Kingdom: Plantae
Phylum: Anthophyta
Class: Dicotyledoneae
Order: Gentianales
Family: Apocynaceae
Genus: Asclepias
Species: sanjuanensis
San Juan Milkweed - Asclepias sanjuanensis
569082
Species Extent (New Mexico)
General Description
Herbaceous perennial; stems from a subterranean woody root crown, 4-8 cm tall, prostrate to ascending; leaves 2-4 cm long, oblong-lanceolate, white tomentulose on leaf margins; inflorescence a terminal umbel with 4-15 flowers; corolla browish purple; follicle 3.5-6.5 mm long. Flowers late April and early May.
Status
Global Rank: G2G3
State Rank: S2
State Status:
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: 23
Number of Mapped Locations: 37
Number of Observations: 43
Observation date range: 06-23-1978
to 05-11-2010
External Links
Year
1989
Citation Heil, K.D., J. M. Porter, and S. L. Welsh. 1989. A new species of Asclepias (Asclepiadaceae) from northwestern New Mexico. Great Basin Nat.. 49(1):100-104.
Reference Code
A89HEI01NMUS
Year
2005
Citation McGrath, J. 2005. Field notes for San Juan milkweed (Asclepias sanjuanensis) from Jim McGrath. . 1 p.
Reference Code
E05MCG01NMUS
Year
1991
Citation DeBruin, E. 1991. Field survey to Farmington Resource area-plot #24 on 9 May 1991.
Reference Code
F91DEB77NMUS
Year
Citation Heil, K.. Biology Dept. Faculty, San Juan College, Farmington, NM.
Reference Code
PNDHEI01NMUS
Year
78
Citation S78MARSBNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S78MARSBNMUS
Year
88
Citation S88JENSJNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S88JENSJNMUS
Year
89
Citation S89HEIBYNMUS, Legacy reference. Physical copy not yet located.
Reference Code
S89HEIBYNMUS
Year
1991
Citation Hevron, B. Oct 1 1991. Results of survey for: Erigeron acomanus, Proatriplex pleiantha and monitoring study of Astragalus humillimus on the Navajo Nation. Unpublished report for EMNRD by Navajo Natural Heritage Program.
Reference Code
U91HEV01NMUS
Year
91
Citation U91NAV01NMUS, Legacy reference. Physical copy not yet located.
Reference Code
U91NAV01NMUS
Year
1992
Citation July 1992. A threatened and endangered floral search of 3000 acres, San Juan Mine, San Juan County, New Mexico. Prepared by Metric corporation
Reference Code
U92MET01NMUS
Year
1995
Citation Ladyman, J. 1995. Botanical survey for Gilia formosa along seismic line #3, in San Juan County. September 3-5, 1995. . 6 p.
Reference Code
U95LAD02NMUS
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
Year
Citation DeBruin, E. No Date. Notes on museum records at San Juan College for ^&Asclepias sanjuanensis. 1 p.
Reference Code
UNDDEB01NMUS