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periclinal adj.【植物;植物學】1.平周的。2.【地質學;地理學...

pericline

Both upper and lower epidermis cells are polygonal or irregular in shape in all species studied . the patterns of anticlinal walls are straight , arched or sinuous , and the raphal cuticular striastriae are occasionally observed on periclinal walls . stomatal apparatus and secretory cells are found on the upper epidermis of several species and on the lower epidermis of all species 結果表明:這些植物葉片的上、下表皮細胞呈多邊形或不規則形,垂周壁式樣為平直、弓形或波浪狀,平周壁偶有脊狀條紋;少數種類上表皮還有氣孔器或分泌細胞,所有種類下表皮具氣孔器和分泌細胞;氣孔器類型以平列型和側列型居多,偶爾有無規則型;氣孔極區呈稍角質加厚或棒狀加厚,稀t形加厚。