Fontainea borealis
From Wikipedia, the free encyclopedia
| Fontainea borealis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Euphorbiaceae |
| Genus: | Fontainea |
| Species: | F. borealis |
| Binomial name | |
| Fontainea borealis | |
Fontainea borealis is a small tree endemic to Papua New Guinea, in the family, Euphorbiaceae, which grows to a height of 12 m.[2]
Fontainea borealis is a small dioecious tree growing to 12 m. The colour of the stem exudate is unknown. New shoots have dense, antrorse (upward pointing) golden trichomes. There are no stipules and the leaves have petioles, which are swollen at both the base and apex. The upper surfaces of the leaves are dark-green and the lower surfaces, pale-green. There are 8-14 lateral veins on each side of the midrib and between these the venation is reticulate. This plant is very like Fontainea picrosperma, but differs in that it has no glands in the leaf lamina; the disk is irregularly lobed and not as high as that of F. picrosperma (c 0.6 mm high vs 0.7–1 mm); the calyx of the male flower has four lobes (versus 2-3 lobes); the male calyx lobes are ovate/broadly ovate versus triangular ovate; and the stamens are joined for 1–1.5 mm versus 0.5 mm for F. picrosperma.[2]
