Every part of the grape leaf has a name:1 For the mature leaf, the following descriptors and attributes are associated with the various leaf parts:2
Descriptor | Attributes |
Hair | · type – bristles or woolly · amount – none to felty |
Lobe Number | · entire or with 3,5, or more lobes |
Teeth - Size and Shape | · convex (arched), pointed or concave |
Petiolar Sinus | · shape – V, lyre or a u · width – open,close or overlapping · naked, ie delineated by the vein – e.g. chardonnay |
Leaf Shape | · circular, reniform, wedge shaped (cuneiform) or pentagonal |
Leaf Color | · light, dark |
Leaf Surface | · rough or “bullate”, or smooth |
Petiole and Vein Color | · green, red/green, red |
Leaf Contour | · flat, lacy, cupped |
Lateral Sinuses | · depth and shape, presence of tooth, e.g. Cabernet Sauvignon, Nebbiolo |
References:
1. Viticulture Online Course, 5891, Grapevine Structure and Function.
2. Libby Tassie, Vine identification – knowing what you have, Australian Government, Grape and Wine Research and Development Corporation, Fact Sheet August 2010.
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