''Buddleja misionum'' is a species

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to dry rocky fields and roadsides in southern

Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...

, the

Rio Grande do Sul Rio Grande do Sul (, , ; "Great River of the South") is a Federative units of Brazil, state in the South Region, Brazil, southern region of Brazil. It is the Federative_units_of_Brazil#List, fifth-most-populous state and the List of Brazilian st ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, and the provinces of Corrientes and

Misiones Misiones (, ''Missions'') is one of the 23 provinces of Argentina, located in the northeastern corner of the country in the Mesopotamia region. It is surrounded by Paraguay to the northwest, Brazil to the north, east and south, and Corrientes P ...

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

; it was first described and named by Kraenzlin in 1913.Kraenzlin, F. W. L. (1916). ''repert. Spec. Nov. Regni. Veg.'' 14: 294 – 295. 1916Norman, E. M. (2000). Buddlejaceae. ''Flora Neotropica 81''. New York Botanical Garden, USA

Description

''Buddleja misionum'' is a

dioecious Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproductio ...

shrub 1 – 2 m high, with tan fissured bark. The branches are subquadrangular and covered with a dense

tomentum Tomentum may refer to: * Plant trichomes, a covering of closely matted or fine hairs on plant leaves. * Tomentum (anatomy), short, soft pubescence or a covering of fine, soft hairs. {{disambig ...

. The

sessile Sessility, or sessile, may refer to: * Sessility (motility), organisms which are not able to move about * Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant * Sessility (medicine), tumors and polyps that ...

lanceolate to elliptic leaves are 5.5 – 10 cm long by 1.4 – 4 cm wide,

lanose A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, ste ...

above and below. The yellow

inflorescences An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...

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.

Cultivation

The shrub is not known to be in cultivation.

References

misionum Flora of Argentina Flora of Brazil Flora of Paraguay Flora of South America Taxa named by Friedrich Wilhelm Ludwig Kraenzlin Dioecious plants {{Scrophulariaceae-stub