Campylocentrum ulaei Cogniaux (1906: 514)

Pessoa, Edlley & Alves, Marccus, 2018, Taxonomical revision of Campylocentrum sect. Campylocentrum (Orchidaceae, Vandeae, Angraecinae) in Brazil, Phytotaxa 362 (1), pp. 1-20 : 17

10. Campylocentrum ulaei Cogniaux (1906: 514) .

Type: — BRAZIL. Santa Catarina: Mauro Miller, Serra do Oratório, January 1890, E. Ule 1628 (lectotype here designed: BR! no. 997445, isolectotypes: AMES, photograph!, BR! no. 997444, HBG!). ( Fig. 7E–H , Fig. 6 )

Campylocentrum ulaei var. parviflorum Cogniaux (1906: 514) . syn. nov. Type: — BRAZIL. Rio de Janeiro: Teresópolis, June 1887, J. de Moura 59 (lectotype here designed: BR!).

Campylocentrum gracile Cogniaux (1906: 513) . syn. nov. Type: — BRAZIL. Minas Gerais: sine loco acurato, 1891, A. Glaziou 19895 (lectotype here designed: BR!, isolectotypes: C!, K!, P!).

Pendent herbs. Roots 0.9–1.0 mm diameter, cylindrical. Stem 0.8–25.0 cm long. Leaves 1.0–4.5 × 0.2–0.7 cm, oblong-elliptical, lobes acute. Inflorescences 2.0–11.0 cm long, lax, peduncle 0.6–2.0 cm long, minutely papillose; rachis 1.4– 9.0 cm long, minutely papillose; floral bracts 1.0–1.2 × 0.4–0.5 mm, deltoid, margin entire to minutely denticulate, the apex acute. Flowers 16–52 (per inflorescence), whitish-green, pedicellate ovary 1.2–1.9 mm long, minutely papillose; dorsal sepal 1.8–3.0 × 0.8–1.0 mm, elliptical to oblong, glabrous, 1-nerved, the apex obtuse to rounded; lateral sepals 1.8–3.6 × 0.6–0.8 mm, oblong, subfalcate, glabrous, 1-nerved, the apex obtuse; petals 1.8–2.8 × 0.5–0.8 mm, oblong-elliptical, 1-nerved, glabrous, the apex obtuse to rounded; lip 1.8–3.1 mm long, 1.5–1.6 mm wide between the lateral lobes, 3-lobed, 5–7-nerved, margin entire, producing a spur at base, lateral lobes 0.8–1.4 × 0.3–0.4 mm, oblong to oblanceolate, the apex rounded, mid-lobe 1.0–2.0 × 0.7–0.9 mm, deltoid to lanceolate, the apex acute, spur 1.5–2.0 mm long, 0.4–0.6 mm diameter, clavate to cylindrical-clavate, curved, pale green, glabrous, the apex rounded; gynostemium 0.3–0.5 mm long, anther cap apex 2-lobed. Capsules 4.0–6.0 × 1.5–2.0 mm, glabrous, pedicel ca. 1.0 mm long.

Distribution and Habitat:— South America ( Argentina, Brazil, and Paraguay), in Brazil (states of Espírito Santo, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina and São Paulo). It grows only in the Atlantic Forest and often found in montane ombrophilous forests, but also in lowland forests in Southern Brazil.

Conservation status:— Based on its wide distribution, this species falls under the Least Concern (LC) category.

Nomenclatural notes:— Cogniaux (1906) cited two specimens as types of C. ulaei , “ E. Ule 1628” (AMES, BR, HBG) and “J. de Moura s.n.” (BR). Here, we designated the collection of Ule as the lectotype based on the name of the species and duplicates available. A mistake on the spelling of the name, “ C. ulei ”, has been used in some data bases such as The Plant List, and must be disregarded. Campylocentrum gracile and C. ulaei var. parviflorum are both parts of the morphological variation of C. ulaei and therefore we considered them as synonyms. However, C. ulaei var. peruvianum C. Schweinfurth (1953:19) should be treated as a distinct species and a new combination changing the status of the species is provided below.

Similar species:— Among the Brazilian species of the section, Campylocentrum ulaei is similar to C. calostachyum and C. serranum , from which they can be recognized by its clavate to cylindrical-clavate spur (vs. cylindrical). Mature specimens of C. ulaei are the largest among the group of lax inflorescences, with stems reaching 25 cm long. (Table 1)

Additional specimens examined:— ARGENTINA. Missiones: San Pedro, Parque Provincial Moconá, s.d., Deginiani 1083 (SI); General Manuel Belgrano, 16 Dec 1997, Múlgura 1913 (SI). BRAZIL. Espírito Santo: Vargem Alta, 2 Jun 1949, Brade 20386 (RB); Paraná: Campina Grande do Sul, Sítio Belizário, 27 Dec 1966, Hatschbach 15550 (F, HB, HBR, K, UPCB); Londrina, Parque Estadual Mata do Godoy, 14 Feb 2013, Molina 38 (FUEL), ibid., Serra do Cadeado, 2 Mar 1985, Chagas & Silva 715 (CEN, FUEL, K); Piraquara, Haras Santo Antônio, 6 Nov 2003, Kersten 713 (UPCB); Rio de Janeiro: Nova Friburgo, Reserva Ecológica de Macaé de Cima, 27 Nov 1990, Toscano et al. 657 (RB); Serra dos Órgãos, 24 Nov 1942, Pereira 172 (HB, RB); ibid., 13 Dec 1891, Ule s.n. (R); ibid., September 1949, Brade s.n. (RB); Teresópolis, 10 Nov 1980, Orsnich s.n. (HB); ibid., Granja Comarí, 14 Nov 1929, Brade 10000 (HB, SP); ibid., 30 Oct 1929, Brade 9844 (RB); ibid., Feb 1888, Moura 92 (BR!); Rio Grande do Sul: Faxinal, Cambará do Sul, Jan 1984, Sobral 2859 (ICN); Santa Cruz do Sul, Trombudo, 22 Feb 1982, Waechter 1869 (ICN); São Leopoldo, 1940, Rohr s.n. (RB); ibid., s.d., Dutra 983 (ICN); Santa Catarina: Ararangá, Serra da Pedra, 28 Dec 1943, Reitz 397 (HB, HBR, RB); Imaruí, Águas Mornas, 16 Jan 1973, Klein & Bresolin 10686 (FLOR); Joinville, Serra Dona Francisca, 10 Dec 2009, Cadorin et al. 941 (FURB); São Paulo: Caraguatatuba, 1 May 2015, Miranda s.n. (UFP); Paraná-Piacaba, 25 Nov 1956, Handro s.n. (SP); São Paulo, Estação Biológica APA da Serra, 8 Dec 1925, Kuhlmann s.n. (SP). PARAGUAY. Alto Paraguay: Ñu-cañy, Mar 1919, Fiebrig 6051 ( AS); Santa Barbara: 1882, Balansa 2997 (BAF!).

Figures

FIGURE 6. Distribution map of Campylocentrum micranthum, (black square); C. serranum (white circle), C. steyermarkii (white triangle) and C. ulaei (black circle).

FIGURE 7. A–D. Campylocentrum steyermarkii. A. Habit. B. Flower. C. Lip and spur in profile. D. Dissected perianth. E–H. C. ulaei. E. Habit. F. Flower G. Spur in profile. H. Dissected perianth. [A–D drawn from Ribeiro et al. 1642 (K). E–H. drawn from Brade 10000 (HB)].