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FURTHER TRANSFERS OF GLANDULAR-PUBESCENT SPECIES FROM CHENOPODIUM SUBG. AMBROSIA TO DYSPHANIA (CHENOPODIACEAE) PDF

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Preview FURTHER TRANSFERS OF GLANDULAR-PUBESCENT SPECIES FROM CHENOPODIUM SUBG. AMBROSIA TO DYSPHANIA (CHENOPODIACEAE)

: FURTHER TRANSFERS OF GLANDULAR-PUBESCENT FROM SPECIES CHENOPODIUM TO AMBROSIA DYSPHANIA (CHENOPODIACEAE) SUBG. L Mosyakin Sergei Steven Clemants E. Kholodny M.G. of Botany Institute Academy of Sciences of Ukraine 2 Tereshcher 01601 UKRAINE )kivska Street Kiev, ooklyn,. ABSTRACT new rhe following corribinations in Dysphania are proposed for 21 species pr & D Simon) Mosyakin Clemants, *a (L.E. & nandonii Watson Mosyakin Clemants, D. stellata andley) Mos; (S. (St ) INTRODUCTION The genus Chenopodium L. (Chenopodiaceae) in traditional wide circumscription has long been its sus- pected to be an unnatural (polyphyletic or paraphyletic) union of taxa belonging to different phylogenetic many Consequently, and lineages. segregate genera infrageneric taxa of various ranks were described and by accepted within this group various authors an overview in The genus Dysphania (see Scott, 1978). R. Br. during turbulent taxonomic and nomenclatural experienced numerous from history its also shifts: a single & genus of a separate family Dysphaniaceae (Pax Hoffmann 1934) or a representative of Illecebraceae or Caryophyllaceae— mere Chenopodium to a section of (Aellen 1930a, 1930b; see also discussion Eckardt in: s.l. & & Mabry Behnke Wilson Mosyakin 1967; 1976; Scott 1978; 1983, 1984; Clemants 2002, and references & The therein). present article continues a series of our publications (Mosyakin 1993; Mosyakin Clemants & 1996, 2002; Clemants Mosyakin 2003) on Chenopodium and segregates. L. its s.l. & we (Mosyakin Clemants Earlier 2002) justified the transfer of species previously placed in Chenopodium commonly Ambrosia and L. subg. AJ. Scott, called henceforth referred to as glandular chenopods, the to new genus and Dysphania, validated taxonomic combinations in preparation for the treatment of the genus in & Flora oj North America north Mexico (Clemants Mosyakin 2003). At that time we made 18 new combina- of including 4 and tions, 11 at the species level, at the section level, 3 at the level of subsection. Nomenclatural changes were essentially limited to taxa occurring in North America (both native and introduced), leaving number chenopods glandular be a of yet formally transferred Dysphania. to to Journal of the Botanical Research Institute of Texas 2(1) 426 an chenopods within glandular The taxonomic and nomenclatural decisions treating Mosyakin The genus Dysphania circumscribed were further discussed in the Dr. Sci. dissertation of (2003). Chenopodiaceae Chenopodium has been accepted the treatments of for include glandular taxa of so as to all & Mos- (Zhu Mosyakin and China Gelin, North America north Mexico (Clemants 2003) Flora of in Flora oj of & from Chenopodium Dysphania (D. Clemants At one additional transfer of a species to yakin 2003). least & & Lambinon Lambinon) has been made (Verloove 2006) since then. Verloove (Murr) pdseudomultiflora genus Here we new combinations in Dysphania for other species not transferred to that earlier. validate However, We on within Dysphania. making phylogenetic relationships from conclusion here specific refrain mor- herbarium and experience, studies of our judging from thorough analysis of relevant literature, field a new we Dysphania the circum- in chenopods, firmly believe that and biogeography glandular phology of 2002 was confirmed from Chenopodium Since partly scription a natural phylogenetic unit distinct s.s. it is by molecular phylogenetic studies. DISCUSSION between three confirmed some extent deep phylogenetic split at least Results of recent molecular studies to a