CPC Plant Profile: Dominican Staggerbush
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Plant Profile

Dominican Staggerbush (Lyonia truncata var. proctorii)

Photo Credit: US Fish and Wildlife Service
  • Global Rank: T1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Ericaceae
  • State: PR
  • Nature Serve ID: 161102
  • Date Inducted in National Collection: 12/07/2021

Lyonia truncata var. proctorii is an evergreen shrub which may reach up to 2 meters in height. The leaves are alternate, elliptic to ovate, coriaceous, and from 0.9 to 4.5 cm long and 0.4 to 2.3 cm wide, The leaf margins may be toothed and the lower surface is sparsely to moderately lepidote and moderately to densely pubescent. The inflorescences are fasciculate with from 2 to 15 flowers. Pedicels are from 2 to 5 mm in length and sparsely pubescent. Flowers are small (0.7 to 1.6 mm in length), white, and urn-shaped. The fruit is a dry capsule, 3 to 4.5 mm in length and 2.5 to 4 mm in width, sparsely pubescent, and contain seeds approximately 2.5 mm in length. with alternating oval leaves are alternate and small, white, urn-shaped flowers. (Federal Register 1993)  

Participating Institutions
Nature Serve Biotics
  • 05/02/2017

About 63 plants are reported from 2 sites.

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Taxon Lyonia truncata var. proctorii
Authority W.S. Judd
Family Ericaceae
CPC Number 44744
ITIS 529060
Common Names Proctor's staggerbush
Associated Scientific Names Lyonia truncata var. proctorii
Distribution Approximately 63 individual plants have been reported from two locations: 18 to the northwest of the summit of Cerro Mariquita in Puerto rico and 45 just to the east of the summit. (Federal Register 1993.)
State Rank
State State Rank
Puerto Rico

Lyonia truncata var. proctorii reside in upper slopes and summits of Cerro Mariquita (elevations of 250 to 300 m) in the Sierra Bermeja Mountains of Puerto Rico. (Federal Register 1993)

Ecological Relationships

‚ÄčThe main threats to Lyonia truncata var. proctorii are the destruction of its habitat for urban development and livestock, and wildfires.

Common Name Name in Text Association Type Source InteractionID

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