''Buddleja iresinoides'' is a species endemic to the rocky hillsides and stream banks of

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

and northern Argentina at altitudes from 300 to 1500 m.Norman, E. M. (2000). Buddlejaceae. ''Flora Neotropica 81''. New York Botanical Garden, USA The species was correctly identified as a ''Buddleja'' and named by Hosseus in 1924.Hosseus, C. C. (1926). ''Revista Centro Farm. Cordoba'' 2 (5): 24, 1926.

Description

''Buddleja iresinoides'' 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 A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

1 – 3 m, occasionally < 5 m, high with light grey finely-striated bark. The pendulous branches are subquadrangular, tomentulose or tomentose, bearing lanceolate to ovate leaves 5 – 15 cm long by 2 – 5 cm wide on 0.5 – 1.5 cm petioles, glabrous above and tomentose, tomentulose, or even glabrescent below. The cream inflorescence is

paniculate A panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a panicle are of ...

, 10 – 15 cm long with two orders of branches, the flowers borne in small globose heads 4 – 6 mm in diameter and comprising 3 – 12 flowers. The

corolla Corolla may refer to: *Corolla (botany), the petals of a flower, considered as a unit *Toyota Corolla, an automobile model name * Corolla (headgear), an ancient headdress in the form of a circlet or crown * ''Corolla'' (gastropod), a genus of moll ...

is < 2 mm long and of differing shape depending on the sex of the plant, which led Fries to mistakenly identify two separate species (see Synonyms).

Cultivation

The shrub is not known to be in cultivation.

References

{{Taxonbar, from=Q4984658 iresinoides Flora of Argentina Flora of Bolivia Flora of South America Dioecious plants