Takhtajaniantha Nazarova, Biol. Zhurn. Armenii 43: 179. 1990.

Zaika, Maxim A., Kilian, Norbert, Jones, Katy, Krinitsina, Anastasiya A., Nilova, Maya V., Speranskaya, Anna S. & Sukhorukov, Alexander P., 2020, Scorzonera sensu lato (Asteraceae, Cichorieae) - taxonomic reassessment in the light of new molecular phylogenetic and carpological analyses, PhytoKeys 137, pp. 1-85: 1

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scientific name

Takhtajaniantha Nazarova, Biol. Zhurn. Armenii 43: 179. 1990.
status

 

Takhtajaniantha Nazarova, Biol. Zhurn. Armenii 43: 179. 1990.  

= Scorzonera sect. Fibrillosae   Nakai, Rep. Inst. Sci. Res. Manchoukuo, ser. 1, 6: 171. 1937. Type: Scorzonera glabra   Rupr. [= S. austriaca   Willd.]

= Scorzonera subsect. Egregia   Kult., Tau-Sagyz Ekol. Osnovy Vvedeniya Ego Kul’t.: 108. 1938.

Scorzonera subg. Egregia   (Kult.) Ovcz., Soobshch. Tadzhiksk. Fil. Akad. Nauk SSSR 20: 54. 1950.

Scorzonera sect. Egregia   (Kult.) Lipsch., Fl. URSS 29: 58. 1964. Lectotype (designated here): Scorzonera tau-saghyz   Lipsch. & G.G.Bosse

= Scorzonera sect. Pusillae   Lipsch., Fragm. Monogr. Gen. Scorzonera   2: 59. 1939. Type: Scorzonera pusilla   Pall.

= Scorzonera sect. Capito   Tzvelev, Rast. Tsentral. Azii 14b: 115. 2009. Type: Scorzonera capito   Maxim.

Type species.

Takhtajaniantha pusilla   (Pall.) Nazarova

Diagnostic features.

Perennials; caudex often with dark brown fibrous leaf sheath residues and base of the rosulate leaves often lanate; pollen with 6 lacunae.

Description.

Habit, life form, subterranean parts: perennial herbs or subshrublets with a taproot or a tuber.

Leaves: rosulate or crowded in the basal part of the stem, rarely dispersed along the stem, sessile or petiolate, filiform or ovate, apically sometimes hooked ( T. pusilla   ), margin flat or undulate, entire or denticulate.

Stem, synflorescence: stem solitary or branched, scape-like or leafy, capitula terminal.

Pollen: echinolophate, tricolporate and each colpus divided into 2 lacunae, with 6 abporal lacunae (sometimes with spineless areas resembling rudimentary lacunae ( Blackmore 1982).

Capitula: glabrous to arachnoid hairy or tomentose, phyllaries in several series, outer phyllaries smaller than inner ones, triangular-ovate, inner phyllaries linear to ovate, receptacle glabrous, flat, with many or rarely few (up to 12: T. pseudodivaricata   ) florets; florets yellow (Fig. 16D View Figure 16 ) or with dark red veins, usually clearly exeeding the incolucre.

Achenes: 5-15 mm, without carpopodium, straight or slightly curved, often with 10 ribs or rarely roundish, glabrous or hairy, sometimes (as in T. pusilla   ) with stout conglomerations; achene wall with parenchyma of two types, with thick- and thin-walled cells, present only as subepidermal continuous layer(s) or only with thick-walled cells, air cavities absent, sclerenchyma with continuous layer with a narrow or wider hunch on either side of the principal rib or, as in T. pseudodivaricata   , without hunches, but discontinuous forming 5 bundles (with a gap in the principal ribs), or continuous, its fibres orientated parallel to the fruit axis, tannins absent.

Pappus: 7-28 mm, ice white or dirty white, bristles scabrid in upper part.

Chromosome number: x = 7 (diploids); 2n = 28 in T. pusilla   (amphiploid); in T. tau-saghyz   polyploid cytoraces 2n = 14, 21, 28, 42 and aneuploids with chromosome numbers 15, 16, 17, 18, 22 and 24, 28 and 42 are known ( Krayevoy 1934; Poddubnaya-Arnoldi et al. 1934; Sosnovets 1960).

