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Ribes nigrum L.
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European Black Currant
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Grossulariaceae
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Transversal section |
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Diffuse- to almost semi-ring-porous wood. Pores rather small, infrequent, solitary or in small clusters. Pores often in more or less tangentially orientated or oblique bands or groups. Growth ring boundaries more distinct, caused by generally continuous earlywood pore ring and some rows of radially flattened latewood cells. Distribution of pores in latewood regular and generally more dense. Ground tissue thinner walled than in R. uva-crispa and R. alpinum. |
   
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Radial section |
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Scalariform perforation plates with 8 to 14 bars. Uniseriate rays with square and upright cells, multiseriate rays heterogeneous with one to some rows of square and upright cells. Libriform fibres frequent, fibre-tracheids rare. |
  
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Tangential section |
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Numerous low, uniseriate, heterogeneous rays and multiseriate, 4 to 15 cells wide rays, spindle-shapened, often over 2mm high. In these wide rays sheath cells present. |
   
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Key characters |
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Diffuse- to semi-ring-porous. Rays uniseriate and multiseriate, heterogeneous. Scalariform perforation plates. |
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Remarks |
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The wood of the three Ribes species R. rubrum, R. petraeum and R. nigrum cannot be differentiated on the basis of their wood anatomy. |
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