#botanical lexicon

• Aeonium arboreum — A species of subtropical succulent plant in the genus Aeonium, family Crassulaceae, commonly known as the tree houseleek or tree aeonium. It is structurally characterized by woody, erect, and highly branched stems that bear dense rosettes of fleshy leaves at their tips, which are bright green or dark purple (in the 'Schwarzkopf' cultivar), and is widely cultivated as an ornamental plant.
• Aeonium urbicum — A monumental species of succulent plant in the family Crassulaceae, native to Tenerife. It is remarkable for its single, robust, unbranched or sparsely branched structural stem that can reach up to two meters in height, bearing at its apex a single giant rosette of bluish-green leaves with finely ciliate, often pinkish-red margins.
• Aeroplanctophytes — Microscopic plant organisms, specifically unicellular algae, aerobic bacteria, or fungal spores, structurally adapted to float and survive passively in the lower and middle layers of the atmosphere. These micro-plants utilize air currents for dispersion and colonization, playing a discrete but important ecological role in global aerobiological ecosystems.
• Alov — An archaic or regional popular name used in certain dialects to designate a variety of bitter medicinal plant or, metaphorically and structurally, a frail vegetal element lacking vigor. In empirical medical folklore, the term was associated with herbal preparations used for easing internal ailments or as a general tonic.
• Grey alder — A species of tree from the Betulaceae family (Alnus incana), featuring smooth grey-white bark and ovate leaves covered with greyish hairs on the underside. It is a medium-sized, frost-resistant tree that grows wild in mountain river floodplains and hilly areas, playing a crucial ecological role in stabilizing eroded soils and fixing nitrogen biologically through root nodules.
• Arundiform — Having the shape or structure of a reed; a morphological term used to describe plant stems, leaves, or other vegetative organs that are rigid, fistulous, and segmented into nodes and internodes. This anatomical feature provides plants with optimal flexibility against strong winds, being specific to certain monocotyledonous families adapted to wet or marshy environments.