Baccharis curitybensis Heering ex Malme (1933: 69)

Heiden, Gustavo & Pirani, José Rubens, 2016, Taxonomy of Baccharis subgen. Tarchonanthoides (Asteraceae: Astereae: Baccharidinae), a group from the southeastern South American grasslands and savannas, Phytotaxa 241 (1), pp. 448-450 : 448-450

2. Baccharis curitybensis Heering ex Malme (1933: 69) . Lanugothamnus curitybensis (Heering ex Malme) Deble (2012: 16) . Type:— BRAZIL. Paraná: Curitiba, 20 October 1908, ♂, P. K. H. Dusén 6906 (lectotype S! (10-22254), first-step lectotype designated by Barroso 1976: 97, second-step lectotype designated by Heiden & Pirani (2012a: 47); isolectotypes: F! (0049682F), G! (00222589), GH! (00003932), K! (000221944), LD (1222629) photo!, MO! (797734), NY! (00162224), US! (00129284)).—Remaining syntypes: BRAZIL. Paraná: Balsa Nova; São Luiz do Purunã, Serrinha, 14 October 1909, ♂, P. K. H. Dusén 8539 (syntype S! (10-22255)). São Paulo: Serra da Bocaina, ♂, A. F. M. Glaziou 7715 (syntype S! (S10-22253) = B. tarchonanthoides DC. ).

Illustrations: — Barroso (1976: 221, 224); Malme (1933: Tab. V); Malagarriga (1973: fig. 16a; 1977: dessin 68). Fig. 5 , 6 .

Shrubs 0.5–1.5 m tall, erect; fertile shoots virgate, dichotomously or trichotomously branched. Stems brown, shoots pilose. Leaves 1–5 cm long, 0.7–1.5 cm wide, evenly distributed along the branches; petioles 2–8 mm long; leaf blade indurate, oblanceolate, elliptic to ovate, apex acute to obtuse, rarely mucronulate, base attenuate to cuneate, margins entire or rarely with 1–5 pairs of teeth, flat; leaves basally 3-nerved, acrodromous imperfect, with a secondary semicraspedodromous, rarely craspedodromous reticulum, adaxial surface with a caducous villose indumentum, abaxial surface with a persistent felted indumentum. Capitulescences terminal; corymbs 1.2–10 cm long, 1.4–12 cm wide. Capitula sessile to pedunculate; peduncles 0–1.8 cm long, pilose. Male capitula 4–5.9 mm long; involucre 3.8–4.3 mm long, 5.4–8.9 mm wide, cup-shaped to campanulate; phyllaries 3–4-seriate, light green or stramineous, outer and median ovate, inner linear-lanceolate, margins entire, apex acute to rounded, pilose; clinanthium convex, glabrous or with flagellate trichomes; florets 43–92; corollas 3–3.4 mm long, tube 1.9–2.5 mm long, throat 0.7–0.8 mm, lobes 0.6–1 mm long, biseriate hairs on throat; anthers fulvous 3–3.2 mm long; style 3–3.5 mm long; ovary abortive, 0.2–0.4 mm long, 0.1–0.2 mm wide, with twin trichomes; pappus 3–3.4 mm long, bristles 28–50, not twisted, apically broadened. Female capitula 5.1–7.5 mm long; involucre 5–6.2 mm long, 5.5–8.2 mm wide, cup-shaped to campanulate; phyllaries 4–5-seriate, light green or stramineous, outer ones ovate, median oblong, inner ones linear-lanceolate, margins entire, apex acute to rounded, pilose; clinanthium concavous, nearly glabrous, with scarce biseriate glandular trichomes; florets 40–62; corollas 2.6–3 mm long; style 3–3.4 mm long, branches 0.4–0.5 mm long. Cypselae 1.3–1.5 mm long, 0.3–0.5 mm wide, light brown, puberulous, evenly covered by twin trichomes, oblong, 8–10-ribbed; pappus 3.6–4 mm long; bristles 36–40, slightly broadened apically. Chromosome number unknown.

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HEIDEN & PIRANI

Etymology: —The specific epithet refers to the type locality in Curitiba, Paraná, Brazil.

Distribution and habitat:— Baccharis curitybensis occurs in southeastern (Minas Gerais and São Paulo states) and southern Brazil (Paraná, Santa Catarina and Rio Grande do Sul states), known from several disjunct locations along the highlands of Serra da Mantiqueira, Planalto Paulista, Serra da Bocaina (a portion of Serra do Mar range), Planalto de Curitiba, Planalto de Ponta Grossa, and Serra Geral, at elevations between 900 and 1250 m a.s.l. (Fig. 4). It forms sparse populations in open and generally dry vegetation types, growing in patches of high altitude tropical and subtropical highland grasslands occurring in between the Ombrophilous Dense Forest and Ombrophilous Mixed Forest (with Araucaria ), along the Atlantic and Paranense provinces.

