FWS Focus

Overview

Characteristics
Overview

Blodgettโ€™s silverbush (Argythamnia blodgettii) is a perennial, semi-woody shrub that grows up to 3 feet tall with small, inconspicuous yellow-green flowers. It grows in openings in a variety of upland habitats in South Florida, including pine rocklands.

Threats

The primary threats to Blodgettโ€™s silverbush are habitat destruction, fragmentation, and modification due to development, along with fire suppression, invasive plants, and sea level rise. One of the habitats where it grows, pine rocklands, is a globally imperiled ecosystem.

Scientific Name

Argythamnia blodgettii
Common Name
Blodgett's silverbush
FWS Category
Flowering Plants
Kingdom

Location in Taxonomic Tree

Identification Numbers

TSN:

Characteristics

Characteristic category

Life Cycle

Characteristics
Life Span

Undetermined, but likely a short-lived perennial, less than 10 years, that is capable of resprouting from underground reserves after fire.

Reproduction

Plants flower and produce seeds all year, peaking from March to June. The fruit is a three-parted capsule holding three round black seeds. Mature fruits display ballistic dispersal, flinging seeds roughly one foot from the parent. It likely forms persistent seed banks. It recruits prolifically from seed following storm surge events.

Characteristic category

Habitat

Characteristics
Habitat

Occurs in sunny openings in pine rocklands, rockland hammocks, and coastal berms, including roadsides and cleared areas of Monroe and Miami-Dade counties.

Characteristic category

Physical Characteristics

Characteristics
Size & Shape

Blodgettโ€™s silverbush is a semi-woody shrub up to 3 feet tall with small, inconspicuous green flowers. Oval, slightly hairy leaves with veins branch from the base. Multiple green, unbranched stems also often sprout from the woody base. Leaves and stems turn a deep metallic blue when broken.

Characteristic category

Similar Species

Characteristics
Similar Species

Blodgettโ€™s silverbushโ€™s inconspicuous flowers lack petals and have leafy bracts beneath the flowers, distinguishing the species from most other forbs of similar size. When sterile, leaf venation helps one to distinguish, but sterile plants are often overlooked. Leaves of croton have silvery scales, stalked glands, or star-shaped hairs.

Geography

Characteristics
Range

Present only in the Keys in Monroe and Miami-Dade counties of Florida.

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Timeline

Explore the information available for this taxon's timeline. You can select an event on the timeline to view more information, or cycle through the content available in the carousel below.

35 Items

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Habitat Conservation Plan

Five Year Review

Critical Habitat

Notice

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Listing

Jul 1, 1975

Jul 1, 1975 Listing
Review of Status of Vascular Plants
  • Publication type: CNOR
Item 1

Listing

Dec 15, 1980

Dec 15, 1980 Listing
Review of Plant Taxa for Listing as Endangered or Threatened Species
  • Publication type: CNOR
Item 2

Listing

Nov 28, 1983

Nov 28, 1983 Listing
Supplement to Review of Plant Taxa for Listing as End. or Thr. Species; 48 FR 53640-53670
  • Publication type: CNOR
Item 3

Listing

Sep 27, 1985

Sep 27, 1985 Listing
Review of Plant Taxa for Listing as End. or Thr. Species; Notice of Review; 50 FR 39526-39584
  • Publication type: CNOR
Item 4

Listing

Feb 21, 1990

Feb 21, 1990 Listing
ETWP; Review of Plant Taxa for Listing as Endangered or Threatened Species; Notice of Review; 55 FRโ€ฆ
  • Publication type: CNOR
Item 5

Listing

Sep 30, 1993

Sep 30, 1993 Listing
ETWP; Review of Plant Taxa for Listing as Endangered or Threatened Species
  • Publication type: CNOR
Item 6

Listing

Oct 25, 1999

Oct 25, 1999 Listing
Review of Plant and Animal Taxa That Are Candidates or Proposed for Listing as Endangered or Threateโ€ฆ
  • Publication type: CNOR
Item 7

