植物研究雑誌 J. J. Jpn. Bo t. 67: 67: 194-200 (1992)

Notulae Crassulacearum Asiae Orientalis (1)

Hideaki Hideaki OHBA

Department Department of Botany ，University Museum ，University of Tokyo ，

7-3-1 7-3-1 Hongo ，Bunkyo ・ku ， Tokyo 113 JAPAN

アジア産ベンケイソウ科植物の分類覚書 (1)

大場秀章

東京大学総合研究資料館生物系研究室 113 東京都文京区本郷 7-3-1

(Received (Received on November 2， 1991)

1) 1) section Sinosedum was regarded as a synonym of . 2) The Chinese was treated as a local variety with differences of inflorescences and flowers. 3) 3) Two new combinations of malacophyllus (Pallas) Fischer were proposed.

During preparation of a revision of the Asiatic As far as the description the is quite species species of Sedum and its allied genera 1 have unique and greatly diversified from other species noticed noticed several noteworthy taxa as well as of Sedum. When 1 published a revisional system novelties. novelties. In this series of notes 1 want to publish of the subfamily Sedoideae (Ohba 1978) ，1 these. these. The abbreviation of herbaria follows suspended taxonomic evaluation of the species. Index Index Herbariorum ， Part 1: the Herbaria of the In 1987 1 had an opportunity to examine the World ， 8th edition ， edited by P. K. Holmgren et authentic specimen at Beijing (PE). Though 1 did l. al. (New York Botanical Garden ， 1990). not find the type and the cotype specimens ，1 could 1) 1) The idenuty of Sedum paoshingense Fu ，the 句'pe examine a single specimen which well agrees with species species of Sedum sect. Sinosedum Fu the description (Fig. 1). Then 1 have borrowed the Sedum paoshingense was described by Fu (1965) specimen from Beijing and observed floral based based on the collection from Baoxing (Paoshing) ， features. Sichuan Sichuan (Szechuan) ，S W China with several The can be described as follows: Leaves extraordinary extraordinary characters. By these characters Fu are oblanceolate ，flat ， extremely thick ， apex established established a monotypic section Sinosedum. acuminate with a prominent short point around 1 The section is characterized by having these such mm long ，sessile and spurless. as as extremely thick leaves ，compact corymbose Flowers (Fig. 2) always haplostemonous. C a1 yx inflorescences inflorescences similar to those of め1010 teleph ium ， thick ，basally ca. 1 mm connate ， lobes triangular and erect free carpels. Later Fu (1 984) added to subulate ， 2.8-3.5 mm long ，0.8- 1. 2 mm wide ， having having 5 stamens to the characteristics. apex obtuse or round ，suberec t. Petals free ，

-194 一 August 1992 Journal of Japanese Botany Vo l. 67 No. 4 195

Fig. Fig. 1. Sedum paoshingense Fu (PE). 196 196 植物研究雑誌第67 巻第4 号 平成 4 年 8 月 subulate subulate or linear-lanceolate ， apex obtuse ，5-6 remains some doubt because 1 could not examine mm long ，1. 1- 1. 3 mm wide ，suberect at f1 ower- the type ， the section Sinosedum is regarded as a ing. ing. Stamens 5，alternipetalous ， always shorter synonym of Sinocrassula. And Sedum paoshin- than than peta 1. 4.5-5 mm long; filaments linear ， gense is treated reasonably as a synonym of erect; erect; anthers oblong-ovate with round apex ， ca. Sinocrassula indica ranging for west Himalaya 0.7 0.7 mm long ， deep red before dehiscence. Nectar- to C China and showing extremely wide range of scales scales rectangular-ovate ，5-6 mm long ， ca. 0.6 variation particularly in the vegetative features. mm wide. Ovaries free from base ，erect ， 4.8-5.5 Sinocrassula. A. Berger in Engler et Prantl ， mm long ，tapering toward apex ，stigmatic portion Nat. P f1.・ fam. 2 Au f1. 18a: 463 (1930) ， pro syn. located located at apex of ovaries ， ::!:: swollen; ovules exc 1. S. aliciae. Lectotype: Sinocrassul α， indica 14-18 14-18 in each locule. Seeds elliptic ， 0.7-0.9 mm (Decne.) Berger (Ohba 1978). long ，testa striate. Sedum sec t. Sinosedum Fu in Acta Phytotax. One of the noticeable external features is the Sin. Add. 1: 115 (1965) ， syn. nov. Type: Sedum leaves leaves with a prominent point at the apex ， though paoshingense Fu. Fu described the apex as acuminate. Besides the Sinocrassula indica (Decne) A. Berger ， op. cit. leaves ， the spread in f1 0rescences with conspicuous Sedum paoshinense Fu in Acta Phytotax. Sin. subulate subulate bracts and the haplostemonous f1 0wers Add. 1: 114 (1 965) ， syn. nov. with with subulate or linear-lanceolate petals agree with Specimen examined. SW China. Sichuan. those those of the species of Sinocrassula ，particularly Garlung Xian ，Puchang ， al t. 700 m (Unknown

