Jacobaea othonnae subsp. anomala (Sm.) Sutorý

Sutorý, Karel, 2021, Taxonomic and nomenclatural notes on Jacobaea othonnae (Asteraceae- Senecioneae-Senecioninae), Phytotaxa 510 (1), pp. 61-68 : 65-66

Jacobaea othonnae subsp. anomala (Sm.) Sutorý , stat. et comb. nova.

Basionym:— Cacalia anomala Smith (1813: 179) . Senecio anomalus (Sm.) Candolle (1838: 310) .

Type:— GREECE. Mt. Athos, [August 1787], J . Sibthorp ( OXF, lectotype designated here, on two sheets; isolectotype: BM001025972 ) .

As the lectotype, according to the guidelines of Lack (1997), I selected a specimen from the original Sibthorp’s collection that bears an original Smith’s label.

Diagnosis:—Involucres and the synflorescence woolly tomentose. ( Fig. 4 B ).

Distribution:—Its range is limited to a small area of the Athos peninsula (Khalkidhiki, Greece), probably almost exclusively to its southern calcareous part. Strid & Strid (2013) mention a locality on the southern slopes of Athos where probably most of the known specimens were collected. Glabrous plants have not been recorded from this calcareous area. This stenoendemic subspecies adds to the more than 20 endemic plant taxa at various rank known from this small territory (our estimations). Shishkin (1961) erroneously stated that Senecio anomalus (Sm.) DC. is a vicariate species growing in the whole Balkans.

Smith’s (1813) original brief diagnosis did not mention the pubescence of plants from Athos.

“C [acalia] anomala , floribus paniculatis, radio uniflosculoso, foliis pinnatifidis inciso-serratis acutis glabris. Caulis humanae fere altitudinis. Folia sesquipedalia, multijuga. Flores copiosi, aurei, omnes flosculo ligulario solitario, patente, notabiles. In monte Athô. Icon Fl. Graec. T. 872ˮ.

This character was much later mentioned in a more comprehensive description in Flora Graeca ( Lindley 1839: 56).

“… Capitula numerosa, in corymbum nunc pedem fere latum disposita; pedunculis tomentosis, sparse bracteolatis. Involucrum tomentosum, pentaphyllum; … ˮ.

The pubescence is well visible in the early spring. Plants collected later must be observed more carefully because the soft hairs are pressed to the stems or involucral bracts and are less conspicuous. This is probably due to the influence of the weather, mainly rain.

Examined specimens were collected by eight collectors:

GREECE:— Aucher - Éloy P. M . R.: Herbier d’Orient 1836, sec. Aucher-Éloy (1843: 370), No 3404: Athos ( UPS V-157596; W s.n.; P03729689 ) ; In umbrosis montis Athonis Macedoniae , ( P03729688 ; P03675358 ; P03675359 ; P03675360 ; P03675361 ; P03675362 ; P03675363 ; P03675364 ) . Janka V.: Iter Turcicum 1871: In m. Athone: locis umbrosis pinetorum declivitatis occidentalis. 22 July 1871 ( B s.n.; BP 466555, 466556 , 466559 , 466560 , 411558 , 411560 , 411561 ; BRNM 14301 /35; G 00765316 ; PR 694638; W 1889-38857 ) . Sintenis P. & Bornmüller J.: Iter Turcicum 1891, No. 755: Mons Athos, in regione abietina. 9 July 1891 ( BP 466558, 631658 ) ; Peninsula Hagion Oros. Kerasia, in silva. 9 July 1891 ( B s.n.; BEOU; BP; BRNM 14302 /35; LD 1983200 , 1982944 , 1975776 ; P04143088 ; P03729696 ; P03729691 ; P03729687 ; PR 694637, PRC, W 1892-9526 ) . Chilandarec S. (Brëuer S.) : Athos (without further locality and dates) ( BEOU); Russik [monastery St. Panteleimon], v lese [in the forest]. Červenec [July] ( PR 694632) . Formánek E.: Macedonia: Kerusa [Karyes or Kerasia], August 1900 ( PR 694631) . The specimen was collected some days before the collector’s sudden death (9 August 1900) and was posthumously processed by Karel Vandas, who, very probably, was not able to read Formánek’s provisional field label correctly. Dimonie M.: Hagion Oros coenobium Prodrom mt. Athon s.d., ( BP 466562) ; Hagion Oros mtis. Athou, solo calcareo alt. 1200–1500 m, July 1908 ( BP 411557 , PRC, W 1909-6945 ) ; Athos: prope pagum Prodrom, 200 m alt. May 1909 ( BEOU) . Pinatzi L . C.: Hagion Oros – prope coenobium Iberon , Flora graeca 17380, 12 June 1961 ( B) ; Hagion Oros – inter Roussico [monastery St. Panteleimon ] – Karyes, 670 m, in castaneis, Flora graeca 17381, 12 June 1961 ( B) . Sutorý K.: NW slopes of the northern ridge of Mt. Athos. End of abandoned forest road, 40°10’09” N, 024°18’41” E, 1100 m, 20 June 2017 ( BRNM 789608 ) .

Figures

FIGURE 4. Detail of the inflorescence: A. Jacobaea othonnae subsp. adamsii; B. Jacobaea othonnae subsp. anomala.