Chenopodium (Kadereit 2003, branches containing taxa previously traditionally placed in s.l. et al. (clades) named Chenopodieae informally Chenopodium appeared scattered in three lineages I, II, 2005). Species of s.l. subgenera mainly corresponded recognized and The segregation of species between these three clades to III. and Ambrosia respectively; see Hiitonen, Scott, Chenopodium (subgenera Chenopodium, Blitum (L.) A.J. of I. s.l. 976) indicated: "In Chenopodieae a close relationship 1978). In particular, Kadereit et (2003, III, Scott, al. p. Chenopodium and Chenopodium and of the Australian species of the Eurasian species hotrys Teloxys aristata, by presence multicelluar glandular hairs (type 8 and supported the of Dysphania cristatum glomulifera, is Simon These By they into subgenus Ambrosia (Scott 1978; 1996). <. .> in Carolin 1983). that character, fit . Ambrina Chenopodium Mosyakin and Clemants subg. (2002) transfer [sic! confirm the proposal of to results & - and Chenopodiaceae Kadereit M. C] Dysphania .>." In a study of the origin age of Australian to <. S. S. . Mosyakin and Clemants used morphological characters (2002) indicated that "[recently, (2005, 74) et al. p. view sup- Ambrosia from Chenopodium, and included in Dysphania. This last is strongly separate subg. it to by ported our results." would be recognize several gen- our wide circumscription of Dysphania to Other options alternative to = Moq., or also other Chenopodium example, Moq. (including only aristatum L. T. aristata (L.) Teloxys era, for may American which be recognized either in the original Moq. an group, (mainly Roubieva related taxa), American Australian group previously Moquin-Tandon with addition of other taxa), the or sense of (1834), circumscription. and Australian Dysphania in traditional Chenopodium Orthosporum its placed in R.Br., sect. seem schemes Chenopodium of These groups, corresponding mainly to sections in various classification s.l, knowledge, has our present of such groups genera, level be However, recognition of as at least at natural. to many our In opinion, paraphyly uncertain phylogenetic positions of taxa. or yet negative aspects related to its but excluding other Orthosporum, expanded circumscription olDysphania (including related sect. a slightly morphological applicable would be inconvenient, because will erase practically non-Australian taxa) also it broader genus from other glandular taxa. distinguishing the resulting diagnostic characters we place For avoiding such problems and for maintaining the nomenclatural stability strongly prefer to and by which by glandular trichomes also other chenopods Dysphania, characterized glandular in its is all Carolin 1983; morphological and biochemical characters extensively discussed in literature (Scott 1978; Simon Bonzani 2003 Wilson Palomino 1990; Schwarzova 1993; 1995, 1996; et al. etc.). 1983; 1984; et al. from we new nomenclatural combinations the species level resulting 21 at In the present validate article A narrow concept applied, moderately species Dysphania. is glandular-pubescent species the transfers of to and chenopods" species of which mainly with prevalent taxonomic treatments of "glandular consistent is and We many considered groups are in need of further revisions Chenopodium admit species of the that s.l. new Dysphania making combinations in for more but should not preclude available that detailed studies, New Mosyakin and Clemants, combinations Dysphania in 427 them. In addition to our experience and herbarium studies of these taxa, we especially consulted with and upon taxonomic by relied the basic publications Aellen (1930a, 1930b, 1933, Aellen and 1973), Just (1943), Wilson Simon (1983, 1984, 1987), (1995, 1996, 1997), as well as other relevant works (Voroshilov 1942; Weber Scott 1978: Carolin 1983; 1985; Palomino 1990; Kiihn 1993; Schwarzova 1993; Uotila et 1997, al. 2001). NEW HE COMBINATIONS & Dysphania Orthospora Mosyakin 1. sect. (R. Br.) Clemants, Ukrayins'k. Bot. Zhurn. 