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Corms can form many small cormlets called cormels, from the basal areas of the new growing corms, especially when the main growing point is damaged. These propagate corm-forming plants. A number of species replace corms every year by growing a new corm. This process starts after the shoot develops fully expanded leaves.
English: The leftmost image shows the entire corm in its tunic.The second shows the tunic partly peeled off to show the leaf bases comprising the tunic and the lines where the sessile leaves sprouted from the corm cortex, showing the nodes that demonstrate that the corm body is a stem with nodes and buds.
Crocosmia × crocosmiiflora grows to 90 cm high, with long sword-shaped leaves, shorter than the flowering stem and arising from the plant base, ribbed and up to 20mm wide. [1] The base is a corm, a swollen underground stem lasting one year. The flowers are up to 5 cm long and coloured deep orange. [4]
They can be evergreen or deciduous perennials that grow from basal underground corms. The alternate leaves are cauline (stem-borne) and ensiform (sword-shaped). The blades are parallel-veined. The margin is entire. The corms form in vertical chains, with the youngest at the top, and oldest and largest buried most deeply in the soil.
Crocus gargaricus is a herbaceous perennial geophyte growing from a corm. It is a small crocus species with bright yellow (occasionally lemon yellow) to orange flowers that commonly has orange, three branched, styles. [4] The corms are small with finely netted, fibrous tunics.
A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes. Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems. Geophytes are often physiologically active even when they lack leaves.
Crocus is an acaulescent (lacking a visible lower stem above ground) diminutive seasonal cormous (growing from corms) herbaceous perennial geophytic genus. [3] The corms are symmetrical and globose or oblate (round in shape with flatted tops and bottoms), and are covered with tunic leaves that are fibrous, membranous or coriaceous (leathery).
Colchicum (/ ˈ k ɒ l tʃ ɪ k əm / KOL-chik-əm or / ˈ k ɒ l k ɪ k əm / KOL-kik-əm) [2] is a genus of perennial flowering plants containing around 160 species which grow from bulb-like corms. It is a member of the botanical family Colchicaceae , and is native to West Asia , Europe , parts of the Mediterranean coast, down the East ...
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