Kingdom: Plantae
Phylum: Anthophyta
Class: Dicotyledoneae
Order: Gentianales
Family: Apocynaceae
Genus: Amsonia
Species: tharpii
Tharp's Blue Star - Amsonia tharpii
471401
Species Extent (New Mexico)
General Description
Perennial suffrutescent herb; stems from a woody rootstock, up to 2 dm tall; leaves subsessile, crowded, up to 5 cm long and 12 mm wide, those on the lower half of the stem elliptic-lanceolate and those above linear to linear-lanceolate; flowers pale-blue or greenish-white, salverform, the tube about 15 mm long and constricted at orifice; fruit two short, thick follicles, glabrous, 25-35 mm long. Flowers April to May.
Status
Global Rank: G1
State Rank: S1
| Rank Metadata |
| State Rank:
S1
|
Rank Changed:
04/08/2015
|
| Rank Reviewed:
03/21/2023
|
| Reason:
Based on extensive negative surveys, few good EOs, and habitat threats.
|
| Ecological Factors |
| Specificity:
Moderate. Generalist or community with some key requirements scarce.
|
Range Extent:
250-1000 square km (about 100-400 square miles)
|
| Occurences:
6 - 20
|
Population Size:
10,000 - 100,000 individuals
|
| Area of Occupancy:
NHNM EO database
|
Threat Summary:
Droughts - High | Oil & gas drilling - Medium
|
State Status: E
Federal Status:
USFS Status:
BLM Status: BLM SENSITIVE
SWAP Status:
NMRP Strategy Status: Strategy Species
Observations in Natural Heritage New Mexico Database
Number of Subpopulations: 13
Number of Mapped Locations: 202
Number of Observations: 279
Observation date range: 04-28-1989
to 05-01-2024
External Links
Year
2000
Citation University of New Mexico Herbarium. 2000. Excel spreadsheet containing herbarium specimen records for LE, LT, C and SCF species.
Reference Code
D00UNM01NMUS
Year
2010
Citation Bureau of Land Management. 2010. Red Lake area surveys for Amsonia tharpii. Carlsbad Field Office.
Reference Code
D10BLM01NMUS
Year
2013
Citation Sivinski, B. 2013. Amsonia tharpii field data, summer 2013. File geodatabase to NHNM.
Reference Code
D13SIV01NMUS
Year
1999
Citation New Mexico State University Herbarium. 1999. Excel spreadsheet containing specimen records at the NMSU herbarium.
Reference Code
D99NMC01NMUS
Year
2013
Citation Roth, D. 2013. Survey results for Amsonia tharpii. NM Energy, Minerals and Natural Resouces Department.
Reference Code
E13ROT03NMUS
Year
2014
Citation Sivinski, R. 2014. Populations of Amsonia tharpii at Mescalero Ridge. Shapefiles forwarded to Natural Heritage New Mexico.
Reference Code
E14SIV01NMUS
Year
2007
Citation Howard, M. 2007. Inventory of Tharp's bluestar in the Carlsbad Area: report on 2006 field work. Bureau of Land Management, New Mexico State Office. 24p.
Reference Code
R07HOW01NMUS
Year
89
Citation S89DUNSBNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S89DUNSBNMUS
Year
90
Citation S90DUNSBNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S90DUNSBNMUS
Year
1995
Citation S95SIVSBNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S95SIVSBNMUS
Year
1996
Citation S96SIVSBNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S96SIVSBNMUS
Year
2016
Citation SEINet. 2016. Downloaded New Mexico data for tracked plants for NM Plant Conservation Strategy.
Reference Code
U16SEI01NMUS
Year
1989
Citation Dunmire, B. 1989. Plant collection records from 1989. . 6 p.
Reference Code
U89DUN02NMUS
Year
1990
Citation Dunmire, W. 1990. Dunmire plant collection unpublished notes on Amsonia tharpii collections. 1 p + map.
Reference Code
U90DUN02NMUS
Year
1992
Citation Sivinski, R. 1992. Endangered plant study performance report for USFWS. 60 pp.
Reference Code
U92SIV02NMUS
Year
1995
Citation Sivinski, R. and K. Lightfoot. 1995. State lands rare plant survey project. 1994 progress report. Section 6 report, Project #E9, segment 9 by NM Forestry and Resources Conservation Division for U.S. Fish and Wildlife Services. New Mexico Ecological Ser
Reference Code
U95SIV01NMUS
Year
1996
Citation Lea, A. 1996. NMHP cooperators plant occurrence specimen data collection forms generated from specimen information in University of New Mexico Herbarium.
Reference Code
U96LEA01NMUS
