Lepidaploa setososquamosa (Hieron.) Angulo & Dematteis (2012: 271)

Marques, Danilo, Farco, Gabriela Elizabeth, Nakajima, Jimi Naoki & Dematteis, Massimiliano, 2018, The genus Lepidaploa (Vernonieae, Asteraceae) in southern South America, Phytotaxa 362 (2), pp. 115-142 : 137

12. Lepidaploa setososquamosa (Hieron.) Angulo & Dematteis (2012: 271) . Vernonia setososquamosa Hieronymus

(1897: 864).

Type:— ARGENTINA. Salta province, Tarija department, Nogalitos, February 1873, P. G. Lorentz & G. H. E. W. Hieronymus 1205 (lectotype COND! [photo!], designated by Cristóbal & Dematteis (2003: 47)). Figure 21 .

Subshrubs 0.4–0.6 m tall; branches setose. Leaves distichous, cauline, internodes 1.1–2.1 cm long, sessile, blade 2.5– 10.2× 0.6–3.2 cm, membranaceous, smooth, oval, ovate-lanceolate, apex apiculate, margins denticulate, base attenuate, both surfaces setulose; venation eucamptodromous-brochidodromous. Capitulescence seriate-cymose or paniculiform with capitula sessile, 10–20 cm long, axis densely velutinous, brown to green-yellowish. Involucre campanulate, 12–14 mm in diam., phyllaries 5–6-seriate, brown or greenish with blackened apex, scarious to membranaceous, tomentose, outer linear-lanceolate, apex aristate, inner elliptic-lanceolate, apex aristate. Florets 23–25, corolla violet, tube 4–5 mm long, glabrous, lobes 3.5–5 mm long, lanceolate, apex setose; apical anther appendages acute, base slightly obtuse; basal stylar node enlarged. Cypsela turbinate, 1.55–1.7 mm long, sericeous-glandular, idioblasts present; carpopodium anullar. Pappus white.

Selected specimens examined — ARGENTINA. Salta: Rosario de Lerma, Dique Las Lomitas, Ribera Oeste, 09 February 1997 L.J. Novara 10877 (CTES). PARAGUAY. Alto Paraguay: Camino Gabino Mendoza a General Garay, 31 March 1995, R. Degen 3298 (FCQ). Boquerón: Parque Valle Natural, 12 km de Filadelfia, 28 February 1991, R. Vanni 2476 (CTES).

Distribution and habitat —In southern South America the species is distributed in Argentina (Salta) and Paraguay (Alto Paraguay and Boquerón). In the study region the species inhabits fields on sandy soils in the Cerrado ( Figure 20 ).

Phenology —Collected with flowers from November to March.

Notes —This species is morphologically similar to L. remotiflora and L. amambaia , which also occur in southern South America. However, L. setososquamosa has a more restricted distribution than L. remotiflora and can be differentiated from the latter by its leaves with apiculate apex, eucamptodromous-brochidodromous venation, inner phyllaries with apiculate apex and absence of glandular trichomes on the style branches and corolla lobes. In turn, L. setossosquamosa is distinguished from L. amambaia by its heads with 23–25 florets, sessile leaves 12–14 mm long, and sericeo-glandular cypselae. See comments under L. amambaia and L. remotiflora .

Figures

FIGURE 20. Geographical distribution of L. salzmannii (circle), L. setososquamosa (square) and L. tarijensis (triangle) in Cone Sur.

FIGURE 21. Lepidaploa setososquamosa. A. Plant. B. Abaxial leaf surface detail. C. Capitula. D. Floret. Source: Marques & Dematteis (2014).