Cuatrecasanthus jelski (Hieron.) H. Rob., Revista Colomb. Ci. Exact. 17 (65): 210 (1989).

Robinson, Harold & Funk, Vicki A., 2012, Cuatrecasanthus (Vernonieae, Compositae): A revision of a north-central Andean genus, PhytoKeys 14, pp. 23-41 : 29

3. Cuatrecasanthus jelski (Hieron.) H. Rob., Revista Colomb. Ci. Exact. 17 (65): 210 (1989). Figs 6A 10

Type: Based on Eremanthus jelskii Hieron.

Eremanthus jelskii Hieron., Bot. Jahrb. Syst. 36(5): 462 (1905), non Vernonia jelskii Hieron., Bot. Jahrb. Syst. 36(5): 459 (1905).

Type: Peru. Cajamarca: Prope Shanyn (Quebrada Lejia) [probably not far from Tambillo] [05°40'50"S, 79°16'7"W, Cerro Tambillo, estimated], Jelski 776 (holotype: B, destroyed, photos F, US! [F neg. 14657]; lectotype, designated here: US!).

Vernonia shanynensis MacLeish, Syst. Bot. 9 (2): 135 (1984), nom. nov. for Eremanthus jelskii .

Type: Based on Eremanthus jelskii Hieron.

Description.

Shrubs or small trees, 1.0-3.0 m tall; stems densely velutinous (short velvety) with dark brown trichomes. Leaves with petioles 0.3-0.5 cm long; blades narrowly to broadly elliptical, mostly 3-10 cm long, 1-2.5 cm wide, narrowly acuminate at base and apex, margin narrowly but strongly recurved, with few inturned teeth distally, adaxial surface dark green, glabrous or with appressed puberulence, secondary and tertiary veins insculpate, abaxial surface pale green covered with erect, stiff, yellowish trichomes intermixed with less evident whitish prostrate myceliiform branching trichomes, midvein with dense spreading pubescence; secondary veins ca. 5-6 pairs, spreading from midvein at 45-55° angles, strongly arched. Inflorescence scarcely exceeding vegetative leaves, with intermixed foliiform bracteoles; branches densely pilosulous or hirtellous. Heads sessile in clusters of 3-7 within larger glomerules, 10-11 mm tall × 1.5-2.0 mm wide; involucres cylindrical to fusiform; bracts ca. 9-12 in ca. 4 series, 1-5 mm long, ca. 1.2 mm wide, apices short-acute, ovate to narrowly elliptical, yellowish darkened tip, outer bracts puberulous, inner bracts glabrous outside. Florets with corollas violet, ca. 6 mm long, with glandular dots on tube and tips of lobes, tubes ca. 2.5 mm long, lobes ca. 3.5 mm long; anther thecae deep purple, ca. 3 mm long. Achenes 2.0-2.5 mm long; pappus white, of 32-ca. 50 bristles mostly ca. 6 mm long, not or scarcely broadened toward tips. Pollen grains 37-47 µm in diam.

Additional specimen examined.

Peru. Cajamarca: Prov. Cutervo; La Pucarilla, entre Sócota y San Andrés [6°16'S, 78°42'W, estimated based on elevation], 2500-2650 m, 24 June 1988, Sánchez Vega 4868 (CPUN, F, US); 2450 m, 14 November 1986, Mostacero, Leiva, Mejía, Peláez, & Guevara 1631 (F, HUT); 2 Nov 1991, Sánchez Vega, Sagastegui & Guevara 5990 (CPUN); Prov. San Ignacio; Cordillera del Condor, Munic. Dist. Huarango, Nuevo Mundo, Caserio Rey del Oriente, arriba, Caseríos Gosén [5°19'S, 78°43'W, estimated for CG but elevation too low] y Pisaguas, 1800 m, 26 July 1997, Rodríguez & Campos 1816 (MO, US). Lambayeque: Prov. Ferrañafe; Paso Upaypecc, Cañaris [6°03'S, 79°16'W, estimated for Cañaris], 3000 m, 25 June 1989, Llatas Quiroz 2499 (F).

Habitat.

Rodríguez & Campos 1816 was described as having been collected in primary forest. The range in elevation that has been reported is 1800-3000 m ( Fig. 10 ).

This species was the first member of the genus to be described. At the time of its description, a comparison was made to Brazilian species of Eremanthus , members of the comparatively distantly related subtribe Lychnophorinae . Herbaria that might hold Jelski collections from Peru and therefore might have additional isolectotypes (according to Chaudhri et al. 1972) are F, KRA, NY and W.

Preliminary conservation status.

Data Deficient

Figures

Figure 6. Photographs of Cuatrecasanthus types: A Cuatrecasanthus jelskii, lectotype (US) B Cuatrecasanthus kingii, holotype (US).

Figure 10. Distribution map of Cuatrecasanthus species.