S. S. indic α. ， collector 14335 ， PE). The specimen examined agrees Fu's description and represents the species concerned. Though it

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Fig. Fig. 2. Flowers of Sedum paoshingense Fu. a: flowe r. b: calyx-lobe. c: peta l. d: anthe r. e: ovaries. nectar-scale. f: nectar-scale. g: seed. X 10 ，except d，g X 20. August August 1992 Journal of Japanese Botany Vo l. 67 No. 4 197

2) 2) On the record of Hylotelephium sieboldii from this species has been known from a) cultivation China ， b) Shodoshima island ，Kagawa Prefecture One of the famous temperate as in the Setonaikai Sea ，and c) some localities in ornamental ornamental plants ，Hylotell 句phium sieboldii (Sweet Toyama Prefecture ， the Japan Sea side of Honshu. ex ex Hook.) H. Ohba ， which has been known more The cultivated plants agree with the illustration commonly as Sedum siboldii ，was described from accompanied the original description (Curtis's Bo t. an introduced plant to Royal Botanic Gardens ， Mag. 89: t. 5358) ，and show a strong uniformity Kew ，from Japan by Messrs. Henderson (Hooker at least throughout J apan. 1863). 1863). This from Shodoshima shows also the uni- Fu (1984) reported the species to occur in China. formity and is hardly different from the cultivated This This is the first record of the native locality plants ， though Yuasa (1969) wrote the considerable outside outside of J apan. variability ，and the slight difference from the Recently Recently 1 have examined the voucher speci- cultivated plants. Yuasa also wrote the island mens deposited in PE. The specimens (Fig. 3) are is one of the native locality. Not only Yuasa several completely completely glabrous and nearly smooth ， having taxonomists assumed that the species spreaded out creeping creeping stems with branches of which the bases into cultivation from Shodoshima (Ohwi 1965a ， are are more or less bent. It is difficult whether 1965b ，Tomida 1973). the the terminal branch is a part of the main As regard the plant from Toyama Prefecture flowering flowering stem or one of the lateral branches ，and 1 have treated as the local variety (Ohba 1981) or also also whether all these lateral branches have arisen once a different species ， Hylotelephium ettyuense simultaneously simultaneously within the same year or no t. (Tomida) H. Ohba (Ohba 1977). As pointed out The leaves and flowers can be described as by Tomida (1 973) var. ettyuense has a tendency follows: follows: Leaves ternate ， broadly obovate or very to have subsidiary inflorescences from the axils of broadly broadly ovate ，1. 7-2 cm long ，1. 4-2 cm wide ， the upper leaves. The shape of the inflorescence round at apex ， broadly cunate at base ，and entire and leaves is different from that of var. sieboldii along along margins. Inflorescences terminal and also found in cultivation and Shodoshima. arising arising from axils of the uppermost ternate leaves ， The specimens collected from China more with with 30-40 ， semiglobose flowers. approach to var. ettyuense than var. sieboldii in