59:382. 2002. w names Several of putative hybrids between Australian taxa belonging Dysphania Orthospora to sect. published Wilson (Aellen 1933, 1961; 1983, 1984). However, since taxonomic remains their status uncert, and their hybrid origin mostly in need of confirmation, we refrain from making here any new combii is tions for hybrids. & Dysphania melanocarpa Q.M. Mosyakin comb. Black) Clemants, nov. Chenopodium Basionym: carinatum R. Br. & Dysphania pusilla (Hook, Mosyakin Clemants, comb. nov. f.) Bash & Dysphania truncata Mosyakin (EG. Wilson) Clemants, comb, nc & Dysphania Mosyakin saxatilis (EG. Wilson) Clemants, comb, i The species was described by Wilson from Western Aus last (1983) noted would species that "[superficially species appear be this to i genus Dysphania D. rhadinostachyd) but in seed character (e.g. Chenopodium and to pumilio of the section Orthospoi allies its since the other species of this section have flowers arranged in compact glomerules, have one stamen, and normally a 5-merous perianth." (Wilson Wilson compared with members 1983, 180). also his species p. of the Chenopodium botrys group (which evidently differ from in having 5-merous perianth and C. saxatilis and horizontal seeds) section Margaritaria (which has whitish subglobose, as well as glandular, hairs, and some other Brenan and concluded distinctive characters, see 1956), that appears that C. saxatile does not "it fit satisfactory into any of the presently recognized groups." E.G. Wilson refrained from describing a new monotypic and expanded section instead the circumscription Chenopodium Orthosporum of include sect. to we Fending his species. further research, keep the species in Dysphania Orthospora. sect. & Dysphania Adenois Mosyakin 2. (Moq.) Clemants, Ukrayins'k. Zhurn. 59:382. 2002. sect. Bot. & & In our previous publications (Mosyakin Clemants 2002; Clemants Mosyakin 2003; Zhu Gelin et al. we 2003) mentioned that opinions vary widely regarding the proper species delimitation in with this section, some authors recognizing just a few species, including extremely polymorphic Chenopodium ambrosioides L. with more infraspecific taxa, while other authors preferring several (up to 12) narrowly circumscribed species (Aellen 1929, 1961, 1973; Aellen &Just 1943; Voroshilov 1942; Simon 1996, 1997; Giusti 1997). Sometimes same the author (notably Aellen) in different periods of his work was of differing opinions regarding the We number of species related to C. ambrosioides. believe that taxa in this group differ from each other not many than less generally recognized species of Chenopodium Chenopodium), (subg. especially in the C. s.l. Numerous album group. were and some recognized infraspecific entities in C. ambrosioides other variable we taxa. In the present article are concerned with the species-level taxonomy, and thus for the time being new from making any and refrain infraspecific infrageneric combinations. Research of Texas Journal of the Botanical Institute 2(1) & comb. Dysphania dunosa Simon) Mosyakin Clemants, nov. (L.E. & comb. no\ Dysphania Mosyakin Clemants, oblanceolata (Speg.) & comb. Dysphania retusa ex Moq.) Mosyakin Clemants, nov. Basionym: Chenopodium retusumjusi (Juss. & Ac comb. sooanum Dysphania sooana Mosyakin Clemants, nov. Chenopodium Aellen, Basionym: (Aellen) & Dysphania tomentosa Mosyakin Clemants, comb. nov. chenopodium tomentosum (Thouars) Basionym: & nov comb, Dysphania venturii (Aellen) Mosyakin Clemants, Basionym: chenopodium ambrosioides L. sl & Zhurn. Chenopodium Aellen ex Vorosch., Bot. S.S.S.F Aellen in Aellen Just, Amer. Midi. Naturalist 30:5 1. 1943. venturii & Zhurn. 59:382. 2002. Dysphania Roubieva Mosyakin Clemants, Ukrayins'k. Bot. (Moq.) 3. sect. & comb. Dysphania bonariensis (Hook, Mosyakin Clemants, nov. Basionym: Roubievabonarien f.) 1934. Pflanzenfam. 