Buddleja incana
Encyclopedia
Buddleja incana is endemic to Bolivia
Bolivia
Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

, Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

, Ecuador
Ecuador
Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...

 and Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

, growing in canyon bottoms along streams at elevations of 2,700 - 4,500 m. The species was first named and described by Ruiz
Hipólito Ruiz López
Hipólito Ruiz López , or Hipólito Ruiz, was a Spanish botanist known for researching the floras of Peru and Chile during an expedition under Carlos III from 1777 to 1788...

 and Pavon
José Antonio Pavón Jiménez
José Antonio Pavón Jiménez or José Antonio Pavón was a Spanish botanist known for researching the flora of Peru and Chile during an expedition under Carlos III from 1777 to 1788...

 in 1798.

Description

B. incana is a dioecious
Dioecious
Dioecy is the property of a group of biological organisms that have males and females, but not members that have organs of both sexes at the same time. I.e., those whose individual members can usually produce only one type of gamete; each individual organism is thus distinctly female or male...

 tree or shrub, 4 - 15 m tall, the trunk < 50  cm at the base, the bark brownish and furrowed. The branches are subquadrangular and tomentose
Tomentum
Tomentum may refer to the following:*In botany, a covering of closely matted or fine hairs on plant leaves. *A network of minute blood vessels in the brain.* Tomentum in zoology are a short, soft pubescence...

, and form a rounded crown. The coriaceous leaves are mostly oblong
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

, 7 - 21 cm long by 1 - 5 cm wide, the upper surface glabrescent
Glabrousness
Glabrousness is the technical term for an anatomically atypical lack of hair, down, or similar structures...

, often bullate or rugose
Rugose
Rugose means "wrinkled". It may refer to:*Idiosoma nigrum, more commonly, a black rugose trapdoor spider*Rugosa, an extinct order of coral, whose rugose shape earned it the name...

, the lower white or yellowish tomentose. The yellow to orange paniculate
Panicle
A panicle is a compound raceme, a loose, much-branched indeterminate inflorescence with pedicellate flowers attached along the secondary branches; in other words, a branched cluster of flowers in which the branches are racemes....

 inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

s have 2 - 3 orders of leafy-bracted
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

 branches bearing heads 1 - 1.5 m in diameter, each with 15 - 40 flowers, the corollas 3 - 4 mm long.

External links

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