Endemic Plant Facts - March 2010 - Puerto Rico Raintree

Photo of the Puerto Rico Raintree
Photo © 2006 – B. Navez

Puerto Rico Raintree (Eng.), (no Spanish common name), Brunfelsia portoricensis (Sci.) endemic plant, Luquillo mountains, Puerto Rico.

Information compiled by Alan Mowbray, USDA Forest Service,
El Yunque National Forest – 2010.

General Information:

Group- Asterids, Order- Solanales, Family- Solanaceae, Genus- Brunfelsia, Species-  B. portoricensis. Rare, endemic flowering shrub/small tree – Luquillo Forest.


Brunfelsia portoricesis is an evergreen shrub or small tree from 3 to 10 feet (0.9 to 3 meters) high – rarely growing to 15 feet (4.5 meters), with a typical trunk diameter of 3 inches (7.6 centimeters). It can be easily recognized by its elliptical, thick and leathery leaves, 3 to 6 inches (7.6 to 15 centimeters) long, shiny-green on top and dull light-green on the bottom. Flowers are large, white, 4 inches (10 centimeters) in diameter, with five rounded petals approximately 2 ½ inches (6.3 centimeters) across, and yellow-rounded fruit 1 to 1 ¼ inch (2.5 to 3 centimeters) in diameter.


The Puerto Rico Raintree is known solely from the Luquillo Mountains of eastern Puerto Rico where it rarely occurs in the lower El Yunque National Forest at elevations from 1,500 to 1,800 feet (450 to 540 meters).


Threatened by habitat loss, this species is listed as Threatened on the IUCN “Red List” of endangered species.

Additional Information:

Tropical Vegetation Specialist
USDA Forest Service
El Yunque National Forest
HC-01 Box 13490
Rio Grande, PR 00745
Telephone: 787 888 1810

Illustration/Link of the Sintenis' Holly/Ilex sintenisii
January Sintenis' Guava
Photo/Link of the Puerto Rico Zephyr Lily
February Puerto Rico Zephyr Lily
Photo/Link of the Puerto Rico Raintree
March Puerto Rico Raintree
Photo/Link of the Eugenia eggersii/Guasábara
April Eugenia eggersii
Photo/Link of the Myrica holdrigeana/Palo de Cera
May Myrica holdrigeana
Photo/Link of the Ravenia urbanii/Tortugo Prieto
June Ravenia urbanii
Photo/Link of the Saintedwood/Ternstroemia heptasepala
July Saintedwood
Photo/Link of the Schwanecke's Logwood/Palo de Candela
August Schwanecke's Logwood
Photo/Link of the Marlierea sintenisii/Buruquillo
September Marlierea sintenisii
Illustration/Link of the Melinosma obtusifolia/Arroyo
October Melinosma obtusifolia