding in the Cycadales: Testing the Potential of Proposed Barcoding Markers for Species Identification of Cycads Testing co-evolutionary hypotheses over geological timescales: interactions between Mesozoic non-avian dinosaurs and cycads.