Listing

Oct 30, 2001

Oct 30, 2001 Listing
ETWP; Review of Plant and Animal Species That Are Candidates or Proposed for Listing as Endangered oโ€ฆ
  • Publication type: CNOR
Item 8

Listing

Jun 13, 2002

Jun 13, 2002 Listing
Endangered and Threatened Wildlife and Plants; Review of Species That Are Candidates or Proposed forโ€ฆ
  • Publication type: CNOR
Item 9

Listing

May 4, 2004

May 4, 2004 Listing
Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Noโ€ฆ
  • Publication type: CNOR
Item 10

Listing

May 11, 2005

May 11, 2005 Listing
Endangered and Threatened Wildlife and Plants; Review of Native Species That Are Candidates or Proโ€ฆ
  • Publication type: CNOR
Item 11

Listing

Sep 12, 2006

Sep 12, 2006 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Anโ€ฆ
  • Publication type: 12m petition finding
Item 12

Listing

Sep 12, 2006

Sep 12, 2006 Listing
Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Anโ€ฆ
  • Publication type: CNOR
Item 13

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Dec 6, 2007

Dec 6, 2007 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticโ€ฆ
  • Publication type: CNOR
Item 14

Listing

Dec 6, 2007

Dec 6, 2007 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticโ€ฆ
  • Publication type: 12m petition finding
Item 15

Listing

Dec 10, 2008

Dec 10, 2008 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticโ€ฆ
  • Publication type: CNOR
Item 16

Listing

Dec 10, 2008

Dec 10, 2008 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticโ€ฆ
  • Publication type: 12m petition finding
Item 17

Listing

Nov 9, 2009

Nov 9, 2009 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 18

Listing

Nov 9, 2009

Nov 9, 2009 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 19

Listing

Nov 10, 2010

Nov 10, 2010 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 20

Listing

Nov 10, 2010

Nov 10, 2010 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 21

Listing

Oct 26, 2011

Oct 26, 2011 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 22

Listing

Oct 26, 2011

Oct 26, 2011 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 23

Listing

Nov 21, 2012

Nov 21, 2012 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 24

Listing

Nov 21, 2012

Nov 21, 2012 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 25

Listing

Nov 22, 2013

Nov 22, 2013 Listing
Review of Native Species That are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 26

Listing

Nov 22, 2013

Nov 22, 2013 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 27

Listing

Dec 5, 2014

Dec 5, 2014 Listing
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: CNOR
Item 28

Listing

Dec 5, 2014

Dec 5, 2014 Listing (Warranted But Precluded: Resubmitted)
Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Noticeโ€ฆ
  • Publication type: 12m petition finding
Item 29

Listing

Sep 29, 2015

Sep 29, 2015 Listing (Threatened)
Endangered Species Status for Chamaecrista lineata var. keyensis (Big Pine Partridge Pea), Chamaesycโ€ฆ
  • Publication type: Proposed
Item 30

Listing

Sep 29, 2016

Sep 29, 2016 Listing (Threatened)
Endangered Species Status for Chamaecrista lineata var. keyensis (Big Pine Partridge Pea), Chamaesycโ€ฆ
  • Publication type: Final
Item 31

Habitat Conservation Plan

Mar 23, 2017

Mar 23, 2017 Habitat Conservation Plan (Document Availability (non-FR))
Endangered and Threatened Wildlife and Plants; Incidental Take Permit Application and Environmentalโ€ฆ
  • Publication type: Draft
Item 32

Five Year Review

Jul 14, 2021

Jul 14, 2021 Five Year Review (Information Solicitation)
Initiation of 5-Year Status Reviews for 37 Southeastern Species; request for information
  • Publication type: Notice
Item 33

Critical Habitat

Oct 14, 2022

Oct 14, 2022 Critical Habitat
Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Chamaecrista lineโ€ฆ
  • Publication type: Proposed
Item 34

Notice

Nov 28, 2022

Nov 28, 2022 Notice
Endangered and Threatened Wildlife and Plants; Extending the Comment Periods for Four Proposed Rules
  • Publication type: Comment Period Extension
Item 35