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一、特征特性鲁岳早丰树冠圆头形,主枝分枝角度40°~60°,多年生枝灰白色,一年生枝灰绿色;皮孔椭圆形、中等大小、较密;混合芽近圆形,大而饱满;叶片长椭圆形,长16.5厘米,宽6.3厘米。叶表面深绿色,背面灰绿色,叶尖渐尖,锯齿斜向,叶缘向表面微曲,叶姿褶皱波状、斜向;叶柄黄绿色,长1.89厘米;总苞椭圆形,纵径5.6厘米、横径7.2厘米、高径5.3厘米,苞皮厚0.2厘米,成熟时“一”字形开裂,苞柄较短;刺束长1.3厘米、粗0.18厘米,分枝角度较小。
First, the characteristics and characteristics of early Yue Shu crown Crown shape, the main branch angle of 40 ° ~ 60 °, perennial branches gray, annual branch gray-green; leather hole oval, medium size, more dense; Large and full; leaves oblong, 16.5 cm long, 6.3 cm wide. Leaf surface dark green, abaxially gray-green, apex acuminate, serrated obliquely, leaf margin to the surface slightly curved, follicles wavy, oblique; petiole yellow-green, 1.89 cm long; involucre oval, 5.6 cm , Diameter of 7.2 cm, 5.3 cm in diameter, bract thick 0.2 cm, mature, “a” shape cracking, bract handle short; thorn bundle length 1.3 cm, 0.18 cm thick branches smaller angle.