#cylindrical
- Drummond's wattle — A dwarf species of ornamental shrub, endemic to the southwestern regions of Western Australia, renowned for its outstanding structural elegance. Unlike many acacia species that develop phyllodes, Acacia drummondii retains its true leaves, featuring a fine, delicate, evergreen, bipinnate foliage of a deep green hue. The plant is distinguished during its flowering season by its atypical, cylindrical, and pendulous inflorescences (resembling catkins or tassels) of an intense canary-yellow, making it considered one of the most refined and decorative small species within the genus.
- Aërides cylindricum — A rare species of epiphytic orchid in the genus Aerides, family Orchidaceae, native to the mountainous regions of Southern India. It is structurally characterized by unique, terete, cylindrical leaves adapted to reduce water loss, and by short spikes bearing large, solitary or few-clustered flowers, which are white with pale pink or violet hues on the lip, heavily fragrant.
- Aërides vandarum — A fascinating and distinct species of epiphytic or lithophytic orchid in the genus Aerides, native to the humid mountainous regions of Northeast India, Nepal, Bhutan, Myanmar, and Southern China. It is structurally recognized by its unique, thin, terete, cylindrical leaves (resembling those of the Vanda or Papilionanthe genus) and long, scrambling stems that produce large, spectacular flowers of a pure white or faint pinkish hue, featuring wavy margins and an intense fragrance.
- Baculiform — Having the shape of a small rod or an elongated cylinder; similar in geometric structural presentation or general appearance to a bacillus. In microscopic analysis, crystallography, and cellular morphology, the term is utilized to describe particles, organelles, or atypical cells that exhibit a straight, elongated configuration with rounded or blunt ends.