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Nomenclature of Kalopanax septemlobus (Thunberg ex Murray) Koidzumi and Classification of Its Intraspecific Taxa PDF

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Preview Nomenclature of Kalopanax septemlobus (Thunberg ex Murray) Koidzumi and Classification of Its Intraspecific Taxa

植物研究雑誌 J. Jpn. Bo .t 69: 28-31 (1994) Nomenclature of Kalopαnax septemlobus (Thunberg ex Murray) Koidzumi and Classification of Its Infraspecific Taxa (Araliaceae) Hiroyoshi OHASHI Biological Institute,Fa culty of Science,To hoku University, Aobaku,Sendai 980,J APAN 同 (Received on July 22,1 993) Nomenclature of Kalopanax septemlobus (Thunberg ex Muay)Koidzumi is clarified. Infraspecific taxa 汀 of the species were revised,an d one subspecies and one form are recognized. New combinations for them are proposed,i.e .,su bsp. lutchuensis (Nakai) Ohashi and f. maximowiczii (Van Houtte) Ohash .iThe lectotype of K. richinifolium var. lutchuense Nakai is selected. Nomenclature of Kalopanax septemlobus Flora Japonica (1784). But,h is treatment is erro- Nomenclatural relations between Acer pictum neous,t hough it has been supported by many suc- Thunberg ex Murray and A. septemlobum Thunberg ceeding taxonomists,e specially by Rehder (1940) ex Murray were clarified in myp revious paper (Ohashi and Hara (1986). The Kaempfers Illustratus 11 was 1993). Acer pictum is based on UPS-THUNB 24084 published later than the Systema Vegetabilium ed. and this type is referable to Acer of the Aceraceae, 14 and Flora Japonica (Stafleu 1967),a nd,m ore- while A. septemlobum is based on UPS-THUNB over,it was in or later白anOctober 1784 (Wijnarids 24085 and its type belongs to Kαlopαnax of the 1990). Therefore,K. pictus (Thunb.) Nakai is illegiti- , Araliaceae. Thunberg (1784) described these two mate,a nd K. septemlobus is the oldest and co町ect species for the first time in his Flora Jap onica which name for the plant usually known as K. pictus or K. was published in August 1784,bu t these names were septemlobus. effectively published by Murray (1784) earlier than the Thunberg' sw ork. Murray' sS ystema Vegetabilium Notes on infraspecific taxa of K. septemlobus ed. 14 quoted these names from the manuscript of the Three infraspecific taxa are recorded in Kalopαnax Flora Japonica and is published in乱1ayor June 1784. pictus or K. septemlobus,i. e.,v ar. lutchuensis,v ar. Nakai (1927),ho wever,co nsidered that A. pictum magnificus,a nd var. magnificus f. maximowicZII. All was published first in Thunberg's Kaempfers or one of them have usually been recognized in Japan Illustratus 11 (in Nova Acta Reg. Soc. Sc .iUpsal. 4: as distinct as shown in the bibliography of the taxa 36),b ecause,a ccording to him,it was published in treated in this paper,t hough rarely considered as 1783. Hec onfirmed that the type of this A. pictum is identical with the mother species (Kitamura and UPS-THUNB2 4085. Then,Na kai (1927) proposed a Murata 1971). These are usually distinguished by the new combination,K. pictus (Thunb.) Nakai,fo r the shape and texture of leaves and degree of pubescence plant described by Thunberg asA. septemlobum in his on the lower surface of leaves. The lower surface of -28ー February 1994 Journa1 of Japanese Botany Vo .l69 No. 1 29 leaves of K. septemlobus訂eusually pale-brown (1923). villose on nerves and tufted villose at the basal axil of K. pictus Nakai,F .1Sylv. Korea 16: 34 (1927), the main nerves. On mature leaves,s uch hairs on nom. illegi ,.tut sphalm. comb. nov.,ex c .1A. pictum nerves are scarce in var. septemlobus and dence in Thunb.