Pilosocereus tillianus
| Pilosocereus tillianus | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Pilosocereus |
| Species: | P. tillianus
|
| Binomial name | |
| Pilosocereus tillianus R.Gruber & Schatzl[1]
| |
| Synonyms[1] | |
| |
Pilosocereus tillianus is a species of flowering plant in the cactus family Cactaceae, native to Venezuela (the state of Mérida).[1] It was first described in 1982.[2]
Description
Pilosocereus tillianus has green to grayish green stems with 11–12 ribs. Its branches are more-or-less upright. The areoles have spines up to 6 cm (2.4 in) long. Flowering areoles have flexible spines and silky hairs up to 3 cm (1.2 in) long in dense tufts. Non-flowering areoles have rigid spines and fewer silky hairs. The flower is 3–3.5 cm (1.2–1.4 in) long with greenish outer segments (tepals) and white inner tepals. The fruit is red.[3]
Taxonomy
Pilosocereus tillianus was first described in 1982.[2] The specific epithet tillianus is assumed to refer to Hans Till, an Austrian cactus specialist. It has been sunk into P. lanuginosus,[3] and also reduced to a subspecies of that species, P. lanuginosus subsp. tillianus.[4] Its relatively short flowers and large number (20–25) of flexible spines distinguish it from P. moritzianus which is also found in Venezuela,[3][4] and which has also been treated as a subspecies of P. lanuginosus.[4]
Distribution
Pilosocereus tillianus is native to the state of Mérida in Venezuela,[1][3] where it occurs in area of Lagunillas.[4]
References
- ^ a b c d "Pilosocereus tillianus R.Gruber & Schatzl", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2025-06-28
- ^ a b "Pilosocereus tillianus R.Gruber & Schatzl", The International Plant Names Index, retrieved 2025-06-28
- ^ a b c d Franck, Alan R.; Barrios, Duniel; Campbell, Keron C. St. E.; Lange, James; Peguero, Brígido; Santiago-Valentín, Eugenio; Rigerszki, Zoltán; Haakonsson, Jane; Gann, George D.; Cinea, William; Howe, Natalie M. M.; St. John, James; Moreno, Juan Sebastián & Clark, Cynthia A. (2019), "Revision of Pilosocereus (Cactaceae) in the Caribbean and northern Andean region", Phytotaxa, 411 (3): 129–182, Bibcode:2019Phytx.411..129F, doi:10.11646/phytotaxa.411.3.1
- ^ a b c d Guiggi, Alessandro (2010), "The Revised Taxonomy of Pilosocereus lanuginosus (Linnaeus) Byles et Rowley (Cactoideae-Cereeae from North-western South-America" (PDF), Cactology, 2: 12–13, retrieved 2025-06-26