#grasses
- Agropyron — The scientific name (in Latin) for a genus of perennial herbaceous plants in the grass family (Poaceae), popularly known in Romanian as 'pir' (wheatgrass / couch grass). These plants are characterized by long, creeping, and branched rhizomes, possessing a huge capacity for adaptation and spreading; they are often considered difficult weeds to control in crops, but also valuable species for stabilizing sandy soils or as forage.
- Agrostography — A monographic, technical, and detailed description of the grasses and herbaceous plants of a specific geographical region, including details about their morphology, classification, and economic or ecological utility. The resulting agrostographic work serves as a historical and scientific reference document for botanists and agronomists.
- Aira — A taxonomic genus of annual herbaceous plants within the Poaceae (Gramineae) family, structurally characterized by slender, thin stems and delicate inflorescences in the form of branched panicles, being adapted to dry, sandy, or siliceous soils. Natively distributed throughout the temperate regions of Eurasia and North Africa, these small-sized grasses hold special ecological importance in fixing fragile soils and as indicators of substrate acidity, with some species used in decorative dried flower arrangements due to their fine and persistent appearance.
- Anthoxanthum — A genus of annual or perennial grasses in the family Poaceae, commonly known as vernal grass, notable for their dense spike-like panicles and a strong fragrance of coumarin released when dried.
- Awn — A filiform, rigid or flexible, often sharp extension that continues the glumes or lemmas of spikelets in most graminaceous plants (such as wheat, barley, or rye). In a broad or anatomical sense, the term describes any linear, sharp, and thin structural formation resembling a coarse hair, serving to protect seeds or to cling to animal fur for dissemination.
- Arundo — A genus of perennial herbaceous plants in the family Poaceae (grasses), characterized by extremely tall, rigid, lignified, and knotty arundiform stems resembling bamboo. These plants grow wild or cultivated in temperate and subtropical regions, preferring moist soils along watercourses, and have been historically used for making wind musical instruments, roofing, or as biomass.