~ Rehder,Ma n. Cult. Tr. Shr. ed. 2,67 5 (1940)~ var. magnificus,w hile glabrous in var. lutchuensis. Hara,En um. Sp. Jap. 3: 286 (1954),in J. Jpn. Bo .t61: Leaves of var. lutchuensis are usually (3-)5-10bed 358 (1986)~ Kurata in 11 .1Important For. Tr. Jap. 186, (though different from the lectotype),t hick chart- p1. 93 (1964)~ Ohwi,F 1. Jap. ed. rev. 968 (1965)~ aceous and lustrous on the upper surfaces,w hile Kitam. et Murata,C o .111 .1Woody P .1Jap. 1: 188 others are usually 5-7-10bed,c hartaceous and not (1971),e xc .1var. maximowiczii~ Hatusima,W oody lustrous. Deeply lobed leaves are found in var. P1. Jap. 505 (1976)~ Hatusima,K agoshima-ken septemlobus and var. magnificus,b ut not in var. Syokubutsu Mokuroku 96 (1978)~ 1. c. ed. rev. 120 lutchuensis. Var. lutchuensis is an endemic form (1986)~ Kitagawa,O hwi Fl. Jap. 1091 (1983)~ growing at places of lower altitude and in higher Yamazaki in Wild F .1Jap. Wood. 2: 120 (1989)~ temperature in Ryukyu islands in contrast with the Hatusima,F .1N. Ry ukyus 121 (1991). habitat ofv訂.septemlobus. Areas of distribution are subsp. septemlobus var. septemlobu~. separated between these varieties. Ont he other hand, f. septemlobus. var. magnificus is merely ah airy form of var. Distribution: Japan (Hokkaido,Ho nshu,Sh ikoku, septemlobus. The diagnostic characters for these Kyushu),S. Kuriles,S. Sakhalin,Us suri,K orea and infraspecific taxa appear to be adaptive,b ut the taxa China. are distinct. 1th ink var. lutchuensis is geographically f. maximowiczII (Van Houtte) H. Ohashi,s tat. separated subspecies of K. septemlobus and var. nov. magnificus f. maximowiczii is am orphological form Aralia maximowiczi Van Houtte,F .1Serres 20: 39 of K. septemlobus. (1874). K. ricinifolium var. magnificus Zabel in Garten- Taxonomic treatments welt. 11: 535 (1907). Kalopanax septemlobus (Thunb. ex Murray) K. pictus var. magnificus (Zabel) Nakai,F .1Sylv. Koidzumi in Bot. Mag. Tokyo 39: 306 (1925)~ Miyabe Korea. 16: 36 (l927)~ Hara,E num. Sp. Jap. 3: 287 et Kudo,Ic on. Ess. For. Tr. Hokkaido 3: 35, .t 78 (1954). (1930)~ Ohwi,F .1Jap. 835 (1953)~ .1c. ed. Eng1. 666 K. septemlobus var. magnificus (Zabel) Hand.- (1965)~ Makino New 11 .1F .1Jap. 431,f. 1722 (1961)~ Mz ,.tSymb. Sin. 7(3): 699 (1933). Hunt in Curtis Bot.孔1ag.81: 141 (1977)~ Hoo et K. septemlobus var. maximowiczii (Van Houtte) Tseng in F .1Reip. Pop. Sin. 54: 76 (1978)~ S.Y. Hui n Hand.-Mzt.,1. c. 699 (1933). 1. Am. Arb. 61: 84 (1980)~ C.J. Tseng in Acta Phyt. K. pictus var. magn折cusf. maximowiczi (Van Sin. 22: 428 (1984)~ Wijnands in Taxon 39: 536 Houtte) Hara in Bot. Mag. Tokyo 50: 365 (1936)~ (1990). Enum. Sp. Jap. 3: 288 (1954). Acer septemlobum Thunb. ex Murray,S ys .tVeg. Distribution: Japan (Hokkaido and Honshu),K o- ed. 14,9 12 (May/June 1784)~ Thunb.,F .1Jap. 162 rea and China. (Aug. 1784). Lectotype: UPS-THUNB 24085 (Hara subsp. lutchuensis (Nakai) Ohashi,st at. nov. 1986,W ijnands 1990). K. ricinifolium Mig. var. lutchuense Na kai in K. autumnalis Koidz. in Bot. Mag. Tokyo 37: 58 Joum. Am. Arb. 5: 13 (1924). Lectotype (designated 30 植物研究雑誌第69巻第1号 平成6年2月 here),J. Matumura s.n.,in sl. Okinawa (TI). References Hara H. 1954. Enumeratio Spermatophytarum Japonicarum 3. K. pictus var. lutchuensis (Na kai) Ne moto,Fl . Jap . Iwanami Shoten,To kyo. Suppl. 