Forsteronia pubescens A. DC., Prodr.

Moura, Edweslley Otaviano de, de Sousa, Valdeci Fontes, Soares, Arthur de Souza & Versieux, Leonardo M., 2018, Private environmental consultancy reveals five genera and ten species of angiosperms new to Rio Grande do Norte state, northeastern Brazil, Check List 14 (2), pp. 439-451 : 445-447

Forsteronia pubescens A. DC., Prodr. 8: 436. 1844.

Figure 4C

Liana. Leaf blades 3.1–9.5 × 2.2–5.4 cm, elliptic, oblong, chartaceous, apex acuminate, base obtuse to rounded, pilose on both surfaces. Inflorescence thyrsiform, terminal; peduncle 0.5–1.2 cm long; bracts 1 mm long, ovate to lanceolate, pubescent. Flowers 3–5 mm long; pedicels 1–2 mm long; calyx-lobes 1–1.5 mm long, ovate, acute apex; corolla-lobes 3–4 mm long, white, oblong; stamen filaments 0.2–0.3 mm long, connate and agglutinated to the style, anthers wholly exserted. Follicles 15218 cm long, parallels, submoniliforms.

Forsteronia pubescens occurs in Peru, Bolivia, Paraguay, Argentina, and Brazil ( Kinoshita et al. 2005). In Brazil, it is reported in Bahia, Ceará, Distrito Federal, Goiás, Mato Grosso do Sul, Mato Grosso, Paraná and in the states of Southeast Region ( Koch et al. 2015). In Rio Grande do Norte it was collected in areas of shrubby-arboreal Caatinga with stony soil. This species is resembles Forsteronia thyrsoidea (Vell.) Mull. Arg. in vegetative traits. However, F. pubescens differs from this mainly by the color flowers (white vs greenish-yellow), bracts shape (ovate to lanceolate vs lanceolate to linearlanceolate), calyx-lobes shape (ovate vs lanceolate), follicles position and shape (parallel and submoniliforms vs divaricate and cylindrical), and longer follicles (15–28 vs 14–15 cm). Also, it differs from Forsteronia rufa Mull. Arg. by calyx-lobes shape (ovate vs lanceolate), anthers position (exserted vs inserted), and follicle shape (submoniliforms vs moniliforms); from F. velloziana (A.DC.) Woodson it differs by calyx-lobes shape (ovate vs lanceolate), anthers position (exserted vs partially exserted), follicles position (parallel vs divaricate), and smaller follicles (15–28 vs 5–10 cm).

Specimens examined. Brazil. Rio Grande do Norte. Equador: Serra das Queimadas, área de extração de Caulim e para instalação do Complexo Eólico Santapape, 06°51′36″ S, 036°40′26″ W, fl., 14 August 2015, Moura E.O. et al. 432 (UFRN 19579).

Additional material. Ceará. Castro 670, 03°43′02″ S, 038°32′35″ W ( EAC 27428), 842, 03°33′44″ S, 041° 05′32″ W ( EAC 30035); Gardner 1761, 05°24′10″ S,

039°19′31″ W ( G 169308, 169309, 169310, 169311); Guedes 547, 03°34′12″ S, 040°28′48″ W ( NYBG _ BR 1166964); Lima 2407, 03°53′27″ S, 038°41′08″ W ( PEUFR 425); Loiola 1751, 04°31′16″ S, 041°27′22″ W ( EAC 1751), 2229, 03°49′28″ S, 040°53′31″ W ( EAC 55625). It may also occur in Paraíba (awaiting confirmation of herbarium material S. C. - EAN 2043).

Asteraceae

Dasyphyllum sprengelianum (Gardner) Cabrera, Revista Mus. La Plata, Secc. Bot. 9(38): 90. 1959.

