Lupinus austrorientalis var. jujuyensis (C.P.Sm.) Planchuelo, 2022

Planchuelo, Ana María, 2022, New varieties and synonyms of Lupinus species (Fabaceae, Faboideae) of Northwestern Argentina, Phytotaxa 566 (2), pp. 143-170 : 165

3.3. Lupinus austrorientalis var. jujuyensis (C.P.Sm.) Planchuelo comb. et stat. nov. Table 1 & 2 (third column). Figs. 3 & 4 E .

Basionym: Lupinus jujuyensis C.P.Sm., Sp. Lup. : 340 (1944). syn. nov.

Type:— ARGENTINA: Prov. Jujuy: Dpto. Tumbaya: Cerro Moreno , 4000 m s.n.m., 4 Feb. 1929. S. Venturi 8163 (holotype: A ex GH! , isotypes, K!, MO!, UC!, US!) .

Etymology:— “ jujuyensis ” a Latin version of the province where the type was collected.

Phenology:— Plants are in bloom from early to late summer (January-March), depending on climatic and environmental conditions of the places where they grow.

Distribution, Habitat and Red List of Endemic Species Category:— It is a non-common variety that was collected in a few places in Jujuy and Salta ( Fig. 4 D ). It grows on banks of rivers and on streams. The first collection record was in 1929 in Tumbaya, Jujuy, and the last one in 1996 in Oran, Salta. The lack of specimens collected in the later 14 years, may be attributed to the extreme ecological condition where the variety grows and the effect of climate changes. This variety at species level ( L. jujuyensis ) was assigned in the Category 5 (PlanEAr, 2021), now considering the restricted distribution along with the complexity of environmental degradation make that this variety retain the Category 5 (PlanEAr) that was assigned at species level in 2010 and be assigned for the first time the status EN (Endangered) under the IUCN scale.

Comments:— This variety represents a group of plants with adaxial face of the leaflets with a denser indumentum and with orbicular banners that are characters different that the ones of the other two varieties.

Representative Specimens: ARGENTINA: Prov. Jujuy: Dpto. Humahuaca: Azul Pampa, 16 Mar. 1976, T. A. Breglia 64 (JUA was previously identified as L. tomentosus DC ); Mina Aguilar , ladera entre Molino y Mina Aguilar , 4250–4350 m s.n.m., 3 Mar. 1983, J. Hunziker et al. 10536 (SI). Dpto. Tilcara: Maimará, Hudchin (should be Huichaira), 3000 m s.n.m., 17 Jan. 1912, Budin wout/# (SI, by mistake LIL 46788, not L. opertospicus types). Dpto. Tumbaya: Cerro Moreno, 4000 m s.n.m., 4 Feb. 1929, S. Venturi 8163 (GH, K, MO, UC, US, L. jujuyensis types); Concentración Vieja, 4000 m s.n.m., 20 Sep. 1948, S. A. Pierotti 7517. Dpto. Valle Grande: Santa Ana, 3100 m s.n.m., 1 Mar. 1940, A. Burkart & N. Troncoso wout/# SI 11774 (SI the specimen was previously identified by D. Murray,1973 as L. amnis-churquis, US ). Prov. Salta: Dpto. Cafayate: Río Colorado, pasando la segunda cascada, en el lecho del río, 28 Dec. 1987, F. Juárez 1657 (MCNS). Dpto. Orán: Abra de Querusillar, desde Varas a Campo Verde, pastizal altoandino, 3 Feb. 1996, Hilgert et al 1188 (JUA). Dpto. Rosario de Lerma: El Alfarcito, antes de Sta. Rosa de Tastil, 2780 m s.n.m., playa del río, 1 Dec. 1988, L. Novara 5606 (MCNS).

Figures

FIGURE 3. Lupinus austrorientalis C.P.Sm. A. Isotype at SI showing the label that says “Leg Pablo Güther, Lorentz, Fl. Arg. 464”. B. Dissected flowers with banners wider than long, typical of var. austrorientalis & var. umidicola (Planchuelo 958). C. Dissected flowers showing the orbicular banner of var. jujuyensis (Venturi 8163). D. Plant growing in Salta, representative specimen Fabbroni 1754 (MCNS) (Photo Fabbroni). E. Detail of inflorescence. F. Detail of flower showing the wide banner that covers the calyx. G. Portion of stem with semi-appressed long hairs and dense curly short hairs. H. Photo SEM (100 x) showing adaxial face of leaflet covered with long hairs, typical of var. austrorientalis and var. jujuyensis, this later more dense. I. Photo SEM (100 x) showing adaxial face of leaflet glabrous typical of var. umidicola. J. Fresh seed in a pod showing the cream color tegument and angle mark around the hilar region. K. mature seed with darker seed coat and angle mark around the hilar region (Photos Fabbroni).

FIGURE 4. Distribution maps of the treated species. The dots indicate the places where representative specimens were collected. Due to the overlap of places, the number of citations is indicated by province in a north-south sequence. A. Lupinus hieronymi C.P.Sm.: Jujuy 4; Salta, 2; Tucumán, 14; Catamarca 4; La Rioja, 1; Córdoba, 9. B. Lupinus burkartianus C.P.Sm.: Jujuy 14; Salta, 6; Tucumán, 16; Catamarca 4; La Rioja, 2. C. Lupinus austrorientalis C.P.Sm. var. austrorientalis: Jujuy 8; Salta, 3; Catamarca, 5; La Rioja, 1. D. Lupinus austrorientalis var. umidicola (C.P.Sm.) Planchuelo: Jujuy, 2; Salta, 13; Tucumán, 4; Catamarca 7; La Rioja, 3; Córdoba, 6. E. Lupinus austrorientalis var. jujuyensis (C.P.Sm.) Planchuelo: Jujuy, 6; Salta, 3.