Lyonothamnus ( lat. Lyonothamnus ) is a monotypic genus of flowering plants in the Rosaceae family . The only species is Lyonothamnus floribundus .
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Lyonothamnus A.Gray , 1885 | |||||||||||||||||||||
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Security status NatureServe Imperiled : Lyonothamnus floribundus |
Content
Title
The scientific name Lyonothamnus was given to the genus Acea Gray in 1885 in honor of the plant collector William Scragam Lyon (1852–1916), author of several works on the California flora who first discovered this plant.
Botanical description
Lionotamnus is an evergreen shrub or tree , sometimes as high as 12 m in height, with a scaly, flaky dark brown bark . The central trunk reaches 25 cm in diameter. The leaves are opposite, located on rather long petioles, 10–20 cm long, of lanceolate form, with a solid or dentate margin, simple, sometimes dissected into 3–8 unequal lobes. The upper side of the plates is dark green, the lower one is lighter, yellow-green, velvety-pubescent. The central vein is orangish. Stipules short, small, lanceolate.
Flowers about 0.5 cm in diameter, arranged on thin pedicels, collected at the ends of the twigs in complex umbellate inflorescences-shields. Calyx hemispherical, pubescent. The corolla consists of five rounded white petals. Each flower has about 15 curved stamens with elongated anthers. The gland is pubescent, pubescent, apical, with two carpels. Pestikov two, with flattened stigmas.
The fruit is woody, glandular, cracking when ripe. Seeds are egg-shaped, light brown.
Lyonotamnus wood is hard, heavy, red with a reddish tint.
Area
In the wild, Lionotamnus grows exclusively in California and on the coastal islands. The largest size reaches in the northern part of the island of Santa Cruz . Often grown in California as an ornamental plant.
Classification
| 8 more families (according to the APG II System ) | 7 tribes and genus of Gillenia | ||||||||||||||
| Rosaceae order | subfamily Plum | ||||||||||||||
| Lyonothamnus floribundus with two subspecies | |||||||||||||||
| department Flowering, or Angiosperms | Pink family | genus Lionotamnus | |||||||||||||
| another 44 orders of flowering plants (according to the APG II System ) | subfamily Rosaceae and Dryad | ||||||||||||||
Synonyms
View
The genus Lionotamnus includes one modern species with two subspecies. Also known are several fossil species of the genus, more widespread than the modern.
Lyonothamnus floribundus A.Gray, 1885
- Lyonothamnus floribundus subsp. aspleniifolius ( Greene ) PHRaven , 1963
- [ syn. Lyonothamnus aspleniifolius Greene, 1885 ]
- [ syn. Lyonothamnus floribundus f. aspleniifolius (Greene) Franceschi , 1900 ]
- [ syn. Lyonothamnus floribundus var. aspleniifolius (Greene) Brandegee , 1890 ]
- Lyonothamnus floribundus subsp. floribundus
Notes
- ↑ About the conditionality of specifying the class of dicotyledons as a higher taxon for the group of plants described in this article, see the section “APG Systems” of the article “Dicotyledons” .
Literature
- Sargent, CS Manual of the Trees of North America. - Dover, 1965. - Vol. 1. - p. 378-379. - 934 p. - ISBN 0486202771 .