16c:491. comb, nonTen. 1833. Chenopodium haumanii Ulbr. in Engl. GrPrantl, Nat. 1923, illeg., & comb. .AnalesUni Dysphania microcarpa Mosyakin Clemants, nov. Basionym: Roubieva microcarpa Phil. (Phil.) & 2002. Zhurn. 59:383. Mosyakin Clemants, Ukrayins'k. Bot. Dysphania Botryoides Mey.) (C.A. 4. sect. & & Mosyakin Botrys Dysphania Botryoides Mosyakin Clemants subsect. (Aellen lljin) Mey.) (C.A. 4a. sect. & 2002. Zhurn. 59:383. Clemants, Ukrayins'k. Bot. combination Che- name Chenopodium often incorrectly cited as a The subsection within the genus is of this & name by Koch published illegitimate, Koch) Aellen Since the is nopodium subsect. Botrys (W.D.J. lljin. who only name and provided description in should be Aellen its above subsectional attributed to lljin, the which by Koch, and description pre-1935 publication Russian, but also included a reference to the earlier makes published. subsection validly their & Dysphania nepaknsis Mosyakin Clemants, comb. nov. Chenopodium nepalense Colla, Herb. Pede- Basionym: (Colla) DC, Moq. 1849. Chenopodium in Prodr. 13(2):75. multiflorum but in Asian morphologically resembles D. schraderiana in its habit, differs This little-known Central species having weakly keeled perianth segments with simple non-glandular hairs at the keel (Uotila 1993, 1997). from Chenopodium Dysphania was to recently transferred Another D. schraderiana species closely related to & Lambinon Chenopodium Schrad. subsp. pseudomultiflorum foetidum (Murr) Verloove (= as D. pseudomultiflora (Murr) Uotila) pseudomultiflorum (Murr) Aellen, pseudomultiflorum C. Murr, schraderianum Schult. var. C. & from South African origin differs Lambinon indicated that this species of 2006). Uotila (2001) (Verloove New Mosyakin and Clemants, combinations Dysphania in & Dysphania procera ex Moq.) Mosyakin (Hochst. Cler Taxa unplaced Dysphania 5. yet in sections of & Dysphania Mosyakin comb. stellata (Standley) Clemants, nov. Basionym: Chenopodium stdlatumS. Watson, Proc. This morphologically deviant species having 6-8 perianth segments (described from Coahuila, Mexico by and placed Standley genus Meiomeria then Chenopodium (1916) in a separate Standley, transferred to A Meiomeria (Standley) Scott (Scott 1978). Relationships of this little-known taxon with other repres. J. Dysphania remain known. tives of insufficiently ACKNOWLEDGMENTS This and our previous on Dysphania were during our work on article publications initiated treatments of Chenopodium and Dysphania North America (FN and China and the Flora of A) Flora of (FC) for projects, during several visits of the author to the Missouri Botanical Garden, Louis (MO) and the Brooklyn first St. NY Botanic Garden, The and (BKL). authors are grateful to the staff of these institutions herbaria for their FNA FC kind help and cooperation. Special thanks are due to colleagues involved in the and projects (listed Hoch Nancy Morin alphabetically): Ihsan Al-Shehbaz (MO), Peter (MO), (FNA, Point Arena, California), who Peter Raven (MO), James Solomon (MO), Nicholas Turland (MO), and James Zarucci (MO), facilitated We Thomas our research. are also grateful to Borsch (Bonn, Germany), Helmut Freitag (Kassel, Germany), Gudrun Kadereit (Mainz, Germany), Aleksandr Sukhorukov (Moscow, Zoya Tsymbalyuk Russia), (Kiev, whom we and with Ukraine), Uotila (Helsinki, Finland), other colleagues discussed various Pertti issues related taxonomy, morphology and geography Chenopodiaceae. Thanks due Barney Lipscomb, to of are to Donald and two anonymous comments on reviewers manuscript. Pratt, for their valuable the REFERENCES Journal of the Botanical Research Institute of Texas 2(1) 430 63:490-492. Chenopodium Jahrb. 930b. neue Sektion der Gattung (Sect. Tetrasepola). Bot. Syst. Eine Aellen, P. 1 Orthosporum der Gattung Chenopodium L Verh. 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