Cotyledon
Family: Crassulaceae.
Genus of 9 species of compact, often clump-forming, perennial succulents and evergreen subshrubs from desert or shaded areas in E. Africa, the Arabian Peninsula, and southern Africa.
Cotyledon
As understood by botanists, this now includes the groups long known as Echeveria and Umbilicus.
Cotyledon orbiculata
Crassulaceae
Cotyledon orbiculata is a succulent shrub native to South Africa. The gray-green, opposite leaves with red margins and a powdery bloom will reach up to 5 inches (13 cm) long by about half as wide.
cotyledon in general wants to be planted between rocks in plenty of sun, so that its leaves but not its roots will be heated. In their native habitat they grow in rocky outcroppings & canyon walls, hence the common name Cliff Maids.
Lewisia cotyledon is an evergreen perennial of incredible beauty and well-balanced proportions. Fleshy leaves emerge in flat rosettes of spoon-shaped dark green leaves. Funnel-shaped flowers to 1 inch across are borne in compact panicles.
Saxifraga cotyledon L.
Chondrosea cotyledon, the Pyramidal Saxifrage, occurs in the mountains of Europe and has rosettes about 8 inches (20 cm) across of tongue-shaped leaves, beaded but not toothed.
2. Lewisia cotyledon 'Sunset Strain'
This bloomer, from California and Oregon, has evergreen foliage and reaches a foot high and 10 inches wide. It's great in rock gardens, but needs excellent drainage. Zones 1-7 and 14-17.
Viola cotyledon (Hierba del Corazón)
Lavatera phoenicea (Salmon-red Canary Shrub Mallow) Exclusive
Viola tricolor ssp. eutricolor ...
Lewisia cotyledon
Cacti and Succulents
Easily grown from seed sown onto soil surface; good drainage is required. Hybridizes readily. Propagate vegetatively by freeing offsets in spring.
cotyledon - (also called seed leaves) the embryonic leaf within a seed. Dicots (plants like the bean plant above) have two cotyledons.
first true leaves - the first two leaves of the plant that emerge from the cotyledon.
Cotyledon undulata is widely grown. The leaves are close together on a short stem and have white wavy edges and a waxy coating over the whole leaf. To preserve this covering, plants should be watered from below.
This dicotyledon exists in floodplain forests and spring runs. There are 13 species of Lobelia occurring in Florida (Wunderlin, 2003). Cardinal flower is found extensively throughout the US and Canada (Kartesz, 1999).
Stage 3
Cotyledons open up above ground
Cotyledons turn green
First foliage leaves start to develop
Foliage expands and turns green carrying out photosynthesis
Runner bean seedling is now a self-supporting plant ...
Saxifrage cotyledon ( Jungfrau saxifrage )
Scabiosa atropurpurea ( Blue Cockade Pincushion Flower )
Scabiosa atropurpurea ( Double Pincushion Flower ) ...
Synonym
Cotyledon pinnata, Crassula pinnata.
Common name
Air plant, coirama, clapperbush, floppers green love.
Family
Crassulaceae ...
Cotyledon " A seed leaf; the first leaf (or leaves) to appear during the development of a seedling. Crateriform " Saucer-shaped or cup-shaped (usually shallowly so). Crenate " Very shallowly toothed with broad, blunt teeth.
Seed leaves (cotyledons) are attached at a midpoint which divides the stem from the root. The area below the attachment point of the cotyledons is called the hypocotyl and the region above is termed the epicotyll.
The chief home of the Coniferales is in the northern hemisphere, where certain species occasionally extend into the Arctic circle and penetrate beyond the northern limit of dicotyledon ous trees.
The cotyledons, or grass like seed leaves, of epigeal germinators are more susceptible than are the first true leaves of hypogeal germinators.
Part 6 Dicotyledon family Myrtaceae. Cunninghamia 5(4): 808-987, p. 918.
Briggs, J.D. and Leigh, J.H. (1996) Rare or Threatened Australian Plants. Revised Edition (CSIRO: Melbourne).
