All Floras      Advanced Search
FNA Vol. 3 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 3 | Fagaceae | Lithocarpus

1. Lithocarpus densiflorus (Hooker & Arnott) Rehder in L. H. Bailey, Stand. Cycl. Hort. 6: 3569. 1917.

Tanoak, tanbark-oak

Quercus densiflora Hooker & Arnott, Bot. Beechey Voy., 391. 1841

Shrubs or trees , to 20(-45) m. Bark gray or brown, smooth or deeply furrowed. Twigs densely yellowish tomentose. Leaf blade adaxially convex, to 60-120 mm, leathery to brittle, margins often revolute, regularly toothed, teeth prominent to obscure; surfaces abaxially prominently and densely woolly, often glabrate at maturity, revealing gray or bluish green waxy surface, veins often distally impressed. Fruits: cup scales subulate, spreading to strongly recurved, hooked; nut yellowish brown, globose to cylindric-tapered, to 15-35 mm, extremely hard, densely tomentose, eventually glabrate.

Varieties 2: only in the flora.

Sterile specimens of Lithocarpus densiflorus are often confused with Chrysolepis and vice versa. Nonfruiting material of L . densiflorus is recognizable by the loose tomentose pubescence of the leaves and inflorescences (although the leaves are often glabrate with age). Chrysolepis lacks this tomentose pubescence and has only a tight vestiture of glandular-peltate trichomes, except for some stellate and straight simple trichomes associated with the flowers.

The Costanoan used infusions prepared from the bark of Lithocarpus densiflora (no varieties specified) as a wash for facial sores and to tighten loose teeth (D. E. Moerman 1986).

1 Trees, 20(–45) m at maturity; leaves to 120 mm, convex adaxially, secondary veins conspicuous and strongly impressed adaxially.   1a var. densiflorus
+ Shrubs, 3 m or less at maturity; leaves 60 mm or less, flat, secondary veins inconspicuous and not strongly impressed adaxially.   1b var. echinoides

Lower Taxa


 |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |