Piptolepis schultziana Loeuille & D.J.N.Hind

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

12. Piptolepis schultziana Loeuille & D.J.N.Hind in Loeuille et al. (2012b: 12). Type:— BRAZIL. Minas Gerais: Congonhas do Norte, Fazenda Imbaúbas , 1250 m, 18°56’14.8”S, 43°41’6.1”W, 20 January 2007, B. Loeuille et al. 76 (holotype: SPF [ SPF211000 ]; isotype: K [ K001092363 ]) .

Distribution and habitat: — Brazil (Minas Gerais, known only from the northern and southwestern portions of the Serra do Cipó). Campo rupestre; 850–1350 m.

Taxonomic notes: —Similar to Piptolepis campestris by the shape and size of leaves, but the adaxial surface of P. schultziana is glabrescent, shiny and green (vs. velutinous to subsericeous and silverish canescent). Also resembling P. buxoides , but the latter species has narrower leaves (3–4 mm vs. 4–7 mm) and fewer florets per capitulum (12–13 vs. 17–29).

Representative specimens: — BRAZIL. Minas Gerais: Congonhas do Norte, estrada para Santana do Riacho , 18°56’S, 43°41’W, 1200 m, 3 March 1998, J. R . Pirani et al. 4179 ( K, SPF); Santana do Pirapama, Distrito de São José da Cachoeira , Serra da Lapa , trilha do João Carrinho, 19°02’52.8”S, 43°44’19.3”W, 756–1080 m., 18 February 2007, V. C . Souza et al. 32693 ( BHCB, ESA, K, SPF); Santana do Riacho , Lapinha, elevações imediatamente a nordeste de Lapinha, nas nascentes do córrego do Boqueirão, trilha para o alto do paredão, 19°06’21.2”S, 43°40’32”W, 1315 m, 22 April 2006, B . Loeuille et al. 20 ( K, SPF, US).

XVII. Prestelia Schultz-Bipontinus (1864: 73) . Type:— Prestelia eriopus Schultz-Bipontinus (1864: 73) .

( Fig. 34 B , 37 , 38 )

Caulirosulas; stem unbranched, short and straight. Indumentum tomentose to lanate, composed of 3- to 5-armed trichomes, sometimes inverted Y-shaped and unbranched trichomes. Leaves in rosette, sessile, with a semi-amplexicaul sheath closely imbricated and appressed, tightly surrounding the stem, blade coriaceous, discolorous or concolorous, margin entire, flat or revolute, venation a brochidodromous-acrodromous mixed pattern. Inflorescence an axillary, pedunculate, syncephalium (second-order). Capitulum sessile. Involucre campanulate or cylindrical; phyllaries 3–4- seriate, weakly imbricate, persistent, pubescent; receptacle flat, areolate. Florets 2–10; corolla purple, tube longer than limb; corolla lobes glabrous or pubescent; anthers calcarate; style lacking basal node. Cypsela cylindrical or turbinate, glabrous; carpopodium inconspicuous; pappus 2–3-seriate, persistent, setose, stramineous or reddish, setae bases wider, outer series shorter than inner series, inner series straight. Chromosome number: unknown.

Taxonomic notes: — A genus of three species from the southern portion of Espinhaço Range of mountains in Minas Gerais, Brazil. The following combination of characters is diagnostic: caulirosula habit, revolute leaves, peduculate syncephalium and persistent pappus .

Figures

FIGURE 34. Geographic distribution of A. Piptolepis and B. Prestelia.

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 38. Holotype of Prestelia espeletoidea Loeuille, Semir & Pirani (SPF221800).