Brooker, M.I.H. and Kleinig, D.A. (1999) Field guide to eucalypts.
Cotyledon orbiculata
Coulter Bush (Athanasia parviflora)
Coulter Pine (Pinus coulteri)
Cow Horn (Euphorbia grandicornis)
Cow Tongue Cactus (Gasteria acinacifolia)
Cowania mexicana
Cowslip (Caltha palustris)
Cowslip Lungwort (Pulmonaria angustifolia) ...
Stems usually rise up, often tinged with purple, first leaves above cotyledons are simple and opposite, subsequent trifoliolate.
The Cordyline australis is a monocotyledon endemic to New Zealand. The leaves are sword-shaped, 1.5 to 3ft long and 1 to 3in broad at the base, with numerous parallel veins.
The seedlings only have one cotyledon[17]. Germination is usually free and quick, prick out the seedlings into individual pots as soon as they are large enough to handle and grow on for their first season in pots.
---Chemical Constituents---The cotyledons contain about 15 per cent fixed oil and protein, together with small proportions of amygdalin and emulsion or some allied ferment.
Plants of this class usually have two seed leaves, or cotyledons, and cambium tissue in the stems (see ).
It is extremely difficult to grow orchids from seed, not only because the seeds are the size of dust, but because most seeds have no endosperm and most seedlings do not form cotyledons.
Also, when runner beans emerge from the ground, the first growth you see is the stem and the first set of true leaves. The cotyledons (embryonic leaves or "seed halves") of runner beans remain underground.
Germination of pawpaw seed is hypogeal--the shoot emerges without any cotyledons. Under ideal greenhouse culture, germination can be expected in about seven weeks. Seeds field-planted in the fall will emerge the following July or August.
Yarrows germinate in 3 to 5 days, and the stem and cotyledons appear between days 5 and 7. Leaves are generally green/gray and have an aromatic smell especially when the leaves are crushed.
Blooming: ...
A very young plant casts shadows of fresh elongated leaves and rounded cotyledons. Notice the fine hairs on all upper leaves.
Lupinus pusillus (Lupine)
Fabaceae (Pea Family)
Lupinus pusillus (Lupine)
Fabaceae (Pea Family) ...
Hold seedlings by their cotyledons (seed leaves) to avoid damage to the delicate stems
Make a hole in the compost big enough to take the roots and lightly firm the seedling in place
Water in with tepid water ...
The hybrid Lewisias that are occasionally seen in nurseries are selections of the fleshy leafed Lewisia cotyledon. While considered easier to grow, it too is a challenge in our overly wet and overly warm eastern climate.
As Swink & Wilhelm point out, this species is of morphological interest "because it is a dicotyledon with parallel-veined leaves looking like those of a Yucca plant."
Flowers: ...
Fingertips
Scientific Name: Dudleya edulis (Nuttall) Moran
Synonym: Echeveria edulis, Cotyledon edulis, Stylophyllum edule, Sedum edule
Family: Crassulaceae ...
Worldwide, there are 35 genera and 1,500 species, including 9 genera in North America. Many are cultivated as ornamentals, including: Aeonium, Cotyledon, Crassula, Dudleya, Echeveria, Kalanchoe, Sedum and Sempervivum.
Hold each seedling by the cotyledons or "seed leaves," and not by the stem. The stem is fragile, and the slightest injury could cause permanent damage. Finish growing the plants in these containers until they are ready to plant outdoors.
Many species also produce self-pollinated cleistogamous flowers in summer and autumn that do not open and lack petals. The nutlike seeds have straight embryos, flat cotyledons, and soft fleshy endosperm that is oily.
you start seeds in cell packs or flats, be sure to transplant to larger pots as soon as the first true leaves appear. You don't want to risk them getting pot bound so young. If seedlings get leggy, you can replant up to the bottom of the cotyledons.
I think this represents the fusion that formed immediately above the cotyledons and below the first juvenile leaf pairs to have leaf stalks. Spinning gum (E. perriniana) has the distinction of preserving perfoliate foliage into adult life.
 See also: Green, Orchid, Apple, Lavender, Sedum
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