Marrubium eriocephalum, Seybold, 1978

Firat, Mehmet, 2016, Marrubium eriocephalum (Lamiaceae); a species new to the flora of Turkey, with contributions to its taxonomy, PhytoKeys 58, pp. 9-20 : 11-12

Marrubium eriocephalum

Type.

Iraq: Perrish, 3340 m, 27.08.1957, Ali-al-Rawi & Serhang 24522, (holotypus K; http://specimens.kew.org/herbarium/K000249641). (Figs 2 - 3 , Table 2 ).

Ascending erect, branched, perennial herb. Stems 15-50 cm, yellowish to greyish, densely white lanate hairy. Basal leaves elliptic to rotund, petiolate, petiole 8-20 mm, lamina 10-22 × 21-35 mm, irregularly or regularly crenate to serrate, densely lanate with stellate hairs. Cauline leaves petiolate, flabellate, lunate or rotund, irregularly or regularly crenate-serrate, and densely lanate with stellate hairs. Verticillasters, 1-3(5), globular 18-27 mm diameter, 15-35 flowered. Bracteoles subulate, as long as long calyx teeth, densely spreading stellate villous to lanate hairy, 10-14 mm. Calyx purplish to greenish, tubular, tube 5-7.5 mm long, 5 -toothed with teeth subequal 2.5-5.5 mm long, erect, long stellate hairy with short or sessile glandular hairs. Corolla yellowish sometimes purplish on upper lip, yellowish within lip, 7-11 mm long, 2-lipped; upper lip straight, bifid 0.5-1 mm long; lower lip 3-lobed, middle lobe of the lower lip 3-4 mm wide, densely long stellate hairy, lower part of the corolla tube sometimes with glabrous and/or a few sessile glandular hairy. Nutlets brownish to greenish, oblong, 2.5 -3.4 × 1.1-2.10 mm, verrucate. Pollen grains isopolar, tricolpate, oblate (P/E 0.89), polar axis (P) 27.49 μm, equatorial axis (E) 30.75 μm, amb triangular, exine 1.91 μm, the colpus membrane granulate, exine psilate- reticulate.

Examined material.

Turkey. B9 Van; Başkale, Ispiriz Mountains West , Serpantine rocks, 3259 m, 38°04'17"N, 43°56'23"E, 11.09.2013, M. Fırat 30289 & E. Hamzaoğlu (in flower), VANF; ibid M. Fırat 30335 (in fruit) VANF; B9 Van; Başkale, Ispiriz Mountains East , Mobile limestone screes, near serpentine rocks, 3419 m, 38°05'04"N, 43°57'26"E, 15.09.2014, M. Fırat 31010 (in flower), VANF .

Habitat.

Mobile limestone screes, near serpentine rocks, 3200-3500 m, in very sparse vegetation.

Phenology.

Flowering and fruiting times from August-October.

Distribution in Turkey.

Van province.

General distribution. Kurdistan region of Iraq, Turkey.

Associated with.

Allium oreophilum C.A.Mey., Didymorphysa aucheri Boiss., Jurinella moschus (Hablitz) Bobrov subsp. moschus , Heracleum sp.

Vernacular name.

In Van province, indigenous people use the name “Bizbizok” for Marrubium ( Fırat 2013).

Figures

Figure 2. Marrubium eriocephalum A habit and habitat B flowers C calx and bracteoles D yellowish form E greyish form.

Figure 3. A Marrubium eriocephalum holotype Ali-al-Rawi & Serhang 24522 K B Marrubium astracanicum Isotype Bornmueller 5476 K C Marrubium vanense Metin Armagan 2042 VANF D Marrubium eriocephalum habit (Ispiriz Mountaiuns-fresh).