Pseudosenegalia riograndensis Seigler &amp; Ebinger 2017, comb nov.
Creators: name: Seigler, David S.
name: Ebinger, John E.
name: Riggins, Chance W.
name: Terra, Vanessa
name: Miller, Joseph T.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Pseudosenegalia
Pseudosenegalia riograndensis

description: <b>2. Pseudosenegalia riograndensis (Atahuachi &amp; L. Rico) Seigler &amp; Ebinger</b>, comb nov. Basionym: <i>Acacia riograndensis</i> Atahuachi &amp; L. Rico, Kew Bull. 62: 605. 2007. TYPE: Bolivia. Cochabamba: Prov. Campero, Pasorapa, en la bajada de Buenavista hacia el R&amp;imath;o Grande, 1447 m, 27 Dec. 2004, <i>J. R. I. Wood, M. Atahuachi &amp; M. Mercado 21251</i> (holotype, BOLV; isotypes, K! [barcode] K 00503018, K! [bc] K 005033019, LPB [bc] LPB0 0 0 0 6 7 6, MEXU [bc] MEXU0128851). Figure 11. Tree to 12 m tall; bark nearly white, smooth to shallowly fissured; twigs orange to reddish brown, not flexuous, terete, glabrous; short shoots present at some nodes, 0.4–1 mm long, with a few leaves attached; prickles absent. Leaves alternate, also clustered at short shoots, 15–55 mm long; stipules light brown, linear, symmetrical, flattened, straight, herbaceous, 1–2.5 <b>X</b> 0.1–0.2 mm, glabrous, usually persistent; petiole adaxially grooved, 4–13 mm long, glabrous; petiolar gland solitary, located just below to nearly between the lowermost pinna pair, sessile; orbicular to oval, 0.4–1.1 mm across, apex depressed, glabrous, sometimes absent; rachis adaxially grooved, 5–40 mm long, glabrous, an orbicular gland 0.3–0.7 mm across between the uppermost 1 to 2 pinna pair, apex depressed, glabrous; pinnae 3 to 7 pairs/leaf, 9– 2 0 mm long, 3–1 2 mm between pinna pairs; paraphyllidia absent; petiolule 0.9–2.1 mm long; leaflets 12 to 26 pairs/pinna, opposite, 0.8–1.7 mm between leaflet pairs, linear, 1.2–2.9 <b>X</b> 0.5–0.9 mm, glabrous, lateral veins not obvious, 1 vein from the base, base oblique, truncate on one side, margins lightly ciliate, apex obtuse, midvein subcentral. Inflorescence a loosely 40- to 90-flowered cylindrical spike, 28–60 <b>X</b> 12–18 mm, solitary from the leaf axils; peduncles 5–16 <b>X</b> 0.3–0.8 mm, glabrous; receptacle not enlarged; involucre absent; floral bracts spatulate, 0.7–1.1 mm long, ciliate, persistent. Flowers sessile, white; calyx 5-lobed, 1.5–2.2 mm long, lightly puberulent; corolla 5-lobed, 3.5–6 mm long, glabrous to puberulent, lobes 1/5 the length of the corolla; stamens 100 to 140; stamen filaments 7.5–9.5 mm long, distinct; anther glands absent; ovary glabrous, stipe to 2.1 mm long. Legumes straight, flattened, not constricted between the seeds, oblong, 95–130 <b>X</b> 10–15 mm, coriaceous, transversely striated, glabrous, eglandular, dehiscent along both sutures; stipe 6–11 mm long; apex acute, short beaked; seeds uniseriate, with no pulp, light brown, ellipsoid, strongly flattened, 9–11 <b>X</b> 6–7 mm, smooth; pleurogram U-shaped, 3–5 mm across. <i>Habitat and distribution</i>. <i>Pseudosenegalia riograndensis</i> is known locally in seasonally dry tropical forest at about 1300 m in the Rio Grande valley below Pasorapa, Provence Campero, Cochabamba, Bolivia. <i>Phenology</i>. <i>Pseudosenegalia riograndensis</i> flowers from November through December. <i>IUCN Red List category</i>. <i>Pseudosenegalia riograndensis</i> is assessed as Data Deficient (DD) at this time (IUCN, 2001). This species is apparently rare and is only known from two collections, the type and one other from a restricted region in Bolivia suggesting that the species may at least be Vulnerable (VU), perhaps Endangered (EN). <i>Specimen examined</i>. BOLIVIA: <b>Cochabamba</b>: Campero, Bosque Termotropical inferior de <i>Neocardenasia herzogiana</i> y <i>Schinopsis haenkeana</i>, 1300 m, 24 Nov. 1999, <i>C. Antezana 1325</i> (NY).
description: Published as part of <i>Seigler, David S., Ebinger, John E., Riggins, Chance W., Terra, Vanessa &amp; Miller, Joseph T., 2017, Parasenegalia and Pseudosenegalia (Fabaceae): New Genera of the Mimosoideae, pp. 180-205 in Novon 25</i> on pages 201-203, DOI: 10.3417/2015050, http://zenodo.org/record/2561467
description: {"references": ["IUCN. 2001. IUCN Red List Categories and Criteria, 3.1. Prepared by the IUCN Species Survival Commission. IUNC, Gland, Switzerland, and Cambridge, United Kingdom."]}