Parasenegalia rurrenabaqueana Seigler &amp; Ebinger &amp; Riggins &amp; Terra &amp; Miller 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

description: <b>3. Parasenegalia rurrenabaqueana (Rusby) Seigler &amp; Ebinger</b>, comb. nov. Basionym: <i>Acacia rurrenabaqueana</i> Rusby, Mem. New York Bot. Gard. 7: 255. 1927. <i>Senegalia rurrenabaqueana</i> (Rusby) Seigler &amp; Ebinger in Seigler et al., Phytologia 88(1): 72. 2006. TYPE: Bolivia. Beni: Rurrenabaque, 1000 ft., 25 Jan. 1922, <i>O. E. White 2043</i> (holotype, NY! [barcode] NY00001544; isotypes, GH!, K not seen, US! [bc] US00000606, US01014372). Figure 4. Climbing shrub or small tree to 6 m tall; bark not seen; twigs light reddish to yellowish brown, not flexuous, terete, puberulent; short shoots absent; prickles absent. Leaves alternate, 60–200 mm long; stipules dark brown, linear, symmetrical, flattened, straight, herbaceous, 2.5–7.5 mm long, 0.2–0.4 mm wide near the base, pubescent, tardily deciduous; petiole adaxially grooved, 18–35 mm long, densely puberulent; petiolar gland solitary, located on the upper half of the petiole commonly near the lowermost pinna pair, sessile, oval to orbicular, 0.8–2.2 mm across, apex flattened to shallowly cupshaped, glabrous; rachis adaxially grooved, 40–170 mm long, usually densely puberulent, an oval gland 0.8–1.8 mm across between the uppermost 1 to 2 pinna pairs, apex flattened to depressed, glabrous; pinnae 6 to 9 pairs/leaf, 55–95 mm long, 8–17 mm between pinna pairs; paraphyllidia 0.5–1.1 mm long; petiolule 2–4 mm long; leaflets 13 to 30 pairs/pinna, opposite, 2.5–4.5 mm between leaflet pairs, oblong, 7–15 <b>X</b> 2.3–5.5 mm, appressed pubescent below and sometimes above, lateral veins obvious, 2 to 4 veins from the base, base oblique, truncate on one side, margins ciliate, apex narrowly acute to acuminate, midvein submarginal. Inflorescence a densely 15- to 35-flowered globose head 6.5–10 mm across, in terminal pseudopaniculate clusters, the main axis to 450 mm long; peduncles 2–12 <b>X</b> 0.3–0.5 mm, densely puberulent; receptacle not enlarged, slightly elongated; involucre 1 to 2 small bracts scattered along the upper half of the peduncle, early deciduous; floral bracts spatulate, 0.3–0.8 mm long, puberulent, early deciduous. Flowers sessile, creamy white; calyx 5-lobed, 0.9–1.6 mm long, puberulent; corolla 5-lobed, 1.7–2.4 mm long, puberulent, lobes 1/3 the length of the corolla; stamens 40 to 80; stamen filaments 4–5.5 mm long, distinct; anther glands present; ovary glabrous, the stipe to 0.6 mm long. Legumes straight, flattened, not constricted between the seeds, oblong, 90–180 <b>X</b> 22–35 mm, chartaceous, transverse striate, lightly appressed pubescent, eglandular, dehiscent along both sutures; stipe 6–15 mm long; apex obtuse, beaked; seeds uniseriate, no pulp, light to dark brown, nearly oval, strongly flattened, 6.5–8.5 <b>X</b> 5.5–7.5 mm, smooth; pleurogram U-shaped, 1.5–2.5 mm across. <i>Habitat and distribution</i>. <i>Parasenegalia rurrenabaqueana</i> has been collected from dry semi-deciduous forests and seasonally flooded savannas, disturbed second-growth forest, and thickets from near sea level to 700 m in Bolivia and Peru. <i>Phenology</i>. <i>Parasenegalia rurrenabaqueana</i> flowers from November