Darwiniana ISSN: 0011-6793 [email protected] Instituto de Botánica Darwinion Argentina Donadío, Sabina A VALID NAME FOR THE TAXON KNOWN AS TILLANDSIA BRYOIDES AUCT. (BROMELIACEAE) Darwiniana, vol. 49, núm. 2, 2011, pp. 131-138 Instituto de Botánica Darwinion Buenos Aires, Argentina Available in: http://www.redalyc.org/articulo.oa?id=66922010002 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative DARWINIANA 49(2): 131-138. 2011 ISSN 0011-6793 A VALID NAME FOR THE TAXON KNOWN AS TILLANDSIA BRYOIDES AUCT. (BROMELIACEAE) Sabina Donadío Instituto de Botánica Darwinion (CONICET-ANCEFN), Labardén 200, Casilla de Correo 22, B1642HYD San Isi- dro, Buenos Aires, Argentina; [email protected] Abstract. Donadío, S. 2011. A valid name for the taxon known as Tillandsia bryoides auct. (Bromeliace- ae). Darwiniana 49(2): 131-138. Tillandsia bryoides was sunken into the synonmy of T. tricholepis because all the elements of the lectotype (P. Lorentz 128, BM) belong to the latter species. However, there are many vouchers from different herbaria (some of them cited as reference material in several publications) previously identi- fied as T. bryoides, that in fact correspond to a new species of Tillandsia subgen. Diaphoranthema. This new species has yellow, sessile, solitary flowers and a glabrous floral bract, and grows in central Peru, Bolivia, and central and northwestern Argentina. This paper provides a valid name for this species, an illustration, distribution data, and a discussion of the relationships with its morphologically closest spe- cies. Keywords. Bromeliaceae; Diaphoranthema; taxonomy; Tillandsia. Resumen. Donadío, S. 2011. Un nombre válido para el taxón conocido como Tillandsia bryoides auct. (Bromeliaceae). Darwiniana 49(2): 131-138. Tillandsia bryoides fue incluida en la sinonimia de T. tricholepis porque todos los elementos del lectotipo (P. Lorentz 128, BM) pertenecen a esta última especie. Sin embargo, se observaron en el campo, en distintos herbarios y en diversas publicaciones, materiales que fueron previamente conside- rados como T. bryoides y que en realidad corresponden a una nueva especie de Tillandsia subgen. Dia- phoranthema. Esta nueva especie tiene flores solitarias, sésiles, amarillas y una bráctea floral glabra, y crece en el centro de Perú, en Bolivia, y en el centro y noroeste de Argentina. En este trabajo se esta- blece un nombre válido para esta especie, junto con una ilustración detallada, datos de distribución, y una discusión de sus relaciones con las especies morfológicamente más afines. Palabras clave. Bromeliaceae; Diaphoranthema; taxonomía; Tillandsia. Tillandsia bryoides was validly described by J. pers. comm.). One year later, Grisebach (1879) G. Baker (1878) using A. Grisebach’s name which modified the description of T. bryoides based on appears on the specimen label of Lorentz 128. material from “near Córdoba”, “near Tucumán” ( Four more additional vouchers appear in a sepa- = Lorentz 73), and “near Jujuy”, but describing rate paragraph following the original description: longer leaves (8,5-10 mm vs 6,3-8,5 mm), shorter Gillies s.n. “On trees and bushes at the foot of the bracts (4,2-5,3 mm vs. 6,3-8,5 mm) and dismiss- Cordillera, near Mendoza” (= T. pedicellata (Mez) ing the possibility of 1-flowered inflorescences (2- A. Cast.; W. Lobb s.n. “South Chili” (= T. tri- 3-flowered vs. 1-3-flowered). Nomenclatorically cholepis Baker); Glaziou 3124 “South Brazil” (= he created a younger and invalid homonym to T. tricholepis) and Christie s.n. “Paraná” (= T. tri- Baker’s name. About half a century later, Smith cholepis), all of them housed in K except for (1935) amended the description of T. bryoides Lorentz 128 which Baker had seen in BM (Till, because it “was described from a mixed sheet and Original recibido el 3 de mayo de 2011, aceptado el 28 de junio de 2011. 131 DARWINIANA 49(2) 131-138. 2011 the original description unfortunately contained northwestern Paraguay, with yellow, sessile, soli- both elements. One element had already been tary flowers and a glabrous floral bract, that has described as T. tricholepis, so that the description been known as Tillandsia bryoides (cf. Castel- is amended here to fit the previously undescribed lanos, 1945; Schinini et al., 2008; Subils, 2009), second element. The only definite correction is that Till (1989) distinguished as T. bryoides auct. that the spikes never have more than a single This paper provides precisely a valid name for that flower instead of: ‘Flowers 1-3’ ”. Based on taxon, an illustration, and a discussion of the rela- Smith’s (1935) statements and the data published tionships with its morphologically closest species. in his monograph (Smith & Downs, 1977: 879) the original material on which Baker had described T. bryoides was a mixture of individuals of different Tillandsia minutiflora Donadío, sp. nov. TYPE: taxa, and Smith established what part of the origi- Argentina, San Juan, Depto. Valle Fértil, San nal material corresponded to his amended descrip- Agustín de Valle Fértil, ladera del cerro, frente tion of T. bryoides, being the lectotype of that camping ACA, 850 m s.m., sobre Acacia, 14-XII- name (see McNeill et al., 2006: Article 9.12, Ex. 1987, M. E. Múlgura, C. Antuña & E. A. Ulibarri 7), and what part corresponds to T. tricholepis. 