TAXONOMY OF BACCHARIS SUBGEN. TARCHONANTHOIDES

Phytotaxa 241 (1) © 2016 Magnolia Press • 11

Phenology:— Fertile specimens have been collected from early September to early June, with the peak of flowering between November and December.

Conservation status: —Near threatened (NT). It is known to occur inside some nature reserves and in few non-protected primary and secondary areas. Some previously recorded populations along the naturally fragmented range of distribution became locally extinct as habitat quality recently decreased and habitat loss increased due to agricultural and forestry expansion. Regional state assessments are encouraged with the aim to evaluate the conservation and keep the great variability found in populations preserved.

Vernacular names: —Vassourinha-do-campo (Heiden & Iganci 1970, 1971).

Comments:— Baccharis curitybensis is seldom misidentified as B. tarchonanthoides , and it is not rare to find

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HEIDEN & PIRANI both species growing sympatrically. Leaf shape and teeth show a great variability in the two species, but the corymbose capitulescences help to differentiate B. curitybensis from the paniculate B. tarchonanthoides straightforwardly.

Even though the capitulescences of Glaziou 7715, a syntype of B. curitybensis , are immature, they show characters typical of B. tarchonanthoides . This specimen has 3-nerved leaves, as commonly found in B. curitybensis , however 3-nerved leaves, though rare, can also be found within B. tarchonanthoides .

