Quercus species

Tashev, Alexander & Tsavkov, Evgeni, 2017, Validation of the name Quercus protoroburoides (Fagaceae), Phytotaxa 308 (2), pp. 232-238 : 236

publication ID

https://doi.org/ 10.11646/phytotaxa.308.2.4

persistent identifier

https://treatment.plazi.org/id/03A12D5D-FFC4-F95A-FF7A-FCBB37C3FB9F

treatment provided by

Felipe

scientific name

Quercus species
status

 

Key to Quercus species belonging to section Robur in Bulgaria

1. Leaves uniformly sinuate-dentate, with more than 8 pairs straight and parallel lateral veins, intercalary veins absent....................2

- Leaves pinnatifid to deeply pinnatifid, with up to 4–8 pairs lateral veins, with intercalary veins.....................................................3

2. Ramules red-brown, glabrous, relatively thin, terminal buds up to 4 mm, fruits on relatively thin peduncle (up to 1, 5 mm); only in Strandzha Mt., from 0 to 500 m a.s.l., along rivers........................................................................................... Quercus hartwissiana View in CoL

- Ramules light-brown, tomentose (at least on basis strongly tomentose), relatively thick, terminal buds bigger, 4–8 mm, fruits on relatively thick (up to 3 mm) peduncle; only in Rila Mt., at 1500–1750 m a.s.l., on dry, stony, very steep habitats .......................... .................................................................................................................................................................... Quercus protoroburoides View in CoL

3. Leaves glabrous............................................................................................................................................................ Quercus robur View in CoL

- Leaves greyish-puberulent beneath....................................................................................................................................................4

4. Leaves pubescent on the upper surface (with fasciculate-radiate) ......................................................................... Quercus mestensis View in CoL

- Leaves glabrous on the upper surface ............................................................................................................ Quercus pedunculiflora View in CoL

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