Flowers Flowers 5・merous. Calyx is basally connate; having small semi-globose inflorescences and entire lobes lobes narrowly ovate or oblong-ovate with round leaves. However ， the Chinese plant differs from apex ， 1-1.3 mm long ，and suberect at flowering. both variaties in flowers; i. e. ， the petals large ， not Petals Petals broadly lanceolate or linear lanceolate well constricted versus small and constricted in var. with with round apex ，5-6 mm long ， 1.6-1.8 mm sieboldii and ettyuense ， ovaries attenuate versus

wide ， margin entire. Stamens a little shorter than stipitate and nectar 開 scales oblong versus linear of petal-length ，anthers broad-elliptic. Nectar-scales them. The Chinese plant is reasonable to be re- oblong ， ca. 0.5 mm long ， ca. 0.3 mm wide. garded as a local variety and named var. chinense. Gynoecium attenuate; ovaries (including style) V ar. chinense was collected in Lichuan Xian ， 5.5-6 5.5-6 mm long ，tapering to styles attaining 1.5-2 Moudao near Shuanghe ， which is located near a mm long ， ovules about 26 in each locule. river joins the 加lodaoqi River ， the type tree of Before Before Fu reported H. sieboldii from China ， Metasequoia gかptostroboides H.H. Hu et Cheng 198 198 植物研究雑誌第67 巻第4 号 平成 4 年 8月

Fig. Fig. 3. Hylotelephium sieboldii var. chinense (type). August August 1992 Journal of Japanese Botany Vo l. 67 No. 4 199

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Fig. Fig. 4. Distribution of Hylotelephium sieboldii. Va r. chinense (China ，Hubei); va r. ettyuense (Japan ， Toyama Prefecture; the Japan Sea side); va r. sieboldii (J apan ，Shodoshima; the Setonaikai Sea). was found in Modaoqi ， a village near the river σig. Hylotelephium ettyuense (Tomida) H. Ohba in 4). 4). Bot. 恥1ag. Tokyo 90: 50 (1 977). Hylotelephium Hylotelephium sieboldii (Sweet ex Hook.) H. Specimens examined. Japan. Honshu. Toyama Ohba in Bo t. Mag. Tokyo 90: 52 (1 977); in J. Fac. Pre f. Zyoganjigawa (cul t. at Bo t. Gard. Univ. Sci. Sci. Univ. Tokyo ，Sec t. III ， 12: 165 (1978). Tokyo) (K. Enomoto in Oc t. 1972 ， TI); Kumano- var. var. sieboldi i. gawa water area ，a branch stream of Jintsugawa Specimens Specimens examined. Japan. Shikoku. Kagawa River (cult. at Bo t. Gard. Univ. Tokyo) (K. Pref. ，Shodoshima ，Kankakei (A. Ishigami on 29 Enomoto on 10 Oc t. 1973 ， TI). Oc t. 1943 ， TI; K. Nakahara on 14 Nov. 1953 ， TI; va r. chinense H. Ohba ，va r. nov. M. Togashi on 19 Nov. 1968 ， TI; H. Ohashi ，H. H. sieboldii sensu Fu in Fl. Reip. Pop. Sin. Ohba & J. Murata 75101 on 10 Nov. 1975 ， TI). 34 (1): 52 (1 984). From origin unknown cultivated plants (Y. Ogura Va r. ettyuense (Tomida) H. Ohba nullo dubio on 23 Oc t. 1914 ， TI; K. Mori on 6 Nov. 1976 ，TI). proxima sed a qua foliis semper tr 汀Oliatis integris var. var. ettyuense (Tomida) H. Ohba in J. Jpn. et inflorescentiis pauci- florum diversa; a typica Bo t. 56: 186 (1 981). varietate foliis latissime ovatis vel ovato-rhombicis Sedum ettyuense Tomida in J. Jpn. Bot. 48: 140 non latissime obovatis nec late obtriangulalibus (1 973). toto integris nec praemorsis et inflorescentiis 200 200 植物研究雑誌第67 巻第4 号 平成 4 年 8月

