Prestelia purpurascens (Glaz. ex Oliver) 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

3. Prestelia purpurascens (Glaz. ex Oliver) Loeuille, Semir & Pirani , comb. nov. Eremanthus purpurascens Glaz. ex Oliver (1894b : t. 2282). Type:— BRAZIL. Minas Gerais: Serra do Cipó près Congonha da Serra , 22 April 1893, A.F.M. Glaziou 19464 (lectotype: K e! [ K000497162 ], designated here; isolectotypes: BR e! [ BR0000005523641 ], C e! [ C10007793 ], P [ P00683163 , P00683164 , P00683166 ]) ( Fig. 37 F–G ).

Distribution and habitat: — Brazil (Minas Gerais, apparently endemic to the northern portion of the Serra do Cipó.). Campo rupestre; 1000–1300 m.

Taxonomic notes: —A rarely collected species. Easily recognized by its lanceolate to oblong-spathulate leaves with densely lanate adaxial surface (becoming glabrescent with age). Resembling Prestelia eriopus : see that species for a discussion of the differences.

Representative specimens: — BRAZIL. Minas Gerais: Congonhas do Norte , estrada para a Serra Talhada, ramo vicinal à esquerda da estrada para Gouveia, 17 June 2000, P . Fiaschi & F. N . Costa 305 ( SPF). Santana do Pirapama, Vale do Soberbo , trilha na cabeceira do vale, subindo a serra a oeste, 19°03’12”S, 43°43’22”W, 1139 m, 14 June 2009, L . Echternacht & T. V . Barros 2049 ( BHCB) .

XVIII. Proteopsis Mart. & Zucc. ex Schultz-Bipontinus (1863: 378) . Type:— Proteopsis argentea Mart. & Zucc. ex Schultz-Bipontinus (1863: 378) .

( Fig. 39 A , 40 , 41 )

Caulirosulas; stem unbranched, short, straight. Indumentum sericeous, composed of unbranched trichomes. Leaves in rosette or pseudo-rosette, sessile or subsessile, with an amplexicaul sheath, closely imbricated and appressed, tightly surrounding the stem, blade coriaceous, concolorous or discolorous, margins entire, flat (not revolute), actinodromous or eucamptodromous venation. Inflorescence an axillary, pedunculate, solitary pseudoglomerule of capitula with foliaceous subinvolucral bracts. Capitulum pedunculate. Involucre campanulate; phyllaries 5–10-seriate, strongly imbricate, persistent, glabrous, with spiny appendages; receptacle fimbrillate. Florets 80–140; corolla purple, tube longer than limb; corolla lobes glabrous or pubescent; anthers calcarate; style lacking basal node. Cypsela cylindrical, glabrous or pubescent; carpopodium inconspicuous; pappus uniseriate or biseriate, caducous, paleaceous, twisted, stramineous, setae bases wider. Chromosome number: unknown.

Taxonomic notes: — A genus of two species from the campos rupestres of the Espinhaço Range of mountains in Minas Gerais State, Brazil. Proteopsis is easily set apart from the other caulirosulate genera by the phyllaries with spiny appendages .

Figures

FIGURE 37. Prestelia eriopus. A. Habit. B. Syncephalium. C. Detail of habit. P. espeletoidea. D. Habit. E. Rosette of leaves and pedunculate syncephalia. P. purpurascens. F. Habit. G. Syncephalium. A.–B. by M. Paciencia. C. by G. Ceccantini. D.–E. by M.M.T. Cota. F–G. by L. Echternacht.

FIGURE 39. Geographic distribution of A. Proteopsis and B. Vinicia.

FIGURE 40. Proteopsis argentea. A. Detail of habit. B. Habit. C. Pseudoglomerule. P. hermogenesii. D. Habit. E. Pseudoglomerules. F. Habit. G. Peduncle and pseudoglomerule. A. by G. Ceccantini. B.–C. by B. Loeuille. D.–E. by C.M. Siniscalchi. F.–G. by M.M. Saavedra.

FIGURE 41. Holotype of Proteopsis hermogenesii Loeuille, Semir & Pirani (SPF221700).