Lychnocephalus mellobarretoi (Barroso) Loeuille, Semir & Pirani, 2019

Loeuille, Benoît, Semir, João & Pirani, José R., 2019, A synopsis of Lychnophorinae (Asteraceae: Vernonieae), Phytotaxa 398 (1), pp. 448-450 : 448-450

2. Lychnocephalus mellobarretoi (Barroso) Loeuille, Semir & Pirani , comb. nov. Lychnophora mellobarretoi ( Barroso 1956: 261) . Type:— BRAZIL. Minas Gerais: Santa Luzia, Serra do Cipó , km 138, estrada do Pilar , 2 November 1938, H.L. de Mello Barreto 8971 (holotype: RB [ RB00650576 ]; isotypes: BHCB [ BHCB000060 ], F e! [ F0077154 F]) ( Fig. 20 F ).

Distribution and habitat: — Brazil (Minas Gerais, known only from Serra do Cipó.). Campo rupestre; 1300– 1380 m.

Taxonomic Notes: —Distinctive features are the petiolate leaves with eucamptodromous venation. Similar to L. tomentosa , which has a more robust habit than L. mellobarretoi , 5–10 florets per capitulum (vs. 4–6) and lacks an extremely reduced outer pappus. Also resembling L. humillimus : see that species for a discussion of the differences.

Representatives specimens: — BRAZIL. Minas Gerais: Santana do Riacho, Serra do Cipó, km 128 da rodovia Belo Horizonte– Conceição do Mato Dentro , Alto do Palácio , 30 May 1991, J. R . Pirani et al. CFSC 12328 ( SPF, UEC); ibid., 1300 m, 8 June 2002, J. R . Pirani et al. 5074 ( SPF, UEC); ibid., 19°15’37.7”S, 43°31’58.5”W, 1350 m, 12 July 2009, B . Loeuille et al. 507 ( SPF) .

Figures

FIGURE 20. Hololepis pedunculata. A.Head.Lychnocephalus sellowii. B. Inflorescence.C. Habit.L.humillimus. D.Habit.L.tomentosus. E. Habit. L. mellobarretoi. F. Inflorescence. A. by P.M. Gonella. B.–C., E.–F. by B. Loeuille. D. by W. Milliken.