Published January 10, 2023 | Version v1
Taxonomic treatment Open

Rosa dumalis subsp. teydensis Weller & H. Reichert

  • 1. André-Alexander Weller, Körnerweg 23, 73765 Neuhausen, Germany
  • 2. Hans Reichert, Kohlweg 16, 66123 Saarbrücken, Germany

Description

Rosa dumalis ssp. teydensis Weller & H. Reichert

Holotype:— SPAIN. Canary Islands: Tenerife, Cañadas del Teide, Roque del Rosal, Cañada de la Mareta, 2.100 m a.s.l., 18 June 2019, leg. A.- A. Weller, det. H. Reichert, TFC 53.627 (FIGURE 1). Flowering branch (26 cm) of shrub (ca. 2.5 m), with a few, sickle-shaped prickles (removed for preparation purposes); leaves leathery, in living plant blue-green above, gray-green below, oval-shaped, 26–52 × to 50–86 mm; leaflets seven, almost sessile to very shortly stalked (c. 1 mm), partly overlapping, 6.5–29 x 4.5–20 mm, ovoid, towards inflorescence sometimes acute; margins crenate-serrate (uni- to multiserrate); teeth with sessile to shortly stalked glands; leaflets glandular below along midribs; rachis usually below lowest pair of leaflets with short hairs (0.1–0.2 mm long, occasionally several times longer), and straight to sickle-shaped prickles of 0.3–0.7 mm (1–10; mostly> 4, along rachis); stipules in upper parts of flowering branches 16–21 × 10–12.5 mm (lower stipules smaller), apically acute, with glandular margins; (one) flower pale pinkish, in living plant approx. 28 mm in diameter; petals obovoid, approx. 14 × 11 mm, terminally emarginate; orifice (one measured) 1.4 mm, pedicels c. 7.0– 7.5 mm long, hairy; sepals up to 13 mm long, glandular along margins, tomentosevillous inside, partly outside, with glabrous, glandular appendages of up to two third of length of sepals; hips dark brown to black brown, 5.2–6.0 × 4.5–5.5 mm.

Additional specimens:— SPAIN. Canary Islands: Tenerife, Cañadas del Teide:

Isotype: Roque del Rosal, Cañada de la Mareta, 2.100 m a.s.l., 18 June 2019, leg. A.- A. Weller, WE-19618- Rd; Las Cañadas, Montaña Diego Hernández, leg. E. R. Sventenius, 29 April 1944, ORT 16209; Las Cañadas, ad pedem montis Guajara, Hab. in rupibus apricis, 2.400 m, leg. E. R. Sventenius, 29 April 1944, ORT 2681; Topo de la Grieta, 21 May 1973, leg. W. Wildpret et al., TFC 3879; Topo de la Grieta, presentado en la zona umbrosa, 31 May 1973, leg. W. Wildpret et al., TFC 21.912; Roque del Agua, Cañada de la Grieta, 2.080 m, 20 June 2019, foot of rock, leg. A.- A. Weller (det. H. Reichert), WE-19620- Rd .

Notes

Published as part of Weller, André-Alexander & Reichert, Hans, 2023, On the identity of the Teyde dog-rose (Rosaceae): evidence for a new endemic taxon from Tenerife, Spain, pp. 261-274 in Phytotaxa 578 (3) on pages 263-265, DOI: 10.11646/phytotaxa.578.3.4, http://zenodo.org/record/7523164

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Linked records

Additional details

Biodiversity

Collection code
A , A, H , E, R , H , ORT , TFC , W
Material sample ID
ORT 16209 , ORT 2681 , TFC 21.912 , TFC 3879 , TFC 53.627
Event date
1944-04-29 , 1973-05-21 , 1973-05-31 , 2019-06-18 , 2019-06-20
Verbatim event date
1944-04-29 , 1973-05-21 , 1973-05-31 , 2019-06-18 , 2019-06-20
Scientific name authorship
Weller & H. Reichert
Kingdom
Plantae
Phylum
Tracheophyta
Order
Rosales
Family
Rosaceae
Genus
Rosa
Species
teydensis
Taxon rank
subSpecies
Type status
holotype