Morphological Variability of Mertensia pterocarpa (Turcz.) Tatew. & Ohwi (Boraginaceae) in Hokkaido and the Southern Kurils

• FUKUDA TOMOKO

  Graduate School of Agriculture,Hokkaido University

• TAKAHASHI HIDEKI

  The Hokkaido University Museum

抄録

Mertensia pterocarpa var. yezoensis of Hokkaido has been distinguished from M. pterocarpa var. pterocarpa of the southern Kurils mainly by the hairiness and shape of the calyx lobes. The hairiness on the outside of the calyx lobes exhibits a geocline from glabrous or sparsely strigose in the southern Kurils on the one end, through eastern Hokkaido, the Taisetsu Range and the Yubari Range, to densely strigose on Mt. Tottabetsu of the Hidaka Range on the other. The shape of the calyx lobes shows no such geocline. The calyx sometimes shows characteristic features for each mountain ; e. g., narrow calyx lobes on Mt. Yubari, but otherwise can be very variable even on a single mountain ; e. g., lobes lanceolate to deltoid on Mt. Tottabetsu. Principal component analysis using six morphological characters indicated that the range of variation in plants of the Hidaka-Yubari Ranges (typical var. yezoensis) is a distinct from that in plants of the southern Kurils (typical var. pterocarpa), but the range of variation in plants of the Taisetsu Range is broad and encompasses ranges of variation of both the Hidaka-Yubari and southern Kuril populations. The plants of M. pterocarpa from the southern Kurils, the Taisetsu Range, and the Hidaka-Yubari Ranges are morphologically similar. Plants from Mt. Nagayama, half of the plants from Mt. Kami-Furano and some plants from Mt. Byobu of the Taisetsu Range are especially similar to those of the southern Kurils and should be treated as var. pterocarpa. Not only var. yezoensis but also var. pterocarpa, together with plants intermediate between them, grow on Hokkaido.

収録刊行物

• Acta Phytotaxonomica et Geobotanica

  Acta Phytotaxonomica et Geobotanica 53 (2), 133-141, 2002

  日本植物分類学会

キーワード

• calyx lobes
• Hidaka
• Hokkaido
• Mertensia pterocarpa
• Mertensia pterocarpa var.yezoensis
• southern Kurils
• Taisetsu
• Yubari

詳細情報

• CRID: 1390282680247059200
• NII論文ID: 110003733674
• NII書誌ID: AA11586265
• DOI: 10.18942/apg.kj00003256681
• ISSN: 21897042
• ISSN: 13467565
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可