Hornschuchia myrtillus Nees

Vilela, Lucas & Lopes, Jenifer De Carvalho, 2022, Hornschuchia (Annonaceae), an endemic and threatened genus from the Brazilian Atlantic Forest, European Journal of Taxonomy 828, pp. 75-108 : 94-96

publication ID

https://doi.org/10.5852/ejt.2022.828.1859

DOI

https://doi.org/10.5281/zenodo.6823782

persistent identifier

https://treatment.plazi.org/id/03C887E4-0111-FFD7-FDBE-FDAEFDED7878

treatment provided by

Felipe

scientific name

Hornschuchia myrtillus Nees
status

 

Hornschuchia myrtillus Nees

Fig. 5 View Fig

Flora 4 (1): 302 ( Nees 1821).

Type: BRAZIL – Bahia • “ Ilhéus ”, “Str. v. C. F. B.” [“Strasse des Capitains Filisberto”, via Felisbertia]; Nov. 1816; M.A.P. z. Wied-Neuwied s.n.; holotype: BR [ BR0000006592400 ]!; isotypes: BR [ BR0000006593711 ]! (specimen from the herbarium collection of Martius), MEL [ MEL2123974 View Materials ]!, NY [ NY00026101 ]! (fragment) .

Material examined

BRAZIL – Bahia •“ Almadina: Rodovia de Almadina para Ibitupã, ca 20 km.Fazenda São Roque, ca 10 km da entrada do ramal ”; 14°38′27″ S, 39°42′47″ W; 12 Mar. 2005; P. Fiaschi 2743; CEPEC [ CEPEC00104051 View Materials ]!, MBM [ MBM321118 View Materials ]!, NY [ NY00886759 ]!, RB [ RB00484207 ]!, SPF GoogleMaps ! • ibid.; 14°38′28″ S, 39°42′47″ W; 1 Feb. 2005; J.G. Jardim 4508; CEPEC [ CEPEC00112902 View Materials ]!, RB [ RB00495869 ] GoogleMaps ! • “ Ilhéus ”, “ In sylvis udis ad fl. da Caxoeira et Ferradas in Ilheos . Provinciae Bahiensis ”; Dec. 1818; C.F.P. von Martius s.n.; M [ M0240085 ]!, M [ M0240087 ]!, M [ M0240086 ]! (label “Provinciae Rio d. J.” probably an error, see Johnson & Murray (1995)) “ Itamarajú, Rodovia para São Paulinho ”; [16°56′03.2″ S, 39°34′05.6″ W]; 6 Apr. 1971; T.S. Santos 1569; CEPEC [ CEPEC00006771 View Materials ]!, NY [ NY00395814 ] GoogleMaps ! • “ Itanhém, Estrada Itanhaém a Batinga, ca 16 km. Ramal a direita, dando acesso à Fazenda Pedra Grande, de Prop. de Etevaldo Rezende da Silva ”; 17°8′17″ S, 40°25′34″ W; 29 Dec. 2004; A.M. Amorim 4611; SPF!, CEPEC [ CEPEC00106981 View Materials ]!, NY [ NY01873567 ] GoogleMaps ! • “ Prado, Km 21 da Rodovia Itamaraju-Prado ”; 17 Feb. 1994; J.R Pirani 2988; SPF!, NY [ NY00395815 ] ! • ibid.; 17°10′ S, 39°24′ W; 9 Feb. 1994; J.A. Kallunki et al. 465; CEPEC [ CEPEC00060979 View Materials ]!, K [ K001191165 ]!, NY [ NY00395779 ]!, SPF GoogleMaps ! • ibid.; 17°9′41″ S, 39°23′57″ W; alt. 50 m; 19 Jul. 1996; R. Mello-Silva et al. 1171; SPF GoogleMaps ! • “ Rodovia BA-284, trecho Prado/Itamaraju, ca 65 Km a NW de Prado ”; [17°00′29.8″ S, 39°36′18.2″ W]; 18 Oct. 1978; S.A. Mori 10658; CEPEC [ CEPEC00014741 View Materials ] GoogleMaps ! • “ Santo Antônio de Jesus ” ( Varzedo *), “ Rodovia para São Miguel das Matas e Amargosa, 7km do trevo com a BR 101 ”; [12°58′32.1″ S, 39°20′30.4″]; alt. 40 m; 30 Jan. 1993; J.R. Pirani et al. 2701; NY [ NY00395812 ]!, NY [ NY00395811 ]!, SPF ! • “ São Miguel das Matas, Fazenda Rio Vermelho ”; [12°58′55.9″ S, 39°28′22.0″ W]; 25 Jun. 2003; G. Hatschbach 75700; MBM [ MBM284437 View Materials ] GoogleMaps ! • “ Minas Gerais ” (Bahia*), “ Salto da Divisa ” ( Itagimirim *), “ Estação Repetidora de Salto da Divisa , 1.9 km a S de Salto da Divisa/Itagimirim, 7.1Km a E de Salto da Divisa ”; 16°01′43″ S, 39°55′17″ W; alt. 495 m; 31 Jan. 2004; W.W. Thomas 13723; CEPEC [ CEPEC00103254 View Materials ]!, NY [ NY01091758 ] GoogleMaps !. – Espírito Santo • “ Linhares, BR-101, Km. 122, N of Linhares, Reserva Florestal do CVRD, Estrada Farinha Seca, Km 3, S side of road. ”; ca 19°20′ S, 40°3′ W; 20 Jan. 1993; J.A. Kallunki 356; MBM [ MBM181236 View Materials ]!, NY [ NY00395813 ]!, SPF GoogleMaps ! • ibid., “ RFL-001/80 bloco E, trat.02 ”; 14 Feb. 2007; G.S. Siqueira 307; SPF GoogleMaps ! • ibid.; 19°11′ S, 39°54′ W; alt. 30 m; 8 May 2009; P.J.M. Maas 9853; NY [ NY02699054 ]!, SPF GoogleMaps ! • ibid.; 19°11′07.3″ S, 39°55′23.8″ W; alt. 23 m; 25 Nov. 2009; A. Lobão et al. 1531; SAMES [ SAMES00219 ]!, SPF!, VIES [ VIES024741 View Materials ] GoogleMaps ! • ibid.; 27 Dec. 1999; D.A. Folli 3540; SPF!, RB [ RB00484652 ] GoogleMaps ! • ibid.; 19°11′10.9″ S, 39°54′50.3″ W; alt. 16 m; 3 Dec. 2010; J.C. Lopes et al. 122; MBML [ MBML049129 View Materials ]!, RB [ RB00755525 ]!, SPF GoogleMaps ! • ibid.; 19°11′12.1″ S, 39°54′53.4″ W; alt. 32 m; 3 Dec. 2010; J.C. Lopes et al. 147; RB [ RB00755518 ]!, SPF GoogleMaps ! • ibid.; 19°11′13.3″ S, 39°54′49.6″ W; alt. 44 m; 3 Dec. 2010; J.C. Lopes et al. 364; SPF GoogleMaps ! • “ Pinheiros, Reserva Biológica Córrego do Veado ”; 18°22′12″ S, 40°8′39″ W; 24 Jan. 2011; A.O. Giaretta 916; SAMES [ SAMES01774 ] GoogleMaps ! • ibid.; 18°22′12″ S, 40°8′39″ W; 18 Dec. 2010; T.L. Rocha 93; SAMES [ SAMES00220 ] GoogleMaps ! • ibid., “ Ponte do Paraju ”; alt. 72 m; 17 Jun. 2002; L.S. Leoni 5846; RB [ RB01178314 ]!, SPF GoogleMaps !.