semiglobosis semiglobosis nec globosis bene differ t. Hooker W. J. 1863. Sedum sieboldi. Curtis's Bot. Mag. 89: 89: t-5358. Type: China. Hubei Prov. ，Lichuen Xian ， Ohba H. 1977. The taxonomic status of Sedum Tel ψ， hium Moudao near Shuanghe ，on rocks. K.-H. Fu & and its allied species (Crassulaceae). Bo t. Mag. Tokyo 90: 90: 41-56. Z.-S. Z.-S. Zhang 1742 on 26 Sept. 1957 (PE). 一一一一一 1978. Generic and infrageneric classification on 3) 3) A new combination of Orostachys the Old World Sedoideae. J. Fac. Sc i. Univ. Tokyo ， Sec t. 111 ， 12: 139-198. As noted in a previous paper ，Orostachys 一一一一一 198 1. Nomenclatural changes and notes on aggregeatus aggregeatus (Makino) Hara is reasonably regarded Japanese Sedoideae. J. Jpn. Bo t. 56: 181-187. 一一一一 and H. Tagawa. 1990. A note of Orostachys as as a local variety of O. mall α cophyllus (Pallas) m αlacophyllus (Pallas) Fischer and its related taxa from Fischer Fischer distributed in Hokkaido and northern northern Japan. Notes towards a monograph of the genus Orostachys (Crassulaceae) (2). J. Jpn. Bo t. 65: Honshu (Ohba and Tagawa 1990). 302-308. 302-308. Otherwise ， Orostachys iwarenge (Makino) Ohwi J. 1953. Sedum Li nn. in Flora of Japan ，586-592 ， Shibundo ，Tokyo (i n Japanese). Hara ， as also considered to a littoral variety of O. 一一一一一 1965. Sedum Li nn. In: Meyer F. G. and E. H. malacophyllus ，which might be distributed in the Walker (ed よ Flora of Japan ，493-498 ，Smithsonian Institution ，Washington ， D.C. pacific pacific side of Honshu ，Shikoku and Kyushu with 一一一一一 1965. Sedum Li nn. in Flora of Japan ，revised some extention to the J apan Sea side. and enlarged ed. ， 685-694 and 1451 ，Shibundo ， Tokyo (in (in Japanese). Orostachys malacophyllus (Pallas) Fische r. Tomida M. 1973. A new Sedum from Pref. Toyama. va r. aggregeatus (Makino) H. Ohba [Ohba and J. Jpn. Bo t. 48: 138-14 1. Yuasa Yuasa H. 1969. Sedum sieboldi and its relative species (4). Tagawa in J. Jpn. Bo t. 65: 307 (1990) ，comb. The native locality -a visit to Shodoshima island. nud.] ，comb. et sta t. nov. Shokubutu-saisyu-nyusu (News of Plant Collecting) ， No. No. 44 ， 59-60 (in Japanese). Cotyledon αggregeat α恥iakino in Bo t. Mag. Tokyo 24: 72 (1 910). 要旨 va r. iwarenge (Makino) H. Ohba [Ohba and Tagawa ，loc. ci t.， comb. nud.] ，comb. et sta t. nov. アジアのベンケイソウ科植物の種族誌のうち， 既に発表したイワベンケイ属とトキワイワレンゲ Cotyledon iwarenge Makino in Bo t. Mag. 属を除く諸属について目下取りまとめ中である. Tokyo 16: 142 (1902). その過程で問題となった種についての覚書を断続

References References 的に発表することにした.1) Sedump αoshingense Fu S. H. 1965. Species et combinationes novae Crassula- がマンネングサ属ではなくテンジクイワレンゲ属 cearum cearum Sinicarum. Acta Phytotax. Sin. Additamentum の種であることを明らかにした. 2) 中国で見い 1: 1: 111-128. 一一一一一 1984. Hylotelephium and Sedum sec t. Sinosedum. だされたミセパヤは変種として区別するのがよい. In: In: Fu S. H. and Fu K. T. (ed よ Flora Reipublicae 3) アオノイワレンゲとイワレンゲの新学名を提 Popularis Popularis Sinicae ，34 (1): 48-60 and 79 (in Chinese 唱した. with with taxonomic treatment in Latin).