CPC Plant Profile: Rugel's Pawpaw
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Plant Profile

Rugel's Pawpaw (Deeringothamnus rugelii)

The number of fleshy, lemon-yellow petals on these on these fragrant flowers ranges from 6-15. Photo Credit: © 1991 Steve Shirah
Description
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Annonaceae
  • State: FL
  • Nature Serve ID: 134799
  • Date Inducted in National Collection: 03/08/1989

This species is a low, deciduous woody shrub or subshrub that grows to 50 cm tall. The species has 1 to several arching stems that arise from a taproot. The alternate, leathery leaves are oblong, to oval or obovate from 1 to 7 cm long. This species is very small and easy to miss. Flowers are lemon yellow, fragrant, and ascend singly from the axils of the new shoot leaves. The number of fleshy petals ranges from 6 - 15. There are 10 - 20 stamens. The fruit is 3 - 6 cm long and turns yellow-green when ripe. Blooms from March to May (FNAI 2000; Coile 2000, NatureServe 2001; and Ward 1979).

Participating Institutions
Updates
  • 10/17/2020
  • Demographic Research

Elaine Norman of Stetson University researches this species. Helkowski (1997a, 1997b, 1998a, 1998b, 2000) has studied this species in reference to the effects of fire and other management techniques on its populations.

  • 10/17/2020
  • Cryo

In vitro cultures and cryopreserved shoot tips of several genotypes are maintained at CREW.

  • 10/17/2020
  • Tissue Culture

In vitro cultures and cryopreserved shoot tips of several genotypes are maintained at CREW.

Valerie Pence
  • 01/08/2018

As seeds are not abundant and may not be adaptable to current seed banking conditions, more genetic representation should be added to ex situ cryopreserved shoot tip collections.

Valerie Pence
  • 01/08/2018

In vitro cultures and cryopreserved shoot tips of several genotypes are maintained at CREW.

Valerie Pence
  • 01/08/2018

Tissue culture propagation and shoot tips cryopreservation protocols have been developed for this species at CREW (Cincinnati Zoo & Botanical Garden).

Nature Serve Biotics
  • 05/02/2017

Florida endemic, with restricted habitat, known only from Volusia County, Florida. Florida Natural Areas Inventory database contains 23 occurrences in its database, but almost half of these are from one managed area. Habitat is rapidly declining due to development, conversion to pine plantation, fire suppression, and possibly drainage alterations.

Dorothy M. Brazis
  • 01/01/2010

Sites at which this species historically occurred have been altered to serve as cattle pastures, road and powerline right-of ways. The species is rapidly declining due to development, conversion to pine plantation, fire suppression, and possibly drainage

Dorothy M. Brazis
  • 01/01/2010

Rugels pawpaw is known from 29 sites, and about half of those are located on public lands. (FNAI 2000)

Dorothy M. Brazis
  • 01/01/2010

Elaine Norman of Stetson University researches this species. Helkowski (1997a, 1997b, 1998a, 1998b, 2000) has studied this species in reference to the effects of fire and other management techniques on its populations.

Dorothy M. Brazis
  • 01/01/2010

No active management known to be in progress.

Dorothy M. Brazis
  • 01/01/2010

Research seed biology. Control exotic vegetation since the species is easily shaded out by other shrubs in its habitat. Map and survey the species to determine its current distribution, and keep a GIS database with the information. Protect and enhance existing populations. Conduct research on its life history characteristics. Monitor populations. Educate the public. Prevent degradation of existing habitat. Restore areas to suitable habitat. Conduct habitat-level projects. Monitor habitat/ecological processes.

Dorothy M. Brazis
  • 01/01/2010

Maintain germplasm.

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Photos
Nomenclature
Taxon Deeringothamnus rugelii
Authority (B.L. Robins.) Small
Family Annonaceae
CPC Number 1363
ITIS 18120
USDA DERU
Common Names Rugel's false pawpaw | Rugel's pawpaw | yellow squirrel-banana
Associated Scientific Names Deeringothamnus rugelii | Asimina rugelii
Distribution A Florida endemic, with restricted habitat, known only from Volusia County, Florida. Florida Natural Areas Inventory database contains 23 occurrences in its database, but almost half of these are from
State Rank
State State Rank
Florida S1
Habitat

Deeringothamnus rugelii is native to wet slash-pine flatwoods consisting of grasses and sedges. (FNAI 2000)

Ecological Relationships

No known ecological associations known for this species.

Pollinators
Common Name Name in Text Association Type Source InteractionID
Flies
Blow flies Calliphoridae Floral Visitor Link
Other
Thrips Frankliniella bispinosa Floral Visitor Link

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