704 (holotype, SI). Fig. 1. Smith and Downs (1977) stated for the first time that this lectoptype (as “holotype”) is housed in Tillandsiae tricholepidi similis, sed caulibus brev- BM with one duplicate (“isotype”) in M. These ioribus, 1,5-3,5(-6) cm longis, foliis 3-nervatis, two specimens as well as further duplicates in G, angustioribus, 0,5 mm latis; pedunculis semper GH, and WU all turned out to be T. tricholepis. reductis et 1-floris et bractea florali glabra, 1- Based on the amendment and commentaries nervia, mediae sepalorum aequans bene differt. made by Smith (Smith, 1935; Smith & Downs, 1977), it can be inferred that at least part of the Epiphytic, perennial, tiny herbs, with adhesive, voucher P. Lorentz 128 housed in BM included reduced roots. Stems short, 1.5-3.5(-6) x 0.3 cm elements of T. bryoides, in agreement with the (leaves included). Leaves densely imbricated, spi- original description published by Grisebach in ral, appressed, erect, 5.5-6 x 0.5-0.7 mm; sheath Baker (1878) and amended by Smith (1935). But thin, translucent, 2 x 1.7 mm, 3-nerved, blade when Till (1989) looked for the lectotype of T. bry- shortly subulate, 3.5-4 x 0.5-0.7 mm. Inflores- oides in BM, he only found half a sheet labelled as cence reduced to 1 flower partially hidden among P. Lorentz 128 with elements of T. tricholepis. the apical leaves. Flowering peduncle very short After a recent consultation (John Hunnex, pers. or reduced, which does not elongate by the fruit comm.), no other sheet of P. Lorentz 128 could be ripening. Peduncle bracts 2, similar to the leaves found in BM. The study of the duplicate kept in M (in shape), but 1-nerved (exceptionally 3-nerved) (M-0111455) and another one found in MPU and without foliose apex, 2.5-3.5 x 1.2-1.4 mm. revealed that they both include only elements of T. Floral bract subulate, thin, glabrous (exceptionally tricholepis. The herbaria K and particularly CORD with 2 or 3 apical trichomes), 1-nerved, half the (Hunziker, 1960) and GOET, where P. Lorentz length of the sepals, 2.5-3 x 1.5 mm. Flowers deposited his collections, do not possess dupli- minute, 6.5 x 1.5 mm (calix tube diameter). Sepa- cates of P. Lorentz 128. This search for isotypes of ls lanceolate, (4-)5(-7)-nerved, 4.8-5.5 x 1.2 mm T. bryoides only produced two old specimens, densely lepidote on the distal half. Petals linear- K000321909 and GOET000424, labelled as prob- oblong, 5.5-6.5 x 1 mm, yellow. Stamens 2.6 mm, able isotypes of T. bryoides, but without informa- deeply included, filament 1.5 mm, anthers at the tion about the collector and locality, and they only level of the stigma, 1.1 mm. Gynoecium 2 mm, include elements of T. tricholepis. All these facts ovary as long as the style, stigma subcapitate. support the inclusion of T. bryoides into the syn- Ovules numerous. Capsule cylindrical, oblong, 20 onymy of T. tricholepis, already suggested by Till x 0.5-1 mm, valves straight. Seeds many, comose. (1989). However, there is still a taxon of Tilland- sia subgen. Diaphoranthema from central and northwestern Argentina, central Peru, Bolivia, and Distribution and habitat. Tillandsia minutiflo- 132 S. DONADÍO. A valid name for Tillandsia bryoides auct. Fig. 1. Tillandsia minutiflora sp. nov. A, habit. B-C, leaves. D, flower with floral bract (front) and one peduncle bract (right). E-F, peduncle bracts. G, floral bract. H, gynoecium, the protuberances at the top of the ovary are typical for the alliance of T. loliacea Schult. & Schult. f., T. tricholepis, and T. minutiflora but need not be developed in every case. I, calyx, abaxial view. J, corolla unfolded, androecium (partly) and gynoecium. K, fruit. From Múlgura et al. 704 (SI), taken from Subils (2009) with modifications. 133 DARWINIANA 49(2) 131-138. 2011 ra grows from central Peru (Till, 1989, sub T. bry- Ascochinga along the street to La Cumbre below oides auct.) through Bolivia up to central Argenti- Las Tres Cascadas, 04-II-1990, Till 5014 (SI). na and northwestern Paraguay, with a disjunct area Depto. Ischilín, unos 10 km E de Villa Quilino, in southern Buenos Aires (Sierra de la Ventana).