Stellaria porsildii - Chinnappa
Porsild's Starwort
Taxonomic Status: Accepted
Related ITIS Name(s): Stellaria porsildii Chinnappa (TSN 507187)
Unique Identifier: ELEMENT_GLOBAL.2.132501
Element Code: PDCAR0X160
Informal Taxonomy: Plants, Vascular - Flowering Plants - Pink Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Caryophyllales Caryophyllaceae Stellaria
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Stellaria porsildii
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 11Nov2013
Global Status Last Changed: 12Jun2013
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G1 - Critically Imperiled
Reasons: A relatively newly described species, known only from the Chiricahua and Chuska mountains of southeastern and eastern Arizona, and a single peak in adjacent Pinos Altos Mountain range in southwestern New Mexico. Little is known about this shade loving, drought intolerant plant. Closely related to S. longipes and S. longifolia, and hard to distinguish from S. longigripes. Genetic studies including chromisomal numbers are needed, along with other studies to determine phenology, biology, habiat, trend and threats.
Nation: United States
National Status: N1

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Arizona (S1), New Mexico (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Current population in Arizona from the Chiricahua Mountains in Cochise County, ranges over approximately 2.3 sq km. Historical populations from the Chuska Mountains and near Mount Baldy, Apache County. Also known from the Pinos Altos Range in New Mexico.

The two disjunct populations (Chiricahua Mtns, AZ and Pinos Altos Range, NM) are separated by about 160 km.

Area of Occupancy: 1-5 4-km2 grid cells
Area of Occupancy Comments: In Arizona, extant population is from the Chiricahua Mountains, and occupies an area of about 1.13 sq km. It is unknown what area is occupied by the species on the Pinos Altos Range in New Mexico.

Number of Occurrences: 1 - 5
Number of Occurrences Comments: 2 of the 4 occurrences in Arizona are considered Historical, including the Mount Baldy population (last observed 1973) and the Chuska Mountains (last obsered 1967). There is 1 disjunct population from a single peak in New Mexico.

Number of Occurrences with Good Viability/Integrity: Unknown
Viability/Integrity Comments: The fires in summer of 2011 went through Chiricahua Mountains (Horseshoe 2) and Mount Baldy area (Wallow).

Overall Threat Impact: Unknown
Overall Threat Impact Comments: Drought reported as a threat. Effects of forest fires, livestock grazing and possible recreational impacts have not been studied. Major fire swept through Chiricahua Mountains in spring-summer 2011, along with a large fire that may have affected the historical locality on Mount Baldy.

Short-term Trend: Unknown

Long-term Trend: Unknown

Intrinsic Vulnerability Comments: Difficult to distinguish from S. longipes. During periods of severe drought, plants may not emerge.

Environmental Specificity: Moderate. Generalist or community with some key requirements scarce.
Environmental Specificity Comments: Willow thicks, open forests and woodlands on slopes of mountains. Found in partially shaded understory of pine-fir-oak habitats, to open meadows in Madrean Montane Conifer Forest communities in southern Arizona (Chinnappa 1992; Falk, Jenkins et al. 2001), while in New Mexico, typical of partially open understory, on roadsides, and under edges of forest in Rocky Mountain Montane Conifer Forest communities.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Current population in Arizona from the Chiricahua Mountains in Cochise County, ranges over approximately 2.3 sq km. Historical populations from the Chuska Mountains and near Mount Baldy, Apache County. Also known from the Pinos Altos Range in New Mexico.

The two disjunct populations (Chiricahua Mtns, AZ and Pinos Altos Range, NM) are separated by about 160 km.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AZ, NM

Range Map
No map available.

National Distribution Outside of U.S. & Canada: Mexico

U.S. Distribution by County Help
State County Name (FIPS Code)
AZ Apache (04001)*, Cochise (04003)
NM Grant (35017)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
13 Mimbres (13030202)+
15 Little Colorado headwaters (15020001)+*, Upper Gila (15040001)+, Upper Gila-Mangas (15040002)+, San Simon (15040006)+, Willcox Playa (15050201)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb, 9-18 cm tall, with narrow, needle-like leaves and inconspicuous flowers borne singly in the leaf axils. Blooms in mid-summer. This southwestern species has the most southerly distribution of any member of the Stellaria longipes complex, which is primarily circumpolar.
Duration: PERENNIAL
Terrestrial Habitat(s): Forest - Mixed, Forest Edge, Forest/Woodland
Habitat Comments: Partially open understories or edges of mixed forests of poplar, Douglas-fir (Pseudotsuga menziesii), pine, and oak. Plants are found scattered uniformly in these habitats. Also found along roadsides on steep, loamy and rocky embankments. 2400-2500 m elevation.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 23Sep1996
NatureServe Conservation Status Factors Author: Maybury, K., rev. S. Schuetze (2011-08-04)
Element Ecology & Life History Author(s): rev. S. Schuetze (2011-08-04)

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • Chinnappa, C.C. 1992. Stellaria porsildii, sp. nov., a new member of the S. longipes complex (Caryophyllaceae). Systematic Botany 17(1): 29-32.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

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