Buddleja euryphylla is a species endemic to cloud forest

Cloud forest

A cloud forest, also called a fog forest, is a generally tropical or subtropical evergreen montane moist forest characterized by a persistent, frequent or seasonal low-level cloud cover, usually at the canopy level. Cloud forests often exhibit an abundance of mosses covering the ground and...

 in El Salvador

El Salvador

El Salvador or simply Salvador is the smallest and the most densely populated country in Central America. The country's capital city and largest city is San Salvador; Santa Ana and San Miguel are also important cultural and commercial centers in the country and in all of Central America...

, Guatemala

Guatemala

Guatemala is a country in Central America bordered by Mexico to the north and west, the Pacific Ocean to the southwest, Belize to the northeast, the Caribbean to the east, and Honduras and El Salvador to the southeast...

 and Honduras

Honduras

Honduras is a republic in Central America. It was previously known as Spanish Honduras to differentiate it from British Honduras, which became the modern-day state of Belize...

; it was first described and named by Standley

Paul Carpenter Standley

Paul Carpenter Standley was an American botanist.Standley was born in Avalon, Missouri...

 & Steyermark

Julian Alfred Steyermark

Julian Alfred Steyermark was an American botanist. His focus was on New World vegetation, and he specialized in the family Rubiaceae.- Life and work :...

 in 1947.

Description

B. euryphylla 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...

 tree 8 – 15 m high, and closely related to B. cordata

Buddleja cordata

Buddleja cordata is endemic to Mexico, growing along forest edges and water courses at elevations of 1500 – 3000 m.-Description:B. cordata is a large deciduous shrub or tree...

. The young branches are quadrangular, 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...

 only at the apex. The ovate to ovate 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 have 3 - 7 cm petiole

Petiole (botany)

In botany, the petiole is the stalk attaching the leaf blade to the stem. The petiole usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules. Leaves lacking a petiole are called sessile, or clasping when they partly surround the...

s, and are 15 – 27 cm long by 8 – 16 cm wide, glabrous

Glabrousness

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

 above, 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...

 below. The yellow inflorescences are 20 - 30 cm long by 20 - 30 cm wide, paniculate

Panicle

A panicle is a compound raceme, a loose, much-branched indeterminate inflorescence with pedicellate flowers attached along the secondary branches; in other words, a branched cluster of flowers in which the branches are racemes....

 with three to four orders of leafy-bracted

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...

 branches, bearing short cymules

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...

 each 0.4 - 0.6 cm in diameter with usually three flowers; the corolla tubes are 2 – 2.5 mm long.