Figure 3C

Erect shrub 1‒2 m high, branches glabrous, spinose, and geminate spines, straight, perpendicular to the branches. Leaf blades 2.5‒6 × 1.2‒2.2 cm, elliptic to lanceolateelliptic, subcoriaceous, glabrous, 3-nerved, acute at apex or sometimes obtuse, margin entire, attenuate at base. Capitula solitary, sessile; involucre ca 2 cm long, campanulate, involucral bracts forming 8‒10 whorls, margins ciliate, acute apex, external bracts ovate, internal bracts lanceolate, glabrous. Flowers yellow-light; tubular corolla ca 18 mm long, tube glabrous, lobes long setose. Cypselae 8–10 mm long, densely gray tomentose; pappus ca 15 mm long, cream colored.

Dasyphyllum sprengelianum was originally described by Gardner (1847) as Flotovia sprengeliana from speci- mens from southeastern Brazil. Its distribution ranges from Bolivia, Paraguay to Brazil ( Saavedra 2011). In Brazil, it is recorded from Bahia, Ceará, Pernambuco, Piauí, Rondônia, Tocantins, Distrito Federal, Goiás, Mato Grosso, Minas Gerais and São Paulo ( Saavedra 2015). In Rio Grande do Norte, Dasyphyllum sprengelianum was collected on shrubby Caatinga vegetation, growing in rocky soils. This species belongs to the subgenus Dasyphyllum section Macrocephala by having its 3- to 5-veined leaves from the base and anthers with a bilobed apical appendage. It resembles D. donianum (Gardner) Cabrera due to its subcoriaceous, glabrous, and shortly petiolate leaves, and by its bracts with hairy margins and densely villous abaxial surface. Dasyphyllum sprengelianum differs from D. donianum by the shorter spines on the branches (5–18 mm vs 20 mm long), the leaf blade acuminate at apex (vs obtuse and mucronate), and inner involucral bracts lanceolate (vs oblong-lanceolate).

Specimens examined. Brazil. Rio Grande do Norte. Equador: Serra das Queimadas, ca 10 km da sede municipal, área para implantação do Complexo Eólico Santapape, fl., fr. imat., 15 August 2015, Soares A.S. et al. 49 (UFRN 19535); Venha Ver: Serra de São José, 06°20′02″ S, 038°28′18″ W, 04 August 2010, Roque A.A. 838 (UFRN 10866).

Additional material. Ceará: Castro s.n., 07°14′03″ S, 039°24′34″ W ( EAC 25213); Cavalcanti 12, 07°14′03″ S, 039°24′34″ W ( EAC 20327), 237, 07°14′03″ S, 039° 24′34″ W ( EAC 21956), s.n., 07°14′03″ S, 039°24′

