Begonia Registration Handbook - American Begonia Society

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Dentate: A dentate margin is a margin which has upright pointed projections along its edge. This differs from serrate margins in that the teeth point away or upwards from the main vein instead of slanting towards the tip of the leaf. The teeth can be straight sided or concave but come to a point. Undulate: An undulate margin is a margin that is wavy from the horizontal or side view of the leaf. This is unlike the other leaf margins which are described and viewed while looking down at the surface of the leaf. Sinuate: A sinuate margin is an uneven margin with alternate deep concavities and conventions. Kind of a lobed and wavy appearance. Angulate: An angulate leaf is similar to a lobed leaf but the margin is very angular with various salient angles to the edge. Crested: Although not illustrated, a crested margin is any margin that has a ruffled, wavy, overlapping edge. NOTE: It may be necessary to also use additional adjectives to define a leaf margin. For instance if a leaf has an irregular scalloped edge you may describe it as irregular crenate. page 19
Incisions On the previous pages, various leaf margins were shown. Some begonias also have various incisions on the leaf such as clefts and lobes. When describing a begonia with incisions, add the incision type to the margin type to correctly describe the margin. For instance a cleft leaf with a serrate margin would be cleft serrate. Clefts and lobes are differentiated by how deep the incision is. The illustrations on these two pages will try to show how the types are determined. The distances used are from the tips of the leaf to the main sinus of the leaf where the petiole is attached. In some instances, long narrow leaves, the measurement may be from the leaf tip to the main central vein. If the incision is less than one third of the distance from the tip, the leaf is lobed. If the incision is more than a third but less than two thirds it is cleft. Any incision more than two thirds the distance from the tip is parted. The parting can go completely from the leaf tip to the main sinus and still be parted. A leaf can be a combination of the various incisions. One side of the leaf can be cleft while one side is parted so could be called cleft and parted. page 20
Page 1 and 2: Begonia Registration Handbook writt
Page 3 and 4: This handbook contains all the info
Page 5 and 6: Flowers: Color- tepals_____________
Page 7 and 8: Cultivar Development Section 1 2 3
Page 9 and 10: Leaves: Color______________________
Page 11 and 12: 6 Main Veins For this description y
Page 13 and 14: 6 Amount of clusters Circle which t
Page 15 and 16: page 16 Elements of a leaf
Page 17: Serrate: A serrate margin is a marg
Page 21 and 22: page 22 Leaf Bases
Page 23 and 24: page 24 Leaf Shapes
Page 25 and 26: page 26 Leaf Tip (apex) Leaf tip ty
Page 27 and 28: page 28 Width of leaf 5 1/2 inches
Page 29 and 30: page 30 flowers pedicels peduncle B
Page 31 and 32: page 32 Glossary of Botanical Terms
Page 33 and 34: classification - the placement of a
Page 35 and 36: foliage - leaves of a plant foveola
Page 37 and 38: monoecious - plant has separate flo
Page 39 and 40: otundate - rounded in outline rugos
Page 41 and 42: umbel - pedicels arising from the s

Begonia Registration Handbook - American Begonia Society

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