Pseudosenegalia feddeana (Harms) Seigler & Ebinger, 2017

Seigler, David S., Ebinger, John E., Riggins, Chance W., Terra, Vanessa & Miller, Joseph T., 2017, Parasenegalia and Pseudosenegalia (Fabaceae): New Genera of the Mimosoideae, Novon 25, pp. 180-205 : 200-201

1. Pseudosenegalia feddeana (Harms) Seigler & Ebinger , comb. nov.

Basionym: Acacia feddeana Harms, Repert. Spec. Nov. Regni Veg. 16: 450. 1920, replacement name for Acacia fiebrigii Harms, Repert. Spec. Nov. Regni Veg. 16: 351. 1920, nom. illeg., non Acacia fiebrigii Hassl., Repert. Spec. Nov. Regni Veg. 8: 553. 1910. Acacia molfinoi Speg., Bol. Acad. Nac. Ci. 26: 2 1 9. 1 9 21, nom. illeg. superfl. Senegalia feddeana (Harms) Seigler & Ebinger in Seigler et al. , Phytologia 88(1): 51. 2006. TYPE: Bolivia. S. Bolivien, Renecillo bei Tupiza, 2700–3000 m, 28 Feb. 190 4, K. Fiebrig 31 13 (lectotype, designated here, B! [barcode] B100244206, B photos at F! F0BN001274; isolectotypes, B, B fragm. at F! [bc] FV0058010F, BM not seen [bc] BM000952369, G! [bc] G00307474, G [image seen] [bc] G00307475, G [image seen] [bc] G00367708, GH! [bc] GH00058288, LD [image seen] [bc] LD1220764, MO!, S! [bc] S-R-8512, SI not seen [bc] SI0 0 1 4 7 4, US! [bc] US00000210]. Figure 10 .

Shrub or small tree to 8 m tall; bark gray-white to white, smooth; twigs dark purple to dark reddish brown, not flexuous, terete, puberulent; short shoots present at older nodes, 0.5–2.5 mm long, covered with bud scales, stipule remnants, and old leaf bases; prickles absent. Leaves alternate, also clustered on short shoots, 0.5–5.3 mm long; stipules dark brown to black, linear, symmetrical, terete, straight to slightly curved, herbaceous, 0.8–3.5 mm long, 0.1–0.3 mm wide near the base, glabrous, persistent; petiole adaxially grooved, 0.5–5.3 mm long, lightly puberulent; petiolar gland solitary, located at the apex of the petiole between to just below the single pinna pair, sessile, orbicular, 0.2– 0.8 mm across, apex globose, glabrous; rachis absent; pinnae 1 pair/leaf, 1 3–2 3 mm long; paraphyllidia absent; petiolule 0.8–1.5 mm long; leaflets 1 1 to 2 5 pairs/pinna, opposite, 0.3–0.6 mm between leaflet pairs, linear, 1.5–2.8 X 0.4–0.8 mm, lightly appressed pubescence beneath, lateral veins not obvious, 1 vein from the base, base oblique, truncate on one side, margins lightly ciliate, apex acuminate, midvein central to subcentral. Inflorescence a loosely 20- to 4 5-flowered cylindrical spike, 2 0–28 X 1 6–1 9 mm, 1 to 2 from leaf axils and short shoots; peduncles 2–6 X 0.7–0.9 mm, lightly puberulent; receptacle elongated, not enlarged; involucre absent; floral bracts linear, 0.7–1.2 mm long, ciliate, early deciduous. Flowers sessile, pale creamy white; calyx 5-lobed, 1.2–2.1 mm long, puberulent; corolla 5-lobed, 3.3–4.3 mm long, puberulent, lobes 1/4 the length of the corolla; stamens 1 0 0 to 1 4 0; stamen filaments 8–10 mm long, distinct; anther glands absent; ovary glabrous, stipe to 0.7 mm long. Legumes straight to slightly curved, elliptic in cross section, constricted between the seeds, oblong, 4 0– 1 70 X 1 2–2 0 mm, coriaceous, reticulately striated, puberulent, eglandular, dehiscent along both sutures; stipe 2–9 mm long; apex acuminate, not beaked; seeds uniseriate, no pulp, dark brown, oval, flattened, slightly pitted, 1 4–1 9 X 1 0–1 6 mm; pleurogram absent.

