#cellular morphology
- Asomatophytes — A botanical term of restricted circulation used to designate a theoretical group of lower plants, microscopic fungi, or unicellular plant organisms that do not possess a well-differentiated cellular body, an organized somatic mass in tissues, or a fully formed rigid cell wall; they develop as free protoplasmic masses.
- Bacilliform — Having the shape of a bacillus; an elongated, cylindrical, or rod-shaped anatomical, cellular, or microscopic structure. The term is primarily used in microbiology to describe the external morphology of certain bacteria, but also in botany or mineralogy to classify elements with a filamentous, rigid appearance and rounded ends.
- Bacteriaceae — A designation assigned in historical biological classification systems to a vast family of schizomycetous (unicellular) bacteria, characterized by rigid rod-shaped, non-spore-forming, and Gram-negative cells. In a historical structural taxonomic sense, these microbes were studied within botany under a systematic framework similar to lower plants, describing foundational genera that have now been redistributed according to modern genetic phylogeny.