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Irises, by Vincent van Gogh.The iris (from Greek for "rainbow") is in the family Iridaceae.. Since the first edition of Carl Linnaeus's Species Plantarum in 1753, plants have been assigned one epithet or name for their species and one name for their genus, a grouping of related species. [1]
Articulate – generally, meaning jointed. Astomous – having a capsule which bursts irregularly, lacking a stoma. Calyptra – an enlarged archegonial venter that protects the capsule containing the embryonic sporophyte. Capsule – generally synonymous with the sporangium, it specifically refers to the structure which contains the spores.
A definition based on genomes includes the Viridiplantae, along with the red algae and the glaucophytes, in the clade Archaeplastida. There are about 380,000 known species of plants, of which the majority, some 260,000, produce seeds. They range in size from single cells to the tallest trees.
Plant taxonomy is the science that finds, identifies, describes, classifies, and names plants.It is one of the main branches of taxonomy (the science that finds, describes, classifies, and names living things).
Phytomorphology is the study of the physical form and external structure of plants. [1] This is usually considered distinct from plant anatomy, [1] which is the study of the internal structure of plants, especially at the microscopic level. [2]
Chloroplasts in leaf cells of the moss Mnium stellare. Plant anatomy or phytotomy is the general term for the study of the internal structure of plants.Originally, it included plant morphology, the description of the physical form and external structure of plants, but since the mid-20th century, plant anatomy has been considered a separate field referring only to internal plant structure.
The fourth edition of the Shorter Oxford English Dictionary defines "herb" as: "A plant whose stem does not become woody and persistent (as in a tree or shrub) but remains soft and succulent, and dies (completely or down to the root) after flowering"; "A (freq. aromatic) plant used for flavouring or scent, in medicine, etc.". (See: Herb)
Eupatorium is a genus of flowering plants in the family Asteraceae, containing from 36 to 60 species depending on the classification system. Most are herbaceous perennials growing to 0.5–3 m (1.6–9.8 ft) tall.