| Gustavia angustifolia | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Ericales |
| Family: | Lecythidaceae |
| Genus: | Gustavia |
| Species: | G. angustifolia |
| Binomial name | |
| Gustavia angustifolia | |
Gustavia angustifolia is a small tree, native to South America, with large white flowers. It is an endangered species. [1]
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 genus Gustavia. [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]
Gustavia 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 35 to 100 mm in length. [2] The buds of G.angustifolia are tomentose with a gray coloration. [2] These flowers can grow to be 10–14.5 cm in diameter. The petals have an elliptical shape and are 50–65 mm long and 20–25 mm wide. [2] The androecium of G.angustifolia is fused. The fruit are globe shaped with a flat summit. [2]
Gustavia 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]
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]
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