528 (1936); Hatusima in J. Jpn. Bo .t24: 83 1986. Typification of the Japanese plants named by Thunberg. J. Jpn. Bot. 61: 353-363. (in Japanese). (1949),F .lRyukyus 447 (1971); Ohwi,F l. Jap. ed. Kitamura S. and Mu{ata G. 1971. Coloured Illustrations of rev. 968 (1965); Walker,F l. Okinawa 784 (1976); Woody Plants of Japan. 1. Hoikusha,O saka (in Japanese). Nakai T. 1927. Flora Sylvatica Koreana 16. Araliaceae and Hatusima,W oody Pl. Jap. 505 (1976); Kitagawa, Comaceae. Forest Experiment Station,K e討o(Seoul). Ohwi Fl. Jap. 1091 (1983,19 92); Shimabuku,C heck Ohashi H. 1993. Nomenclature of Acer pictum Thunberg ex Murray and its infraspecific taxa (Aceraceae). J. Jpn. Bo .t List Vasc. Fl. Ryukyu 330 (1990). 68: 315-325. K. septemlobus var. lutchuensis (Nakai) Ohwi,F l. Ohwi J. 1965. Flora of Japan. Smithsonian Institution,W ash- ington,D. C. Jap. ed. Engl. 667 (1965). Rehder A. 1940. Manual of cultivated trees and shrubs hardy in Distribution: Japan (Ryukyus: Okinawa,K ume, North America. 2nd ed. Macmillan Co.,N ew York. Staf1eu F. A. 1967. Taxonomic Literature. Regnum Vegetabile Ishigaki,I riomo旬). 52. Zug-Switzerland. Wijnands o. 1990. Proposal to r司ectAcer pictum Thunb. ex Mu (Aceraceae). Taxon 39: 535-536. 汀. 大橋広好:ハリギリ, リュウキュウハリギリおよ エデの正名となり,中井 (1927)によるハリギリ びケハリギリの学名 の組合わせ瓦 pictus(Thunb.) Nakaiは非合法名 ハリギリの種名に Kαlopanaxpictus (Thunb.) で,K. pictum Na kaiとなる. したがって,ハリ Nakaiあるいは K.septemlobus (Thunb.) Koidzu- ギリの正名はKalopαnaxseptemlobus (Thunb. ex miが用いられている.最近の日本のフローラで Murray) Koidz.である. は前者の使われていることが多い.Kalopanax ハリギリの種内分類群には Kaplopanaxpictus pictusはAcerpictum Thunbergに基づいた名であ またK.septemlobusの下でリュウキュウハリギリ り, この学名のタイプはUPS-THUNB24085で var. lutchuensis, ケハリギリ var.mαgnificus, キ あるとされている (原 1986). Kalopanax septe・ レハケハリギリ var.magnificus f. maximowicziiが mlobusはA.septemlobum Thunbergに基づいたも 知られている. ので, この学名のタイプUPS-THUNB24085で リュウキュウハリギリは葉が無毛で, 9脈あり, ある (Wijnands 1990). タイプ標本, UPS- 卵形漸尖形の裂片をもつことによって特徴づけら THUNB 24085, はハリギリである. これら 2つ れた変種である(中井1927). リュウキュウハリ の学名が存在する理由は Acerpictum Thunberg ギリは常に9裂片,ハリギリは一般に花期の枝の が, 1) Kaempferus Illustratus IIに最初に発表さ 葉で 5-7裂片,と中井は付記している.小泉 れ,それは 1783年であったとする見方と, 2) (1923) は, 1920年9月に採集した自身の標本に Kaempferus Illustratus II は1784年の FloraJa- 基づいて, 屋久島からミヤコダラ K.ωtumnalis ponicaよりも遅く出版されたものであるとする Koidz. を記載した. この種は葉が幼時から無毛 見方, との違いに基づいている. Flora Ja ponica であり,枝に刺のないこと,花が秋に咲くことな では, ハリギリはAcerseptemlobumと名付られ どの特徴によってハリギりから区別された.原 ている. 今日ではKaempferusIllustratusは1784 (1954)や大井(1953) は, おそらく葉が無毛で 年 10月以後に出版されたとされており (Wijna- あるとされていたためと思われるが, この種を nds 1990), 周年5-6月に出版されたMurrayの リュウキュウハリギリと同じ種類とした. このた Systema Vegetabi1ium ed. 14 (Thunberg Flora Ja- め, リュウキュウハリギリの分布は南九州および ponicaの原稿を引用した)や周年 8月出版の 琉球とされることが多い. しかし,小泉の記載に Flora Japonicaよりも遅いとされている. このた よれば, ミヤコダラは葉質(膜質あるいは薄洋紙 め,Acer pictum Thunberg ex Murray はイタヤカ 質)と葉形,特に 5-9本の主脈と (5-)7裂片を February 1994 Journal of Japanese Botany Vol. 69 No. 1 31 もつ. ミヤコダラとハリギリとは同ーの種である 固くなるが, リュウキュウハリギリとは異なる. と思う.大井 (1953)はミヤコダラをハリギリの 葉の切れ込みの程度に関してはハリギリもケハリ シノニムとした.初島(1978,1986, 1991)は屋 ギリも同じような変異を示す.キレハケハリギリ 久島からハリギりだけを記録している.一方, の形はハリギリにもあり,エンコウカエデとイタ リュウキュウハリギリは琉球(沖縄,久米,石垣, ヤカエデ(狭義)のように樹齢で変わるのではな 西表)にだけ分布するとした(初島 1976). かろうか. リュウキュウハリギリではキレハ形の ハリギリもリュウキュウハリギリも葉の下面の 葉は見られない. 葉脈上と葉基部の脈肢に縮毛があり, これは脱落 リュウキュウハリギリはハリギリに比べると島, 性のもので葉の成長とともに次第に少なくなる. 高温,低地で日照量の多い地域に生育している形 成葉で比べると,ハリギリでは主脈上にまばらに で,地理的にも隔離された生態型である.私はこ 残るが, リュウキュウハリギリでは無毛となる. れをハリギリの亜種と考える.ケハリギリはハリ 一方,ケハリギリでは葉脈上全体に縮毛が密に ギリの多毛形であり,品種として区別できると考 残っている.葉形はリュウキュウハリギリでは, える. そこで,それぞれの学名はKalopanaxsep- 原記載と異なり,主脈は5-7本, (3-)5裂片をも temlobusのもとでは subsp.lutchuensisおよび つものがふつうで,葉質が厚く,表面には光沢が subsp. septemlobus var. septemlobus f. maximowic・ ある.葉質についてはハリギリでも晩秋のものは ziiとなる.

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