Habitat and distribution. Pseudosenegalia feddeana is a species of dry scrub and thorn-scrub vegetation found between 2000 and 3300 m in southern Bolivia.

Phenology. Pseudosenegalia feddeana flowers from September through December.

IUCN Red List category. Pseudosenegalia feddeana is assessed as Data Deficient (DD) at this time ( IUCN, 2001). However, the species is apparently relatively common in a restricted area of Bolivia, suggesting that the species is probably of Least Concern (LC).

Discussion. Harms (1920: 351) described Acacia fiebrigii from the single collection Fiebrig 3113, not specifying any herbarium of deposit. He quickly replaced the epithet ( Harms, 1920: 450), which was superfluous against an earlier A. fiebrigii (Hassler, 1910) . The current lectotypification of the replacement name A. feddeana clarifies the herbarium of deposit at B, at the principal institution of the describing author.

In the year following the publication of Harms’s new name Acacia feddeana, Spegazzini (1921: 219) also published a replacement name for Harms’s later homonym A. fiebrigii . This was included in discussion under Spegazzini’s treatment of A. recurva Benth., and A. molfinoi was clearly associated with A. fiebrigii as its replacement, which was unfortunately too late and therefore illegitimate and superfluous.

One pair of pinnae separates Pseudosenegalia feddeana from P. riograndensis .

Specimens examined. BOLIVIA. s. loc.: 1 9 9 2, G. Navarro Sanchez 1 2 6 2 (MO). Chuquisaca: Nor Cinti Prov., 3 8 km S of Camargo on rd. from Potosí to Tarija, 2 3 5 0 m, 2 6 Feb. 1 9 8 9, J. Aronson 7 8 0 1 (MO); Trayecto Las Carreras–Camargo, 2 2 6 1 m, 3 1 Dec. 2 0 0 5, M. Serrano, J. Villalobos, A. Lliully, J. A. Peñaranda & R. Lozano 7 1 5 1 (ILL, MO, NY); Sud Cinti Prov., 2 km N of Impora along rd. from Tarija to Las Carreras, 2 6 0 0 m, 5 Dec. 1 9 67, B. Vuilleumier 4 1 0 (GH, NY, TEX, US). Potosí: 3 0 0 0 m,´D ec. 1 9 3 2, M. Cardenas 3 0 0 (US); Potosi, Calcha, 2 6 Oct. 1 9 8 9, S. Peca s.n. (NY); Cantón Calcha, camino entre Pucapampa y Panica, 2 8 0 0 m, 2 3 Sep. 1 9 8 7, M. Schulte 1 (NY); Canton Yawisla, orilla del camino Mayopalca- Surmajchi, 2 85 0 m, 4 Feb. 1 9 8 8, M. Schulte 1 2 3 (NY); Prov. Nor Chichas, colina con laderas, 3 3 0 0 m, 1 5 Apr. 1 9 9 3, G. Torrico & C. Peca 3 9 3 (NY); Mar. 1 9 7 9, L. Verlinde s.n. (BR). Tarija: Iscayachi 5 0 km hacia el valle de Paicho, 2 7 0 0 m, 1 1 Nov. 1 9 9 3, G. Beck, R. Kiesling & D. Metzing 2 2 1 0 3 (MO); Tojo, 1 2 Feb. 1 9 6 0, T. Meyer, R. Cuezzo & R. Legame 2 1 6 1 7 (GH); Méndez, localidad de Paicho Norte, 2 1 0 0 m, 1 9 Feb. 2 0 0 7, I. L. Foronda 9 7 5 (ILL. MO, NY); Tomayapo, Prov. Mendez, 2 9 34 m, 1 9 Apr. 2 0 0 3, L. Rico, T. Windsor-Shaw & C. Vacaflores 1 6 4 1 (MO, NY).

Figures

Figure 10. Pseudosenegalia feddeana (Harms) Seigler & Ebinger. —A. Flower. —B. Twig with leaf and spicate inflorescence. —C. Fruit. —D. Leaflet, adaxial surface. —E. Petiolar gland. A–E from Vuilleumier 410 (NY).