through March. <i>IUCN Red List category</i>. <i>Parasenegalia rurrenabaqueana</i> is assessed as Data Deficient (DD) at this time (IUCN, 2001). This species is relatively common in Bolivia and Peru, suggesting that the species may be of Least Concern (LC). <i>Discussion</i>. <i>Parasenegalia rurrenabaqueana, P. visco</i>, and <i>P. santosii</i> are restricted to South America. The ranges of the first two species overlap geographically, but <i>P. rurrenabaqueana</i> is found below 700 m, whereas <i>P. visco</i> is found at higher elevations, between 750 and 3000 m. These two taxa are easily separated, as <i>P. visco</i> has smaller leaflets (3–7 <b>X</b> 0.8– 2.1 mm) with a bluish midvein, while <i>P. rurrenabaqueana</i> has large leaflets (7–15 <b>X</b> 2.3–5.5 mm) and the midvein is not bluish purple. <i>Parasenegalia santosii</i> is only found in northeastern Brazil. <i>Specimens examined</i>. BOLIVIA. <b>Beni:</b> Carretera Yucumo-Rurrenabaque, 235 m, 20–25 June 1989, <i>D. N. Smith, M. Buddensiek &amp; V. Garc&amp;imath;á 13577</i> (MO, US). <b>La Paz:</b> Abel Iturralde, San Buenaventura, 190 m, 16 Dec. 2003, <i>A. Fuentes 6164</i> (ILL, MO); Guanay, 1800 ft., 14–16 Apr. 1926, <i>G. H. H. Tate 571</i> (NY). <b>Santa Cruz:</b> 5.5 km NE of Cotoca, 340 m, 28 Nov. 19 90, <i>M. Nee 40046</i> (MO, NY); 13 km NE of Cotoca, 325 m, 18 Dec. 19 92, <i>M. Nee 43143</i> (MO, NY); 7 km NW of Puerto Pailas, 300 m, 10 Feb. 1994, <i>M. Nee 44848</i> (MO, NY); 2.5 km NW of La Esperanza, 270 m, 26 Dec. 1997, <i>M. Nee 47532</i> (ILL, MO, NY); 8.2 km NE of La Esperanza, 265 m, 26 Dec. 1997, <i>M. Nee 47541</i> (ILL, MO, NY); 8.2 km NE of La Esperanza, 265 m, 26 Dec. 1997, <i>M. Nee 47545</i> (ILL, MO, NY); Puente Las Chacras on the Montero-Okinawa hwy., 275 m, 26 Dec. 1997, <i>M. Nee 47552</i> (ILL, MO, NY); Puente El Empalme, 10 km WSW of Colonia Okinawa, 250 m, 11 Jan. 1998, <i>M. Nee 47916</i> (ILL, MO, NY); Parque Nacional Amboro, 400 m, 22 Jan. 1988, <i>M. Nee &amp; M. Saldias P. 36054</i> (MO, NY); Nuflo de Chavez, near San Julian, 274 m, 27 Feb. 2003, <i>L. Rico, T. Windsor- Shaw, A. McRobb, L. Arroyo &amp; C. Roth 1406</i> (MO); Nuflo de Chavez, near San Julian, 370 m, 27 Feb. 2003, <i>L. Rico, T. Windsor-Shaw, A. McRobb, L. Arroyo &amp; C. Roth 1413</i> (MO, NY). PERU. <b>Amazonas:</b> 14–15 km E of Bagua Chica on rd. to La Peca, 680–730 m, 12 June 1978, <i>A. Gentry, M. Dillon, J. Aronson &amp; G. Diaz 22 838</i> (F, MO). <b>Loreto:</b> Ivita, Km. 59, Pucallpa–Tingo Maria rd., 25 Mar. 1977, <i>A. Gentry, J. Revilla, D. A. Castaneda &amp; D. Daly 18604</i> (MO); Fortaleza, near Yurimaguas, 140 m, Nov. 1932, <i>G. Klug 2784</i> (MO, NY, US). <b>Madre de Dios:</b> Parque Nacional del Manú, 350 m, 26 Aug. 1984, <i>R. Foster 9918</i> (MO, NY); 350 m, <i>Vargas 18656</i> (MO). <b>San Martín:</b> Juan Jui, Alto Río Huallaga, 400–800 m, Dec. 1935, <i>G. Klug 4196</i> (F, MO, NY, US); Alto R&amp;imath;ó Huallaga, 360–900 m, Dec. 1929, <i>L. Williams 6788</i> (F); Tarapoto, Dec. 1902, <i>E. Ule 6623</i> (HBG). <b>Ucayali:</b> Lago de Yarinacocha, 250 m, 27 Mar. 1981, <i>R. Vasquez &amp; N. Jaramillo 1513</i> (ILL, MO).
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 187-189, 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."]}