Rio Grande Butterflybush

Rio Grande Butterflybush Plant Information

Rio Grande Butterflybush grows in the following 2 states:

Arizona, Texas

Buddleja sessiliflora, commonly known as Rio Grande Butterfly-bush or Tepozn, native to southern Arizona and the lower Rio Grande Valley of Texas in the United States as well as much of central and northern Mexico excluding the Chihuahua Desert and Baja California Sur. The shrub grows in thorn savannah, forests, riparian zones, along roadsides and in disturbed areas from sea level to 2,800m. The species was first named and described by Kunth in 1818.

B. sessiliflora is a trioecious shrub or small tree 1.5 - 5m tall, the trunk reaching < 7cm diameter, bark is yellow-brown in color and fissured. The young branches are subquadrangular, yellowish, the youngest sections tomentose. The leaves vary widely, those at the base ovate, 9 - 23cm long by 5 - 14cm wide, the margins serrate, whilst the upper leaves are lanceolate or narrowly elliptic, 5 - 15cm long by 1.5 - 3cm wide, the margins entire or irregularly serrulate. The upper surfaces of both are generally glabrescent. The yellow leafy-bracted inflorescences are 6 - 25cm long, comprising sessile or short pedunculate heads 1 - 3cm in diameter, each with 10 - 35 flowers. The scent of the flowers is generally regarded as unpleasant, 'like ammonia but sweeter'. Ploidy: 2n = 76.
The species is known to be in cultivation in France at Le Jardin de Rochevieille.
Media related to Buddleja sessiliflora at Wikimedia Commons Data related to Buddleja sessiliflora at Wikispecies

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