Buddleja misionum is a species endemic to dry rocky fields and roadsides in southern Paraguay

Paraguay

Paraguay , officially the Republic of Paraguay , is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Paraguay lies on both banks of the Paraguay River, which runs through the center of the...

, the Rio Grande do Sul

Rio Grande do Sul

Rio Grande do Sul is the southernmost state in Brazil, and the state with the fifth highest Human Development Index in the country. In this state is located the southernmost city in the country, Chuí, on the border with Uruguay. In the region of Bento Gonçalves and Caxias do Sul, the largest wine...

 in Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, and the provinces of Corrientes

Corrientes

Corrientes is the capital city of the province of Corrientes, Argentina, located on the eastern shore of the Paraná River, about from Buenos Aires and from Posadas, on National Route 12...

 and Misiones in 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...

; it was first described and named by Kraenzlin

Friedrich Wilhelm Ludwig Kraenzlin

Friedrich Wilhelm Ludwig Kränzlin In the history of the European study of South African orchids, Fritz Kränzlin appears after Heinrich Gustav Reichenbach describing many new orchids in the region, and revising some of the genera...

 in 1913.

Description

B. misionum 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 1 - 2 m high, with tan fissured bark. The branches are subquadrangular and covered with a dense tomentum

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...

. The 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...

 lanceolate to elliptic

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 are 5.5 - 10 cm long by 1.4 - 4 cm wide, lanose above and below. The yellow inflorescences are 15 - 30 cm long, comprising 5 - 15 pairs of heads 1 - 1.5 cm in diameter located in the axils of the terminal leaves, each head with > 20 flowers; the corolla tubes 4.5 - 5 mm long.