Specimens examined:— BRAZIL. MINAS GERAIS: Itamonte, Campo Redondo, 1401 m, 8 November 2007, ♀, P. L . Viana , N.F. O. Mota & L.E. Andrade 3205 ( BHCB); Parque Estadual do Papagaio , 2152 m, 7 November 2007, ♀, N. F. O . Mota , P.L. Viana & L.E. Andrade 998 ( BHCB). Passa Quatro, Serra Fina, Campo do Muro , 23 November 2006, ♀, L . D. Meireles & J. A . Nunes 2620 ( BHCB, UEC); ♂, L . D. Meireles & J. A . Nunes 2621 ( BHCB, UEC); ♀, L . D. Meireles & J. A . Nunes 2629 ( BHCB, RB, UEC); ♂, L . D. Meireles & J. A . Nunes 2634 ( RB, UEC). PARANÁ: Almirante Tamandaré , 9 October 1975, ♂, G . Hatschbach 37325 ( C, MBM). Balsa Nova, São luiz do Purunã , 28 October 1996, ♂, O. S . Ribas & M. F . Luz 1534 ( MBM, US); 14 January 1965, ♀, L. B . Smith, R. M . Klein & G . Hatschbach 14440 ( HBR, NY, RB, US); Escarpa Devoniana , 18 September 1989, ♂, L . Dombrowski 13953 ( MBM). Bocaiúva do Sul, Capivari , 16 October 1949, ♂, G . Hatschbach 1545 ( ICN, MBM, PACA, S, US); Salto , 12 November 1959, ♂, G . Hatschbach 6474 ( ICN, LIL, MBM). Campina Grande do Sul , 22 October 1961, ♂, G . Hatschbach 8501 ( MBM, RB); 20 November 1965, ♂ & ♀, G . Hatschbach 13147 ( F, K, MBM, NY, P, UPCB, US). Curitiba , 16 December 1947, ♀, G . Tessman s.n. ( MBM 264282 , RB65128 ). Jaguariaiva, Fazenda Samambaia, 14 October 2006, ♀, E . Barbosa, J.M. Silva & E.M. Cunha 1672 ( MBM). Piraí do Sul, Joaquim Murtinho , 17 November 1970, ♂, G . Hatschbach & O . Guimarães 25423 ( CTES, MBM, MO, UPCB). Palmeira, Fazenda Santa Rita , November 1979, ♂, L . Dombrowski 13500 ( MBM); Recanto dos Papagaios, 11 October 1978, ♂, L . Dombrowski 9812 ( MBM). Ponta Grossa, rio Pitangui , ♂ & ♀, A . Cervi & G . Hatschbach 3005 ( GB, MBM, S, SPSF). 9 October 1989, Passo do Pupo , 12 October 1995, ♂, C. B . Poliquesi & J . Cordeiro 448 ( E, ESA, G, HUEFS, MBM, MO, NY, PEL, UB). São José dos Pinhais, Rio Pequeno , 900 m, 5 November 1969, ♂, G . Hatschbach 22813 ( MBM, NY, UPCB); 2 November 2004, J. M . Silva 4200 ( MBM). RIO GRANDE DO SUL: Cambará do Sul, Cânion Fortaleza , September 2003, ♂, M . Grings 1280 ( ICN); Serra da Pedra , February 1948, st. B . Rambo 36314 ( PACA). SANTA CATARINA: Bom Jardim da Serra, Curral Falso , 1500 m, 11 December 1958, ♂, R . Reitz & R. M . Klein 7800 ( B, G, HBR, NY, RB, US). Campo Alegre, Iquererim , 8 November 1956, ♀, L. B . Smith & R. M . Klein 7416 ( HBR, RB, US); 9–10 December 1956, ♀, L. B . Smith & R. M . Klein 8551 ( HBR, RB, US); 18 October 1957, ♂, R . Reitz & R. M . Klein 5308 ( HBR, NY, P, US). Garuva, Serra do Quriri , 16 October 2004, ♂, J. M . Silva, O.S. Ribas & M.R. Bornschein 4115 ( CTES, MBM, RB, SP). Rancho Queimado, Serra da Boa Vista , 1014 m, 14 October 2012, ♂, G . Heiden & J. R. V . Iganci 1970 ( SPF); ♀, G . Heiden & J. R. V . Iganci 1971 ( SPF). SÃO PAULO: Campos do Jordão , 9 June 1992, ♀, A . Sciamarelli s.n. ( UEC 26543 ); 22 October 1938, ♂, G . Hashimoto 5 ( RB); 17 November 1940, ♂, G . Hashimoto 391 ( SP); September 1945, J. E . Leite 3626 ( LIL); 23 October 1974, ♂, J . Mattos 15931 ( SP); 28 September 1976, ♀, P . Davis et al. 2964 ( RB); Capivari , 18 November 2011, 1568, ♂, G . Heiden et al. 1816 ( SPF); ♀, G . Heiden et al. 1817 ( SPF); Mata do Auditório , 10 June 1992, ♀, T. C . Sposito s.n. ( UEC 26429 ); ♂, T. C . Sposito s.n. ( UEC 26430 ); Parque Estadual dos Mananciais, 6 September 1994, ♂, M. J . Robim & R . Evangelista 504 ( MBM, SPSF, UEC); 1 December 2011, ♀, G . Heiden, G . Sancho & J. M . Bonifacino 1818 ( SPF); Pedra do Elefante , ♂, M. J . Robim & R . Evangelista 797 ( SPSF); 26 July 1991, ♂, S . Xavier & E. Caetano 185 ( SPSF); 15 October 1992, ♂, S . Xavier , A. Rodrigues & A . Costa 302 ( SPSF); São José dos Alpes, 22 September 1975, ♂ & ♀, H. P . Bautista & G. M . Barroso 214 ( JE, RB, SPF); 1 October 1995, ♂, J. R . Guillaumon s.n. ( MBM, SPSF); Umuarama , 22 October 1949, ♂, E . Kühn & M . Kuhlmann 2059 ( R, RB, SP, SPF, US); Vila Matilde , 19 October 1975, ♂, M . Sakane 330 ( SP). Queluz, Serra Fina , Pedra a Mina, 2550–2660 m, ♂, G. J . Shepherd et al. 97-40 ( BHCB, UEC). São José do Barreiro , 30 December 1998, ♀, L . Freitas & I. S. M . Gajardo 498 ( UEC); 23 December 1999, ♂, L . Freitas 733 ( K, UEC); Serra da Bocaina, 9 December 1952, ♂, Markgraf & Apparicio 10301 ( G, RB). São Paulo, Vila Emma , December 1932, ♂, A. C . Brade 12192 ( R) .

Figures

FIGURE 5. Baccharis curitybensis. A. Fertile shoot of pistillate plant. B. Leaves. C. Portion of pilose peduncle. D. Male capitulum. E. Phyllaries of male capitulum (outer to inner). F. Male floret. G. Female capitulum. H. Phyllaries of female capitulum (outer to inner). I. Female floret. J. Corolla and style of female floret. K. Cypsela. A, C, G–K: Heiden 1971 (SPF). B (from left to right): Silva 4200 (MBM); Robim 504 (MBM); Hatschbach 6474 (MBM); Barbosa 1672 (MBM); Heiden 1971 (SPF); Hatschbach 22813 (MBM); Silva 4115 (MBM). D–F: Heiden 1970 (SPF). Illustration by João Iganci.

FIGURE 6. Baccharis curitybensis. A. Habitat in dry high altitude tropical grasslands at Capivari, Campos do Jordão, São Paulo, Brazil. B. Habit. C. Male capitulescences. D. Female capitulescence. Photos by G. Heiden.