Epiphyllum pumilum

Taxobox

---

regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Caryophyllales
familia = Cactaceae
subfamilia = Cactoideae
tribus = Hylocereeae
genus = "Epiphyllum"
species = "E. pumilum"
binomial = "Epiphyllum pumilum"
binomial_authority = Britton & Rose, 1913
synonyms = se text

"Epiphyllum pumilum" is a cactus species native to Mexico and Guatemala. The species is commonly grown as an ornamental for its beautiful, fragrant flowers in the summer.

Etymology

This specific epithet refers to the relatively small flowers of this species. History F. Eichlam found this cacti in Guatemala and sent a living specimen to the U. S. which flowered in Washington on October 3, 1912. It had previously been collected at several occasions but passed as "E. pittieri". Unaware of its variable nature, Britton and Rose described the same species again in the same paper, under the name "E. caudatum". This time from a specimen collected in Oaxaca, Mexico collected by E. W. Nelson in 1894. Later the same year, Vaupel transferred the two taxa to "Phyllocactus", an invalid name used in Europe by that time.

Origin and habitat

Mexico (Vera Cruz, Tabasco, Oaxaca, Chiapas) to the lowlands of Guatemala.

ystematics

This species is closely related to "Epiphyllum oxypetalum" and differs mainly in its smaller flowers.

Cultivation

Easily cultivated and fast growing. Needs a compost containing plenty of humus and plenty of moisture in summer. Will not tolerate low winter temperatures, around 12°C (53,5°F) will be more suitable. Best grown in semi-shade. Usually flowers in summer or in the early autumn.

Description

Stems erect, later ascending becoming pendent, to 5 m long or more, woody at base, profusely branched, primary stems, terete for 80-150 cm, secondary stems and apical parts of primary stems flat (rarely 3-angled), elongated-lanceolate, terete at base,10-60 cm long, 3-8,5 cm wide, acute to long acuminate, rather thick when mature, margins remotely toothed to indented, shallowly undulate or shallowly crenate; epidermis green. Flowers 10-15 cm long, nocturnal and fragrant; pericarpel ca 12 mm long, 8 mm thick, green, bracteoles 1 mm long, orbicular, reddish, nude or with 1 bristle, less than 1 mm long; receptacle 5-7 cm long, 5 mm thick, greenish white to reddish, bracteoles few, very small, ascending and appressed, without spines or hairs, red: outer tepals linear, 4-9 cm long, ca 5 mm wide, greenish or reddish, acute; inner tepals white, linear-lanceolate to lanceolate, acuminate, 3-6 cm long, white; stamens inserted in 2 zones, white, anthers creamy white; style slender, 4-9 cm long, white. Fruit ovoid, 2,5 cm thick, brilliant cerice, 5-7 angled, bracteoles few, ascending, pulp white, sweet, seeds minute, black.

ynonymy

:"Epiphyllum caudatum" Britton & Rose :"Phyllocactus pumilus" (Britton & Rose) Vaupel :"Phyllocactus caudatum" (Britton & Rose) Vaupel