Species.

(1) Takhtajaniantha austriaca   (Willd.) Zaika, Sukhor. & N.Kilian, comb. nov. (Fig. 16D View Figure 16 ) ≡ Scorzonera austriaca   Willd., Sp. Pl. 3(3): 1498. 1803 (incl. S. glabra   Rupr.). urn:lsid:ipni.org:names:77204033-1

(2) Takhtajaniantha capito   (Maxim.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera capito   Maxim., Bull. Acad. Imp. Sci. Saint-Pétersb. 32: 491. 1888. urn:lsid:ipni.org:names:77204030-1

(3) Takhtajaniantha crispa   (M.Bieb.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera crispa   M.Bieb., Fl. Taur.-Caucas. 2: 234. 1808. urn:lsid:ipni.org:names:77204028-1

(4) Takhtajaniantha ikonnikovii   (Krasch. & Lipsch.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera ikonnikovii   Krasch. & Lipsch. in Lipschitz, Fragm. Monogr. Gen. Scorzonera   1: 109. 1935. urn:lsid:ipni.org:names:77204024-1

(5) Takhtajaniantha mongolica   (Maxim.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera mongolica   Maxim., Bull. Acad. Imp. Sci. Saint-Pétersb. 32: 492. 1888. urn:lsid:ipni.org:names:77204020-1

(6) Takhtajaniantha pseudodivaricata   (Lipsch.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera pseudodivaricata   Lipsch., Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol. 42: 158. 1933. urn:lsid:ipni.org:names:77204019-1

(7) Takhtajaniantha pusilla   (Pall.) Nazarova

(8) Takhtajaniantha subacaulis   (Regel) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera austriaca var. subacaulis   Regel, Trudy Imp. S.-Peterburgsk. Bot. Sada 6: 323. 1880. urn:lsid:ipni.org:names:77204015-1

(9) Takhtajaniantha tau-saghyz   (Lipsch. & G.G.Bosse) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera tau-saghyz   Lipsch. & G.G.Bosse, Trudy Nauchno-Issl. Lab. Tresta "Kauchukonos" 4: 27. 1930. urn:lsid:ipni.org:names:77204010-1

(10) Takhtajaniantha veresczaginii   (Kamelin & S.V.Smirn.) Zaika, Sukhor. & N.Kilian, comb. nov. ≡ Scorzonera veresczaginii   Kamelin & S.V.Smirn., Turczaninowia 5(1): 17. 2002. urn:lsid:ipni.org:names:77204008-1

Distribution area.

N Africa: EG. Asia-Temperate: AF; AR; AZ; CN; IL; IR; JO; KG; KP; KR; KZ; MN; RU (Asiatic part); SA; TJ; TM; UZ. Asia-Tropical: PK. Europe: AL; AT; BA; BG; BY; CH; CZ; DE; FR; GR; HR; HU; IT; MD; ME; RO; RS; RU; SI; SK; UA.

The following species may belong to Takhtajaniantha   , based on their morphological characters (they were included neither in the carpological nor in molecular investigations):

Scorzonera aniana   N.Kilian, S. grubovii   Lipsch., S. karataviensis   Kult. (possibly a synonym of T. tau-saghyz   ), S. manshurica   Nakai, S. pamirica   C.Shih, S. sinensis   (Lipsch. & Krasch.) Nakai

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Asteraceae

Loc

Takhtajaniantha Nazarova, Biol. Zhurn. Armenii 43: 179. 1990.

Zaika, Maxim A., Kilian, Norbert, Jones, Katy, Krinitsina, Anastasiya A., Nilova, Maya V., Speranskaya, Anna S. & Sukhorukov, Alexander P. 2020
2020
Loc

Scorzonera sect. Capito

Maxim 1888
1888
Loc

Scorzonera capito

Maxim 1888
1888
Loc

Scorzonera pusilla

Pall 1773
1773