Pilosocereus gaumeri
From Wikipedia, the free encyclopedia
| Pilosocereus gaumeri | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Pilosocereus |
| Species: | P. gaumeri |
| Binomial name | |
| Pilosocereus gaumeri (Britton & Rose) Backeb. | |
Pilosocereus gaumeri is a species of columnar cactus endemic to the Yucatán Peninsula of Mexico.[1] Its common name in Spanish is sabucán.[2]
Pilosocereus gaumeri is a slender-growing branching cactus up to about 2.4 m (8 ft) tall. It has green to yellowish green stems with 8–13 ribs. The areoles are about 5 mm (0.2 in) across and have up to 15 rigid spines. The spines are up to 5 cm (2.0 in) long and yellow to brown when fresh. Flowering areoles have dense tufts of silky hairs up to 5 cm (2.0 in) long. Non-flowering areoles have few or no silky hairs. The flowers are 5–7 cm (2.0–2.8 in) long, occasionally up to 8 cm (3.1 in) long. The outer segments (tepals) are reddish green. The inner segments are white to yellowish green. The flowers last for one night. The fruits have purple pulp when ripe.[3][2]
Taxonomy
The species was first described by Nathaniel Lord Britton and Joseph Nelson Rose in 1920 as Cephalocereus gaumeri. In 1960, Curt Backeberg transferred it to the genus Pilosocereus.[1] The epiphet gaumeri refers to the American botanist George Franklin Gaumer (1850-1929).[3][4] Pilosocereus gaumeri has been treated under the incorrect name Pilosocereus royenii.[3][2] It has also been considered to be a subspecies of Pilosocereus polygonus, P. polygonus subsp. gaumeri.[1][5]