34″ W ( EAC 25793); Cotarelli 1782, 07°26′40″ S, 039°04′06″ W ( IPA 87874, HVASF 15529); Félix s.n., 07°14′03″ S, 039°24′34″ W ( EAC 18985); Fernandes s.n., 07°14′03″ S, 039°24′34″ W ( EAC 3783, 13975); Figueiredo s.n., 07°14′03″ S, 039°24′34″ W ( EAC 20044); Fontana 6274, 07°26′38″ S, 039°04′08″ W ( HUNEB 14112, HVASF 6550, IPA 87876), 8484, 07° 25′57″ S, 039°07′54″ W ( HUEFS 79674); Gardner 1749, 05°24′10″ S, 039°19′31″ W ( G 237609, 237610); Gurgel 2, 07°14′03″ S, 039°24′34″ W ( MOSS 4857); Lima 333, 07°14′03″ S, 039°24′34″ W ( IPA 49300); Lima-Verde 1497, 07°14′03″ S, 039°24′34″ W ( EAC 43183), 1566, 07°14′03″ S, 039°24′34″ W ( EAC 43184), 1580, 07°14′03″ S, 039°24′34″ W ( EAC 43185), 1657, 07°14′03″ S, 039°24′34″ W ( EAC 43186), 1930, 07° 14′03″ S, 039°24′34″ W ( EAC 43187), 2147, 07°14′03″ S, 039°24′34″ W ( EAC 43188), 2232, 07°14′03″ S, 039° 24′34″ W ( EAC 43189); Loiola 1372, 07°14′57″ S, 039° 29′40″ W ( EAC 49842); Mata 2241 , 07°16′27″ S, 039° 27′03″ W ( HUEFS 174523); Miranda 3410, 07°14′03″ S, 039°24′34″ W ( BHCB 77655, HST 9567, HUEFS 53780), 3430, 07°14′03″ S, 039°24′34″ W ( HST 9567, HUEFS 158958); Morais 127, 07°14′03″ S, 039°24′34″ W ( IPA 90839); Nunes s.n., 07°14′03″ S, 039°24′34″ W ( EAC 16566); Pinto 7, 07°16′52″ S, 039°27′13″ W ( ALCB 122257, EAC 59547); Silva 19, 07°14′03″ S, 039°24′34″ W ( EAC 42982), s.n., 07°18′40″ S, 039°18′15″ W ( IPA 88333); Sobrinho 144, 07°14′03″ S, 039°24′34″ W ( HST 1819, PEUFR 9334). Pernambuco: Alcântara 41, 08°37′23″ S, 037°09′21″ W ( HST 17293, HUEFS 171971); Andrade 252, 08°37′30″ S, 037°09′15″ W ( PEUFR 22628), 285, 08°37′30″ S, 037°09′15″ W ( PEUFR 22630); Andrade-Lima 58-3261, 07°30′43″ S, 039°43′27″ W ( IPA 11929, SP 211092), 61-3991, 08°37′23″ S, 037° 09′21″ W ( IPA 12913); Cano 730, 08°35′18″ S, 037° 14′28″ W ( HUEFS 137748, IPA 82386); Carvalho- Sobrinho 1781, 09°04′04″ S, 038°08′04″ W ( HVASF 2824); Cavalcanti 528, 07°37′51″ S, 039°33′04″ W ( EAC 28393); Costa-Lima 1864, 08°00′00″ S, 037°31′27″ W ( HTSA 6434), 1941, 08°00′37″ S, 037°43′06″ W ( HUEFS 220640); Farias-Fonseca 272, 08°37′23″ S, 037°09′21″ W ( UFP 75154); Fontana 6261, 9°04′52″ S, 038°08′03″ W ( HUNEB 14113, HVASF 6474, IPA 87878), 7013, 06°59′18″ S, 038°27′37″ W ( HUNEB 14107, HVASF 9316, IPA 87877), 9644, 07°37′51″ S, 039°33′04″ W ( HUEFS 226994); Lima 435, 07°30′43″ S, 039°43′27″ W ( IPA 49249); Lisboa s.n., 07°30′43″ S, 039°43′27″ W ( EAC 18023); Lopes s.n., 08°37′23″ S, 037°09′21″ W ( IPA 60529, UFP 33267); Mascena 54 C, 07°27′51″ S, 039°28′13″ W ( EAC 59698); Oliveira 114, 08°34′54″ S, 037°14′25″ W ( HVASF 14210), 5947, 08°00′36″ S, 037°43′09″ W ( HUEFS 220702); Rodal 290, 08°37′00″ S, 037°10′00″ W ( PEUFR 17328), 445, 08°37′00″ S, 037°10′00″ W ( PEUFR 18269); Sales 364, 08°37′00″ S, 037°10′00″ W ( PEUFR 18265); Saraiva 197, 07°30′43″ S, 039°43′27″ W ( EAC 57560, IPA 89717, HST 20139); Silva 771, 08°37′00″ S, 037°10′00″ W ( PEUFR 17774); Silveira s.n., 07°37′51″ S, 039°33′04″ W ( EAC 23056,

40398, 40399). It may also occur in Paraíba (awaiting confirmation of herbarium material Fontana 8619 - RB 1145629)

Combretaceae