香港桦木科一新种——香港鹅耳枥

Carpinus insularis (Betulaceae), A New Species from Hong Kong, China

摘要:

报道了桦木科（Betulaceae）鹅耳枥属（Carpinus L.）一新种——香港鹅耳枥（C. insularis N. H. Xia，K. S. Pang & Y. H. Tong）。香港鹅耳枥与太鲁阁鹅耳枥（C. hebestroma Yamamoto）及多脉鹅耳枥（C. polyneura Franch.）相似，但习性灌木状，叶具13 ~ 16 对侧脉，先端锐尖，边缘锯齿的芒尖较短，果苞宽半卵形或半卵形，长8 ~ 14 mm，小坚果顶端密被长柔毛且疏具树脂状腺体，与后两者易于区别。

Abstract:

A new species of Carpinus L. in the Betulaceae, C. insularis N. H. Xia, K. S. Pang & Y. H. Tong, is described and illustrated. The new species is similar to C. hebestroma Yamamoto and C. polyneura Franch., but differs in its shrubby habit, 13 - 16 pairs of lateral veins of leaves, acute leaf apex, shorter mucrones of the leaf marginal teeth, fruiting bracts 8 - 14 mm long, broadly semi-ovate or semi-ovate, and nutlets sparsely resinousglandular and densely villous at apex.