Diplazium molokaiense

Molokai Twinsorus Fern

FWS Focus

Overview

Diplazium molokaiense, a short-lived perennial member of the Athyriaceae (ladyfern) family, has a short prostrate rhizome. The leaf stalks are 15 to 20 cm (6 to 8 in) long and green or straw-colored. The frond is thin textured, ovate-oblong, 15 to 50 cm (6 to 20 in) long and 10 to 15 cm (4 to 6 in) wide, truncate at the base, and pinnate with a pinnatifid (deeply lobed) tip. The sori are 0.8 to 1.3 cm (0.3 to 0.5 in) long and lie alongside the side veins of the pinnae.

Scientific Name

Diplazium molokaiense
Common Name
Molokai twinsorus fern
No common name
FWS Category
Ferns and Allies
Kingdom

Location in Taxonomic Tree

Identification Numbers

TSN:

Geography

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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.

42 Items

Listing

Listing

Listing

Listing

Listing

Listing

Listing

Listing

Critical Habitat

Notice

Notice

Critical Habitat

Critical Habitat

Critical Habitat

Critical Habitat

Notice

Notice

Notice

Notice

Notice

Notice

NEPA - EA

Notice

Notice

NEPA - EA

Notice

Notice

NEPA - EA

Critical Habitat

Critical Habitat

Critical Habitat

Critical Habitat

Critical Habitat

Five Year Review

Critical Habitat

Five Year Review

Critical Habitat

Critical Habitat

Technical Correction

Critical Habitat

Five Year Review

Five Year Review

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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

Jun 24, 1993

Jun 24, 1993 Listing (Endangered)
ETWP; Proposed Endangered Status for Four Ferns From the Hawaiian Islands
  • Publication type: Proposed
Item 6

Listing

Sep 30, 1993

Sep 30, 1993 Listing
ETWP; Review of Plant Taxa for Listing as Endangered or Threatened Species
  • Publication type: CNOR
Item 7

Listing

Sep 26, 1994

Sep 26, 1994 Listing (Endangered)
ETWP; Endangered Status for Four Ferns From the Hawaiian Islands
  • Publication type: Final
Item 8

Critical Habitat

Dec 18, 2000

Dec 18, 2000 Critical Habitat
Determinations of Prudency and Proposed Designations of Critical Habitat for Plant Species From theโ€ฆ
  • Publication type: Proposed
Item 9

Notice

Feb 22, 2001

Feb 22, 2001 Notice
Endangered and Threatened Wildlife and Plants; Determinations of Prudency and Proposed Designationsโ€ฆ
  • Publication type: Comment Period Reopening
Item 10

Notice

Feb 22, 2001

Feb 22, 2001 Notice
Endangered and Threatened Wildlife and Plants; Determinations of Prudency and Proposed Designationsโ€ฆ
  • Publication type: Public Hearing
Item 11

Critical Habitat

Jan 28, 2002

Jan 28, 2002 Critical Habitat
ETWP; Revised Determinations of Prudency and Proposed Designations of Critical Habitat for Plant Speโ€ฆ
  • Publication type: Proposed
Item 12

Critical Habitat

Apr 3, 2002

Apr 3, 2002 Critical Habitat
Endangered and Threatened Wildlife and Plants; Revised Determinations of Prudency and Proposed Desigโ€ฆ
  • Publication type: Proposed
Item 13

Critical Habitat

Apr 5, 2002

Apr 5, 2002 Critical Habitat
Endangered and Threatened Wildlife and Plants; Revised Determinations of Prudency and Proposed Desigโ€ฆ
  • Publication type: Proposed
Item 14

Critical Habitat

May 28, 2002

May 28, 2002 Critical Habitat
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species Frโ€ฆ
  • Publication type: Proposed
Item 15

Notice

Aug 23, 2002

Aug 23, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species Frโ€ฆ
  • Publication type: Public Hearing
Item 16

Notice

Aug 23, 2002

Aug 23, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species Frโ€ฆ
  • Publication type: Comment Period Extension
Item 17

Notice

Aug 26, 2002

Aug 26, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species Frโ€ฆ
  • Publication type: Public Hearing
Item 18

Notice

Aug 26, 2002

Aug 26, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations and Non-designations of Critical Habitatโ€ฆ
  • Publication type: Comment Period Extension
Item 19

Notice

Aug 26, 2002

Aug 26, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species Frโ€ฆ
  • Publication type: Comment Period Extension
Item 20

Notice

Sep 12, 2002

Sep 12, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designating Critical Habitat for Plant Species From tโ€ฆ
  • Publication type: Comment Period Extension
Item 21

NEPA - EA

Sep 12, 2002

Sep 12, 2002 NEPA - EA
Endangered and Threatened Wildlife and Plants; Designating Critical Habitat for Plant Species From tโ€ฆ
  • Publication type: Draft
Item 22

