Quercus Robur

Plant Characteristics

Cultivation

Scientific Names

Read about Quercus Robur in the Standard Cyclopedia of Horticulture

Quercus robur, Linn. (Q. pedunculata, Ehrh. Q. femina, Mill. Q. Robur var. pedunculata, DC.). English Oak. Figs. 3314, 3315. Tree, to 120 ft., with stout spreading branches forming a broad round-topped head: lvs. short-petioled, auriculate at the base, oblong-obovate, with 3-7 rounded lobes on each side, quite glabrous, dark green above, pale bluish green beneath, 2 1/2-5 in. long: fr. 1-7 on slender peduncles; acorn ovate or ovate-oblong, about 1 in. high, embraced about one-third by the hemispherical cup. Eu., N. Afr., W. Asia. G.C. III. 24:201; 25:168. F.S.R.2,p. 196. G.W.13,p.566. H.W. 2:21, pp. 53-5. F.E. 21:100 (pl. 114).—More than 40 varieties are cult. in European nurseries and collections; some of the most important are the following: Var. Concordia, Schneid. (Q. pedunculata Concordia, Kirchn.). Lvs. bright yellow. I.H. 14:537. F.E. 13:1296 (pl. 19). Var. contorta, Hort. A form with twisted branches and crowded lvs. of irregular shape; of slow growth. Var. fastigiata, Schneid. (Q. pedunculata fastigiata, DC.). With upright branches forming a narrow columnar head. G.C. II. 19:179; III. 41:149. G.W. 15:663. F.E. 13:416 (pl. 3) (as var. Lucombeana). Of the same habit are var. fastigiata cupressoides, Hort., with narrower lvs. Var. fastigiata aureo-punctata with yellowish spotted foliage. var. fastigiata viridis with lvs. of darker green. Var. heterophylla, Rehd. (Q. pedunculata heterophylla, Loud. Q. Robur var. laciniata, Schneid., var. comptoniaefolia, Hort.), with narrow, elongated, slightly or crenately lobed, sometimes almost entire lvs. Var. filicifolia, Schneid. (var. asplenifolia, var. Doumetii, Hort.). Fig. 3316. Lvs. deeply and irregularly divided often almost to the midrib in narrow linear lobes, with crisp margins. G.C. II. 14:632. I.H. 1, black fig., not numbered, opposite pl. 33. R.H. 1894, p. 17. Var. pectinata, Schneid. (Q. Robur var. pectinata, Kirchn.). Lvs. regularly pinnately divided nearly to the midrib into linear lobes. Var. pendula, Schneid. (Q. pedunculata pendula, Loud.). With pendulous branches; a form with more slender and more decidedly weeping branches is var. Dauvessei, Hort. Var. purpurascens, DC. (Q. pedunculata purpurascens, DC., var. purpurea, Loud. Q. Robur sanguinea, Schneid.). With the lvs. bright purple when young, becoming almost green at length, or as in the forms distinguished as var. atropurpurea, Schneid., and var. nigra, Hort., the color is more intense and retained through the whole summer. F.S. 17:1783, 1784. There are a number of variegated forms, but of no great ornamental value; the most often cult. are: albo-variegata, argenteo-marginata, argenteopicta, aureo-variegata, marmorata, joreauensis maculata, tricolor.—Hybrids between this species and the following occur occasionally in Eu. (Q. rosacea, Bechst. Q. hybrida, Bechst., not Brot.). For a hybrid with Q. montana, see No. 24. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

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