Palo de Violeta - Center For Plant Conservation
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Plant Profile

Palo de Violeta (Polygala cowellii)

A closeup view of the leaves of this species. Note the yellow veins and yellow border. Photo Credit: Meghan Fellows
  • Global Rank: G3 - Vulnerable
  • Legal Status: N/A
  • Family: Polygalaceae
  • State: PR
  • Nature Serve ID: 144932
  • Date Inducted in National Collection: 03/08/1989

This is a tree that grows from 30 to 40 feet in height. Very little is known about this species.

Where is Palo de Violeta (Polygala cowellii) located in the wild?


On hillsides on the island of Puerto Rico.


Found in Puerto Rico.

States & Provinces:

Palo de Violeta can be found in Puerto Rico

Which CPC Partners conserve Palo de Violeta (Polygala cowellii)?

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Nature Serve Biotics
  • 05/02/2017

Found in Puerto Rico in forests of hillsides and arroyos, mostly in the southern coastal region but scattered also through the moist limestone and lower Cordillera regions. Rare in the limestone hills of the northern coast near Toa Baja, Vega Baja, and Arecibo and in the public forest of Gu?nica.

  • 01/01/2010

fire housing charcoal-making quarrying

  • 01/01/2010

many sites, but only 1-2 plants per site; many different habitats

  • 01/01/2010

None known.

  • 01/01/2010

None known.


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Taxon Polygala cowellii
Authority (Britt.) Blake
Family Polygalaceae
CPC Number 3568
ITIS 29357
Common Names Palo de Violeta | violet tree
Associated Scientific Names Phlebotaenia cowellii | Polygala cowellii | Phlebotaenia portoricensis
Distribution Found in Puerto Rico.
State Rank
State State Rank
Puerto Rico S1
Ecological Relationships



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