Buddleja aromatica is endemic to the Cordillera Oriental

Cordillera Oriental

Cordillera Oriental from the Spanish language meaning "Eastern range" may refer to:* Cordillera Oriental * Cordillera Oriental * Cordillera Oriental * Cordillera Oriental -See also:...

 and Central

Cordillera Central

The Cordillera Central, meaning central range in Spanish, is used to refer to several mountain ranges around the world:* Cordillera Central, Andes , several mountain ranges in South America** Cordillera Central, Colombia...

 of 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...

, and northern Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

, where it grows on rocky areas amid semi-arid scrub and thorn. The species was first described and named by Rémy

Jules Rémy

Jules Achille Rémy was a French naturalist and traveller.He was born in Louvercy September 2, 1826 and died there in December 1893...

 in 1847.

Description

B. araucana 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...

 shrub, 0.5 to 2 m tall, with greyish fissured bark. The young branches are subquadrangular

Quadrangle

Quadrangle may refer to :*Quadrangle , a courtyard surrounded by a building or several buildings.*The Quadrangle, a group of five museums in Springfield, Massachusetts, including the United States' first planetarium and the Dr...

 and tomentose

Tomentose

Tomentose is a term used to describe plant hairs that are flattened and matted, forming a woolly coating known as tomentum. Often the hairs are silver or gray-colored...

, bearing sessile

Sessility (botany)

In botany, sessility is a characteristic of plants whose flowers or leaves are borne directly from the stem or peduncle, and thus lack a petiole or pedicel...

 subcoriaceous  oblong-lanceolate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

 leaves, tomentose to glabrescent

Glabrousness

Glabrousness is the technical term for an anatomically atypical lack of hair, down, or similar structures...

 above and lanose below, 2 – 6 cm long by 0.5 - 1.8 cm wide. The white or creamy white 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...

 is variable, comprising one terminal head, or with up to four additional pairs of pedunculate

Peduncle (botany)

In botany, a peduncle is a stem supporting an inflorescence, or after fecundation, an infructescence.The peduncle is a stem, usually green and without leaves, though sometimes colored or supporting small leaves...

 heads below in the axils of small leaves, each head with 20 - 30 sessile flowers; the corollas are 3 – 4 mm long.

The species is very similar to B. cordobensis

Buddleja cordobensis

Buddleja cordobensis is a species endemic to dry hillsides in the Argentine provinces of Córdoba, San Luís, and La Rioja at altitudes of 700 - 1500 m; it was first described and named by Grisebach in 1874. -Description:...

 and B. araucana

Buddleja araucana

Buddleja araucana is endemic to the semi-deserts and steppes of Patagonia, from southern Mendoza to Río Negro and Neuquen provinces in Argentina, and adjacent Chile. The species was first described and named by Philippi in 1873.-Description:...

, but differing in some vegetative and reproductive features.

Cultivation

The shrub is not known to be in cultivation. A juvenile specimen at the Logan Botanic Garden

Logan Botanic Garden

Logan Botanic Garden is a botanical garden located near Port Logan on the Rhins of Galloway, the south-western tip of Scotland.The area has a mild climate, due to the influence of the North Atlantic drift. This enables plants which would not normally survive outdoors in Scotland to flourish. There...

, Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

, perished circa 1995.