Quercus pagoda |
Quercus sadleriana |
|
---|---|---|
cherrybark oak, Texas oak |
deer oak, sadler oak |
|
Habit | Trees, deciduous, to 40 m. Bark nearly black with narrow and noticeably flaky ridges, often resembling that of wild black cherry, inner bark orange. | Shrubs, evergreen, to 1-3 m, rhizomatous. |
Bark | gray, smooth. |
|
Twigs | yellowish brown, 2-3.5 mm diam., pubescent. |
reddish or brown, pruinose, 3-4 mm diam., glabrous, sometimes sparsely puberulent around buds. |
Buds | yellowish or tan, broadly ovoid or globose, 8-10 mm; scales loose, acute-ovate, silky. |
|
Leaves | blade ovate to elliptic or obovate, 90-300 × 60-160 mm, base cuneate to rounded or truncate, margins with 5-11 lobes and 10-25 awns, lobes oblong, rarely falcate, terminal lobe rarely exceeding lateral lobes in length, apex acute; surfaces abaxially pale, tomentose, adaxially glossy, glabrous, secondary veins raised on both surfaces. |
blade obovate or elliptic, 70-140 × 35-80 mm, base rounded or rounded-acuminate, rarely subcordate, margins serrate, not deeply lobed, teeth antrorse-acuminate, sharply mucronate, secondary veins prominent, parallel, straight, (8-)10-15 on each side, apex acuminate or acute; surfaces abaxially light green, waxy, with sparse or scattered, minute, asymmetric, appressed, 4-8-rayed stellate hairs 0.1-0.2 mm diam., and prominent raised stomates giving surface minute granular appearance, adaxially dark green, glabrous. |
Acorns | biennial; cup saucer-shaped to cup-shaped, 3-7 mm high × 10-18 mm wide, covering 1/3-1/2 nut, outer surface puberulent, inner surface pubescent, scale tips tightly appressed, acute; nut subglobose, 9-15 × 8-16 mm, often striate, puberulent, scar diam. 5-9 mm. |
solitary or paired, subsessile; cup hemispheric or funnel-shaped, 7-9 mm deep × 10-18 mm wide, scales gray, moderately tuberculate, tips reddish brown; nut light brown, ovoid or subglobose, 15-20 × 10-15 mm. |
Cotyledons | distinct. |
|
Terminal | buds light reddish brown, ovoid, 4-9 mm, strongly 5-angled in cross section, puberulent throughout. |
|
Quercus pagoda |
Quercus sadleriana |
|
Phenology | Flowering spring. | Flowering spring. |
Habitat | Poorly drained bottoms and mesic slopes | Open slopes in coniferous forest |
Elevation | 0-300 m (0-1000 ft) | 600-2200 m (2000-7200 ft) |
Distribution |
AL; AR; FL; GA; IL; IN; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA
|
CA; OR
|
Discussion | Quercus pagoda is often treated as a variety of Q. falcata; it is quite distinctive, however, both morphologically and ecologically (S. A. Ware 1967; R. J. Jensen 1989). This species reportedly hybridizes with Q. falcata and Q. phellos (D. M. Hunt 1989). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Quercus sadleriana is one of the most distinctive western oaks, with strong similarities to certain eastern North American and Asian species of Quercus with "chestnut" leaves. Its restricted distribution in the Siskiyou region and uncertain relationships suggest it is a relictual species. It hybridizes occasionally with Q. garryana var. breweri (see treatment). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Fagaceae > Quercus > sect. Lobatae | Fagaceae > Quercus > sect. Quercus |
Sibling taxa | ||
Synonyms | Q. falcata var. leucophylla, Q. falcata var. pagodifolia, Q. leucophylla, Q. pagodifolia | |
Name authority | Rafinesque: Alsogr. Amer., 23. (1838) | R. Brown ter: Ann. Mag. Nat. Hist., ser. 4, 7: 249. (1871) |
Web links |