Gustavia angustifolia
| Gustavia angustifolia | |
|---|---|
| Conservation status | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Ericales |
| Family: | Lecythidaceae |
| Genus: | Gustavia |
| Species: | G. angustifolia |
| Binomial name | |
| Gustavia angustifolia Benth. | |
Gustavia angustifolia is a small tree, native to South America, with large white flowers. It is an endangered species.[1]
Description
Leaves
Perhaps the most distinguishing feature of G.angustifolia is its leaves.[2] G.angustifolia has an abaxial leaf surface that is covered in short, fine velvety hairs which is an uncommon trait among the Gustavia genus.[2] In general the leaves are sessile but they can have petioles up to 30 mm long.[2] The leaf blades tend to be narrow, having an oblong to oblanceolate shape, while the leaf bases are attenuate to acute in shape.[2]
Flowers and reproduction
G.Angustifolia has a gametic chromosome number of n=17.[2] The inflorescence of G.angustifolia is racemose and terminal, occurring at the end of the branches. Each raceme typically has 4-10 flowers and each flower has 8 petals.[2] The pedicels of the flowers range from 35mm-100mm in length.[2] The buds of G.angustifolia are tomentose with a gray coloration.[2] These flowers can grow to be 10 cm-14.5 cm in diameter. The petals have an elliptical shape and are 50-65mm long and 20–25 mm wide.[2] The androecium of G.angustifolia is fused. The fruit are globe shaped with a flat summit.[2]
Habitat and ecology
G.angustifolia is native to the dry deciduous forests of the coastal plain of Ecuador and Colombia.[2] Pubescent leaves are beneficial in hot, dry environments such as these.[3] The tiny hairs help to keep the leaves cool by reflecting light and casting tiny shadows on the leaf surface.[3] In addition the hairs also provide a barrier between the leaf and the air thereby reducing the amount of exposed surface.[3] Deflecting sunlight and decreasing exposed surface area of the leaf are both adaptations for preventing water loss in the plant.[3] The flowers of this plant bloom in October and begin fruiting in November.[2]
Synonyms and common names
While Gustavia angustifolia is the official scientific name, in the past it has been called Japarandiba angustifolia, Japarandiba ruizana, Gustavia angusta, Gustavia ruiziana, and Gustavia corymbosa.[4] Its common names are Membrillo de Monte and Membrillo de Montaña (Mountain quince).[2]
References
- ↑ "Listado de las especies por categoría". Retrieved 2012-04-28.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 Prance, Ghillean (1979). The actinomorphic-flowered new world lecythidaceae. Bronx, New York: The New York Botanical Garden. pp. 150–151.
- ↑ 3.0 3.1 3.2 3.3 Gilmer, Maureen. "Pubescence Protects Plants". Scripps Networks, LLC. Retrieved 2012-04-28.
- ↑ Stang, David. "Gustavia angustifolia". Retrieved 2012-04-28.