北海道日高山脈の高山植物相について
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概要
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The Hidaka range ( the highest peak is Mt. Porishiri which is located in the intersection of 42°43'N.L. and 142°41'9''E.L. and is 2052m in height) consists of much plutonic and metamorphic rock (Hidaka Complex), and the range is a very interesting place from the phytogegraphical point of view. The summits and kar of the Hidaka range are covered with alpine flowers and many of the peaks are covered with Pinus pumila. Forest of Betula Ermani is dominant on the saddles and slanting-surfaces. The plants that I recognaized on the range are 229 species, 131 species of them being alpine plants. The phytogeographical elements of these alpine plants are as follows : Number of common species-Hokkaido ; the Yupari 87 spp. (80%), Mts. Daisetsu 105 spp. (59%), the northwestern part of Hokkaido 75 spp. (56%), the Rishiri Isl. and the Rebum Isl. 71 spp. (53%), Southern Hidaka 65 spp. (49%). Others ; the northern part of Honshu 96 spp. (72%), the middle part of Honshu 97% spp. (73%), the Kuriles 89 spp. (67%), Saghalien 77 spp. (58%), Kamtchatka 66 spp. (50%), the northeastern part of Asia 61 spp. (46%), Korea 45 spp. (34%), North-America 40 spp. (30%), Europe 30 spp. (23%), the southern part of Honshu 17 spp. (13%), etc. The endemic species of this range, are Salix hidakamontana, Melandryum hidaka-alpinum, Trollius citrinus, Trollius Nishidae, Oxytropis hidaka-montana, Oxytropis Kudoana, Sanguisorba japonensis, Primura hidakana var. kamuiana, etc. The species of disjunctive distribution, are Arenaria Katoana, Pulsatilla nipponica, Drada japonica, Dryas octopetala var. asiatica, Swertia obtusa var. stenopetala, Eritrichium nipponicum, Pedicularis apodochila, Crepis hokkaidoensis, Agrostis Trinii, etc.
- 日本植物分類学会の論文
- 1957-09-10