Notice

Sep 24, 2002

Sep 24, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species frโ€ฆ
  • Publication type: Comment Period Extension
Item 23

Notice

Sep 24, 2002

Sep 24, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designations of Critical Habitat for Plant Species frโ€ฆ
  • Publication type: Public Hearing
Item 24

NEPA - EA

Oct 2, 2002

Oct 2, 2002 NEPA - EA
Endangered and Threatened Wildlife and Plants; Designating Critical Habitat for Plant Species from tโ€ฆ
  • Publication type: Draft
Item 25

Notice

Oct 2, 2002

Oct 2, 2002 Notice
Endangered and Threatened Wildlife and Plants; Designating Critical Habitat for Plant Species from tโ€ฆ
  • Publication type: Comment Period Extension
Item 26

Notice

Nov 15, 2002

Nov 15, 2002 Notice
Endangered and threatened wildlife and plants; designations of critical habitat for plant species frโ€ฆ
  • Publication type: Comment Period Reopening
Item 27

NEPA - EA

Dec 26, 2002

Dec 26, 2002 NEPA - EA
Endangered and threatened wildlife and plants; designations of critical habitat for plant species frโ€ฆ
  • Publication type: Draft
Item 28

Critical Habitat

Jan 9, 2003

Jan 9, 2003 Critical Habitat (Not prudent at final listing)
Endangered and threatened wildlife and plants; final deisngation of critical habitat for three plantโ€ฆ
  • Publication type: CH Prudency Determination
Item 29

Critical Habitat

Feb 27, 2003

Feb 27, 2003 Critical Habitat
Endangered and Threatened Wildlife and Plants; Final Designation or Nondesignation of Critical Habitโ€ฆ
  • Publication type: Final
Item 30

Critical Habitat

Mar 18, 2003

Mar 18, 2003 Critical Habitat
Endangered and threatened wildlife and plants; final designations and nondesignations of critical haโ€ฆ
  • Publication type: Final
Item 31

Critical Habitat

May 14, 2003

May 14, 2003 Critical Habitat
Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for 60 Plant Speciesโ€ฆ
  • Publication type: Final
Item 32

Critical Habitat

Jun 17, 2003

Jun 17, 2003 Critical Habitat
Endangered and threatened wildlife and plants; final designations or nondesignations of critical habโ€ฆ
  • Publication type: Final
Item 33

Five Year Review

Apr 29, 2008

Apr 29, 2008 Five Year Review (Information Solicitation)
Initiation of 5-Year Status Reviews for 70 Species in Idaho, Montana, Oregon, Washington, and the Paโ€ฆ
  • Publication type: Notice
Item 34

Critical Habitat

Aug 2, 2011

Aug 2, 2011 Critical Habitat
Listing 23 Species on Oahu as Endangered and Designating Critical Habitat for 124 Species:Proposed rโ€ฆ
  • Publication type: Proposed
Item 35

Five Year Review

Mar 6, 2012

Mar 6, 2012 Five Year Review (Information Solicitation)
5-Year Status Reviews of 46 Species in Idaho, Oregon, Washington, Nevada, Montana, Hawaii, Guam, andโ€ฆ
  • Publication type: Notice
Item 36

Critical Habitat

Jun 11, 2012

Jun 11, 2012 Critical Habitat
Listing 38 Species on Molokai, Lanai, and Maui as Endangered and Designating Critical Habitat on Molโ€ฆ
  • Publication type: Proposed
Item 37

Critical Habitat

Sep 18, 2012

Sep 18, 2012 Critical Habitat
Endangered Status for 23 Species on Oahu and Designation of Critical Habitat for 124 Species; Finalโ€ฆ
  • Publication type: Final
Item 38

Technical Correction

Jun 23, 2015

Jun 23, 2015 Technical Correction
Endangered and Threatened Wildlife and Plants; Technical Corrections for 54 Wildlife and Plant Speciโ€ฆ
  • Publication type: Direct Final
Item 39

Critical Habitat

Mar 30, 2016

Mar 30, 2016 Critical Habitat (Revision)
Designation and Nondesignation of Critical Habitat on Molokai, Lanai, Maui, and Kahoolawe for 135 Spโ€ฆ
  • Publication type: Final
Item 40

Five Year Review

May 7, 2018

May 7, 2018 Five Year Review (Information Solicitation)
Initiation of 5-Year Status Reviews for 156 Species in Oregon, Washington, Hawaii, Palau, Guam, andโ€ฆ
  • Publication type: Notice
Item 41

Five Year Review

Mar 23, 2023

Mar 23, 2023 Five Year Review (Information Solicitation)
Endangered and Threatened Wildlife and Plants; Initiation of 5-Year Status Reviews for 133 Species iโ€ฆ
  • Publication type: Notice
Item 42