Maschalostachys mellosilvae Loeuille & Roque (2017: 42)

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

2. Maschalostachys mellosilvae Loeuille & Roque (2017: 42) . Type:— BRAZIL. Minas Gerais: Rio Pardo de Minas , estrada Serranópolis-Rio Pardo, trecho da Serra Geral, Serra das Poções, 15°58’06”S, 42°49’09”W, 860 m, 13 May 1998, J.R. Pirani et al. 4298 (holotype: SPF [ SPF131088 ]; isotypes: K e! [ K000997555 , K000997556 ], NY [ NY00863123 ]).

Distribution and habitat: — Brazil ( Bahia , Minas Gerais). Caatinga rupestre; 850–1100 m.

Taxonomic Notes: —An endemic species of the caatinga rupestre areas in northern Minas Gerais and southern Bahia . Differences with Maschalostachys markgrafii are discussed under that species.

Representative specimens: — BRAZIL. Bahia : Licínio de Almeida, Garimpo dos Areiões , 14°32’29.6”S, 42°32’11.6”W, 863 m, 14 July 2011, F.A. Santana et al. 21 (HUEFS). Minas Gerais: Grão Mogol, nascente do Rio Ventania, 12 June 1991, R. Mello-Silva et al. 450 (K, SPF, UEC); Mato Verde, estrada para Santo Antônio do Retiro, 15°23’13.9”S, 42°46’29” W, 1010 m, 9 March 2013, B. Loeuille & C.M. Siniscalchi 827 (SPF).

XIV. Minasia Robinson (1992b: 648) . Type:— Chresta alpestris Gardner (1842: 239) (= Minasia alpestris (Gardner) H. Rob. ).

( Fig. 32 A , 31 C–H )

Caulirosulas; stem unbranched, short, straight. Indumentum composed of T-shaped swollen trichomes with equal arms. Leaves in rosette, sessile or shortly petiolate, with a semi-amplexicaul sheath, closely imbricated and appressed, tightly surrounding the stem, blade coriaceous to chartaceous, concolorous, margin usually entire, flat (not revolute). Inflorescence an axillary, pedunculate, solitary glomerule of capitula or a panicle of glomerules of capitula, rarely a panicle of capitula. Capitulum petiolate or sessile. Involucre campanulate; phyllaries 5–6(–8)-seriate, strongly to weakly imbricate, persistent, pubescent, seldom glabrous; receptacle fimbrillate. Florets 20–50; corolla purple, tube longer than limb, rarely equal sized; corolla lobes pubescent; anthers calcarate and distinctly tailed; style lacking basal node. Cypsela cylindrical, pubescent; carpopodium prominent; pappus biseriate, setose, persistent, stramineous to reddish, outer series shorter than inner series, inner series straight, setae apices clavate. Chromosome number: n = 17 ( M. ramosa ).

Taxonomic notes: —A genus of seven species endemic of the campos rupestres of the Espinhaço Range of mountains (Minas Gerais State). This is a monophyletic group having a tailed anther base as a synapomorphy. The combination of the caulirosulan habit, T-shaped swollen trichomes, a prominent carpopodium and biseriate setose pappus is diagnostic of the genus.

Figures

FIGURE 31. Maschalostachys markgrafii. A. Syncephalium. B. Habit. Minasia alpestris C. Habit. D. Glomerule of heads. M. pereirae. E. Habit. F. Glomerule of heads. M. ramosa. G. Habit. M. scapigera H. Glomerule of heads. A.–D., G. by B. Loeuille. E.–F. by C.M. Siniscalchi. H. by I.M. Franco.

FIGURE 32. Geographic distribution of A. Minasia and B. Paralychnophora.