Published August 1, 2025
| Version v1
Dataset
Open
TABLE 1. Morphological differences between P. yanesha, P in A new species of Polylepis (Rosaceae) from the Oxapampa-Asháninka-Yánesha Biosphere Reserve, Perú
- 1. Missouri Botanical Garden. Prolong. Bolognesi Mz. E Lote 6, Oxapampa-Pasco, Perú
- 2. Instituto Nacional de Investigación en Glaciares y Ecosistemas de Montaña (INAIGEM), Av. Centenario 2656, Huaraz, Perú
Description
TABLE 1. Morphological differences between P. yanesha, P. rocio-rojasii, and P. pampabella.
| Characters | Polylepis yanesha | Polylepis rocio-rojasii | Polylepis pampabella |
|---|---|---|---|
| Rhytidomes | Short, thin, papyraceous, dark brown to reddish brown | Long, thick, dark brown to reddish brown | Long, thin, orange to dark brown |
| Leaves | Obovate | Simple triangular | Orbicular, obovate |
| Petioles | 0.7–1.0 cm long, lanuginose with sparse filiform glandular trichomes of golden-yellowish resin and a 2 mm long tuft of hairs at the insertion of the petiole to the twig | 0.7–1.2 cm long, lanuginose, without glandular trichomes, with a tuft of hairs 2.4–2.7 m long at the insertion of the petiole to the twig | 0.5–1.5 cm long, sericeous with glandular reddish-yellow resin trichomes, with a tuft of hairs 2.0–3.0 mm long, at the insertion of the petiole to the twig |
| Stipular sheath | 3.0 × 0.8 cm with 2 persistent spurs, covered by sericeous indumentum 2.5–3.0 mm long on the external surface | 2.2–2.3 × 0.4–0.5 cm with 2 deciduous spurs, covered by sericeous indumentum 3.0–4.0 mm long on both sides | 1.5–1.8 cm long with 2 spurs, covered by sericeous indumentum on the external surface |
| Leaflets | Imparipinnate with 1 pair, oblong-elliptic, adaxial surface sparsely lanuginose dark green, secondary venation inconspicuous, abaxial surface densely lanuginose with glandular filiform hairs of golden-yellowish resin, tridentate emarginate apex. Central, 2.9–4.0 × 0.6–0.8 cm, base obtuse, symmetrical. Lateral, 2.4–3.4 × 0.6–0.8 cm sessile, bases asymmetrical | Imparipinnate with 1 pair, oblong-elliptic to obovate-elliptic, adaxial surface sparsely lanuginose dark green, secondary venation strongly printed conspicuous, abaxial surface densely lanuginose without glandular trichomes, apex emarginate. Central 3.5–4.5 × 0.8– 1.3 cm, base obtuse, symmetrical. Lateral, 3.0–4.5 × 0.8–1.0 cm, sessile, bases asymmetrical | Imparipinnate with 1–2 pairs, oblong-lanceolate, adaxial surface glabrescent, light olive green, with inconspicuous secondary venation, abaxial surface densely sericeous without glandular trichomes, apex emarginate. Central 2.8–4.9 × 0.4–1.0 cm, base attenuated, symmetrical. Lateral, 2.3–4.5 × 0.4–0.9 cm, sessile, asymmetric bases strongly auriculate |
| Inflorescence | 4.0–8.0 cm long, lanuginose, semi-pendulous, rigid, with 5–8 flowers | 6.0–7.0 cm long, lanuginose, rigid pendulous, with 6–12 flowers | 8.0–14.0 cm long, sericeous, pendulous, with 6–13 flowers |
| Floral bract | 5–8, concave-cymbiform, 8.2–8.3 × 1.2–1.3 mm, densely lanuginose on the outer surface | 6–12, ovate-elliptic, acuminate, 7.0–9.0 × 2.2–2.7 mm, densely sericeous on the outer surface | 6–13, narrowly triangular, 0.8–1.7 × 0.2–0.3 cm slightly sericeous to glabrescent on the outer surface |
| Sepals | 3–4, mostly 4, concave cymbiform, densely lanuginose on the outer surface | 3–4, ovoid triangle, erect, concave, densely lanuginose on the outer surface | 3-4, rarely 5 ovate, green, densely sericeous on the outer surface |
| Androecium | 18–19 stamens | 6–18 stamens | 17–24 stamens |
| Gynoecium | Style 1.8–2.0 mm in length | Style 1.7–1.8 mm in length | Style 1.5–2.8 mm in length |
| Fruits | Rounded-ovoid 3.0–3.2 × 3.3–3.5 mm to cylindrical 4.0–4.2 × 1.7–1.8 mm, densely lanuginose, with 7–8 short spines, with blunt apex | Rounded-ovoid, 3–3.5 × 2.8–3.2 mm, densely lanuginose, with 1–7 short spines with blunt apex. | Turbinate, 2.5–6.5 × 4.5–10.0 mm, densely sericeous with 10–15 long pointed spines |
| Divergence of lateral leaflets (°) in mature leaves | 30–45° | 75–90° | 65–85° |
Notes
Published as part of Gamarra, Luis Valenzuela & Espinoza, Tatiana Erika Boza, 2025, A new species of Polylepis (Rosaceae) from the Oxapampa-Asháninka-Yánesha Biosphere Reserve, Perú, pp. 258 in Phytotaxa 712 (3) on page 258, DOI: 10.11646/phytotaxa.712.3.3, http://zenodo.org/record/17111024
Files
Files
(4.8 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:1cce2b0acab3a5002f17ce5107d5846a
|
4.8 kB | Download |
System files
(10.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:97eb6b917802d6b7d8b5576cd98c136c
|
10.4 kB | Download |