Description

Shrubs or trees, 0.3–6 m tall. Leaves chartaceous, petiole 0.5–4 mm long, lamina 4.9–12.5 × 2–5 cm, narrowly elliptic to elliptic, oblanceolate to narrowly oblong, obovate or rarely lanceolate, adaxial surface glabrous, abaxial surface glabrous to glabrescent, adaxial surface glabrous, base asymmetric, acute, decurrent or cuneate, apex acuminate, acute, attenuate or obtuse, primary vein impressed adaxially and raised abaxially, 7–12 pairs of secondary veins, angles between primary and secondary veins 40– 60°. Inflorescence one-flowered, axillary, supra-axillary, terminal or 2–12-flowered, flagelliflorous, inflorescence branches ramified, 10–100 cm long, running near the soil, bracts persistent, 1.5–6.9 × 0.6–2.8 cm. Flowers with pedicel 7–37 mm long, flower buds 3–8 × 1–3 mm, cylindrical with obtuse apex, covered in trichomes. Sepals completely connate, calyx cupuliform, apex truncate, 1–3 × 1–4 mm, densely covered in trichomes. Petals linear, white, 7–14 mm long, glabrous to glabrescent at the apex and densely covered at the base in trichomes, stamens 6, 2–3.5 × 0.5 mm, carpels 3–4, 3.5–4 × 0.5 mm. Monocarps 1–2, fusiform to ellipsoid, 14–40 × 3–5 mm, glabrous to glabrescent, green in vivo, stipe 2–3 mm long, calyx persistent. Seeds 1–2, set of seeds with the same shape as the monocarp, fitting obliquely, 9–12 × 4–5.5 mm, with aril.

Distribution and habitat

Hornschuchia myrtillus occurs in Bahia and Espírito Santo, with a single collection close to the border between Minas Gerais and Bahia. In Bahia, it occurs in lowland tropical moist forest and in seasonal semideciduous forest ( Gouvêa et al. 1976; Thomas & Barbosa 2008), in Espírito Santo, in tabuleiro forest ( Peixoto et al. 2008; Fig. 5 View Fig ).

Phenology

Flowering from January to December, fruiting from February to December.

Conservation status

Vulnerable, B2ab(ii,iii) ( Moraes et al. 2020).

Notes

The type locality of H. myrtillus is the same as H. bryotrophe , see note under the latter.

The description of H. myrtillus has been updated ( Johnson & Murray 1995) to include information from the several new collections made in the last 27 years, such as plant size, variation in the inflorescence and fruit dimensions. The inflorescence in H. myrtillus can be either axillary, supra-axillary to terminal with one flower or flagelliflorous, inflorescence branched into axes 10–100 cm long, running near the soil, and 2–12-flowered. These two types of inflorescences have been found in the same individual ( Lopes & Mello-Silva 2014). When with single-flowered inflorescence, H. myrtillus is similar to H. alba , see note under the latter to differentiate the two species. The individuals with flagelliflory resemble H. polyantha . However, H. myrtillus has a calyx densely covered in trichomes (vs glabrescent) and inflorescence with persistent bracts (vs caducous bracts).

BR

Embrapa Agrobiology Diazothrophic Microbial Culture Collection

MEL

Museo Entomologico de Leon

NY

William and Lynda Steere Herbarium of the New York Botanical Garden

CEPEC

CEPEC, CEPLAC

MBM

San Jose State University, Museum of Birds and Mammals

RB

Jardim Botânico do Rio de Janeiro

SPF

Universidade de São Paulo

M

Botanische Staatssammlung München

K

Royal Botanic Gardens

VIES

Federal University of Espírito Santo

MBML

Museu de Biologia Mello Leitão