| Quercus x streimii | |
| Author | Heuffel ex Freyn 1850 Wachtel Z. 1: 97 |
| Synonyms | pubescens
x petraea = Q.calvescens Vukot. 1883 = Q.pubescens var. streimii (Heuff.) Heuff. 1858 = Q.virgiliana f. streimii (Heuff.) Matyas 1974 = x costae C.Vicioso 1950 = x intercedens Beck 1890 = x lanuginosoides Léveillé 1917, nom. illeg. = x sauteri Dalla Torre 1909 = x semilanuginosa Borbas 1887 = x glabrescens A.Kern. 1876 = x bedoi Simonk. 1887 |
| Local names | |
| Range | from
north Spain to Romania and Sweden; |
| Growth habit | tall tree; |
| Leaves | 5-10 x 3.5-7 cm, deciduous; lustrous and glabrous above, or with some traces of the original stellate pubescence; at first tomentose beneath with long simple hairs mixed with short stipitate fasciculate hairs and stellate others, becoming glabrous except along midrib; base asymmetrical or truncate; sinuate-lobed, lobes lobulate; 5-8 vein pairs, usually with intercallary veins; petiole ca. 0.7-1.6 cm; |
| Flowers | |
| Fruits | acorn often avorted, on 5-7 mm tomentose peduncle; cup enclosing almost all the nut, with dark grey, pubescent scales; stylopodium pubescent; stigmas divergent, with wide obtuse tip; |
|
Bark, twigs and |
branchlets tomentose or glabrescent on to fall; bud 4-6 mm with pinkish, pubescent and ciliate scales; |
| Hardiness zone, habitat | |
| Miscellaneous | ---
In Spain, the taxon named Q.x costae C. Vicioso is treated
as a hybrid between Q.cerrioides (or Q. pubescens)
and Q.petraea subsp huguetiana; but for Rivas-Martinez
& Saenz, it is the hybrid between Q. petraea and Q. pubescens
subsp subpyrenaica; for the recent Spanish authors (F.M.Vazquez
& al.), according to C. Vicioso, this taxon is: Q.
cerrioides X Q. petraea subsp huguetiana; 7-10 vein pairs, without sinusal veins; leaves glabrous above, pubescent underneath at first and becoming glabrous except on vein axils; lobes short and often mucronate; cup with greyish pubescent scales, the lower scales being convex; Spain (Cataluña). |
| Subspecies and varieties |
|
| Pictures |  |