Quercus pagoda |
Quercus toumeyi |
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cherrybark oak, Texas oak |
Toumey oak, Toumey's oak |
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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 or small trees, deciduous or subevergreen. |
Bark | dark gray to almost black, scaly. |
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Twigs | yellowish brown, 2-3.5 mm diam., pubescent. |
brownish, 1-2 mm, usually persistently pubescent. |
Buds | reddish brown, ovoid, ca. 1 mm. |
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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 oblong-elliptic or lanceolate, 15-25(-30) × (6-)8-12(-15) mm, base obtuse or cuneate, rarely subcordate, margins strongly cartilaginous, entire, sometimes sparsely mucronate-dentate toward apex, secondary veins 7-8 on each side, apex acute, sometimes rounded; surfaces abaxially dull gray, microscopically pubescent with long, soft, white or yellow hairs concentrated in tufts along midvein and base, adaxially glossy green, sparsely minutely stellate-pubescent or glabrate. |
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 or on peduncle 2 mm; cup cup-shaped, 6 mm deep × ca. 8-9 mm wide, enclosing ca. 1/3 nut, scales moderately tuberculate; nut light brown, narrowly ovoid or elliptic, 8-15 × 6-8 mm. |
Cotyledons | distinct. |
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Terminal | buds light reddish brown, ovoid, 4-9 mm, strongly 5-angled in cross section, puberulent throughout. |
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Quercus pagoda |
Quercus toumeyi |
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Phenology | Flowering spring. | Flowering spring. |
Habitat | Poorly drained bottoms and mesic slopes | Rocky slopes, oak woodlands, and open chaparral |
Elevation | 0-300 m (0-1000 ft) | 1500-1800 m (4900-5900 ft) |
Distribution |
AL; AR; FL; GA; IL; IN; KY; LA; MO; MS; NC; OK; SC; TN; TX; VA
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AZ; NM; TX; Mexico (Chihuahua and Sonora)
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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 toumeyi, particularly the more spinescent-leaved form, is often confused with Q. turbinella. The latter species has acorns on peduncles greater than 10 mm, and more or less evenly distributed minute, flat, stellate trichomes on the abaxial leaf surface, in contrast to the subsessile acorns and longer straight hairs along the midvein of the abaxial leaf surface in Q. toumeyi. (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 | Q. hartmanii |
Name authority | Rafinesque: Alsogr. Amer., 23. (1838) | Sargent: Gard. & Forest 8: 92. (1895) |
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