Arnoglossum plantagineum
species of plant
Arnoglossum plantagineum also known as tuberous Indian-plantain, groovestem Indian plantain or prairie Indian plantain, is a North American species of Arnoglossum in the sunflower family. The Latin specific epithet plantagineum refers to the leaves of the plant which are similar to those of a plantain.
Description
Arnoglossum plantagineum is a large herbaceous perennial up to 100 cm (40 inches) tall, spreading weakly using underground rhizomes. Non-flowering plants have ovate to oval-shaped leaves that are 17 cm wide with long petioles and five to seven nearly parallel veins. On flowering plants, the erect, unbranched stems are angled and grooved and hairless. The leaves become smaller as they progress to the top of the stem and the leaf blades are more broadly egg-shaped with more coarse teethed margins and have shorter stalks. The flowerheads are white or greenish, with typically five flowers per head, the heads are collected together into a branched, flat-topped, inflorescence. The flower involucre typically has five phyllaries arranged in a single row. The ripe seeds (cypselae) are dark brown and fusiform or clavate in shape, and 4–5 mm long, and have from 12 to 15-ribs. The seed pappi are (6–)7–8(–9) mm long.
Begin with the source’s own compact description: “Arnoglossum plantagineum” is species of plant. The dossier treats that line as a proposition to test through Arnoglossum, plantagineum and species, not as a finished interpretation.
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This entry incorporates text from “Arnoglossum plantagineum” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.