Sporobolus cryptandrus

(Torr.) Gray

Sand Dropseed

G5Secure Found in 25 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.139134
Element CodePMPOA5V070
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderCyperales
FamilyPoaceae
GenusSporobolus
Other Common Names
sand dropseed (EN) Sporobole à fleurs cachées (FR)
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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2025-07-11
Change Date1984-09-06
Edition Date2025-07-11
Edition AuthorsN. Ventrella (2025)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Sporobolus cryptandrus is a perennial grass occurring in floodplains, woodlands, forests, disturbed sites, sandy washes, slopes, ridges, desert scrub, and grasslands of the United States and Mexico, and as an introduced taxon in the southeastern United States and elsewhere. There are several thousand estimated occurrences of this species in its native range, which are potentially threatened by development, rights-of-way construction and maintenance, invasive species, succession, and other threats in some places. Little is known about threats and trends, but with a large range extent, abundant habitat, and broad habitat preferences, Sporobolus cryptandrus is considered secure.
Range Extent Comments
Sporobolus cryptandrus occurs in North America, from Canada south to Mexico (FNA 2003). Its native range is from British Columbia east to Quebec, Canada, south throughout the western, central, and northeastern United States; it is considered introduced or potentially introduced in the southeastern United States east of the Appalachians (Weakley and the Southeastern Flora Team 2025) and in South America, Europe, and Asia (POWO 2025). In North America and Mexico, the range extent was estimated to be 27 million square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1994 and 2025 (GBIF 2025, iNaturalist 2025, NatureServe 2025, RARECAT 2025, SEINet 2025).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1994 and 2025, it is estimated that there are several thousand occurrences in North America and Mexico (GBIF 2025, iNaturalist 2025, NatureServe 2025, RARECAT 2025, SEINet 2025).
Threat Impact Comments
Sporobolus cryptandrus is potentially threatened by development, rights-of-way construction and maintenance, invasive species, succession, and other threats in some places. However, they are considered negligible given the broad range and large number of occurrences of the species and its somewhat flexible and abundant habitat, as well as no obvious intrinsic vulnerabilities.
Ecology & Habitat

Habitat

Sporobolus cryptandrus occurs in floodplains, along shores, disturbed areas, "sandy soils and washes, on rocky slopes and calcareous ridges, and along roadsides in salt-desert scrub, pinyon-juniper woodlands, yellow pine forests, and desert grasslands" from 0-2900 m in elevation (FNA 2003, Weakley and the Southeastern Flora Team 2025).
Terrestrial Habitats
Forest/WoodlandForest - ConiferForest EdgeWoodland - ConiferDesertBare rock/talus/scree
Palustrine Habitats
FORESTED WETLANDRiparian
Other Nations (2)
United StatesN5
ProvinceRankNative
ColoradoS5Yes
ArizonaSNRYes
New JerseySNANo
VermontSNANo
MississippiSNRYes
NebraskaSNRYes
PennsylvaniaS3Yes
TennesseeSNRYes
New MexicoSNRYes
IndianaSNRYes
AlabamaSNANo
VirginiaSNRYes
MaineSNRYes
NevadaS4Yes
OhioS3Yes
KansasS5Yes
OregonSNRYes
ConnecticutS1Yes
New YorkSNRYes
South DakotaSNRYes
ArkansasSNRYes
UtahSNRYes
MissouriSNRYes
CaliforniaSNRYes
TexasSNRYes
New HampshireS1Yes
North CarolinaSNRYes
IowaS4Yes
North DakotaSNRYes
IdahoSNRYes
KentuckyS4Yes
WashingtonSNRYes
OklahomaSNRYes
IllinoisS3Yes
WyomingS4Yes
MassachusettsS2Yes
MinnesotaSNRYes
MichiganSNRYes
MontanaS4Yes
Rhode IslandSNRYes
West VirginiaSNANo
WisconsinSNRYes
LouisianaSNRYes
GeorgiaSNANo
South CarolinaSNANo
CanadaN5
ProvinceRankNative
ManitobaS4Yes
New BrunswickSNANo
OntarioS4Yes
British ColumbiaS5Yes
AlbertaS4Yes
SaskatchewanS4Yes
QuebecS3Yes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (25)
Arizona (1)
AreaForestAcres
Upper Romero WsrCoronado National Forest150
California (3)
AreaForestAcres
Birch CreekInyo National Forest28,816
Excelsior (CA)Inyo National Forest45,607
Soldier CanyonInyo National Forest40,589
Montana (1)
AreaForestAcres
Big LogHelena National Forest8,954
Nevada (3)
AreaForestAcres
HuntoonHumboldt-Toiyabe National Forest36,281
Pine Grove SouthHumboldt-Toiyabe National Forest88,945
West Walker (NV)Humboldt-Toiyabe National Forest5,683
New Mexico (9)
AreaForestAcres
Black CanyonSanta Fe National Forest1,922
CajaSanta Fe National Forest5,304
Guaje CanyonSanta Fe National Forest6,104
Juan de Gabaldon GrantSanta Fe National Forest8,023
Little Dog And Pup CanyonsLincoln National Forest25,412
Little TesuqueSanta Fe National Forest815
Nichols ReservoirSanta Fe National Forest1,518
RendijaSanta Fe National Forest2,176
Virgin CanyonSanta Fe National Forest6,068
North Dakota (3)
AreaForestAcres
Long X DivideDakota Prairie Grasslands10,099
SheyenneDakota Prairie Grasslands14,537
VenloDakota Prairie Grasslands5,317
Oregon (1)
AreaForestAcres
Mountain SheepWallowa-Whitman National Forest19,457
Utah (2)
AreaForestAcres
Mt. Logan NorthWasatch-Cache National Forest18,930
Signal PeakFishlake National Forest30,889
Washington (2)
AreaForestAcres
Black CanyonOkanogan National Forest9,681
Devils GulchWenatchee National Forest24,419
References (10)
  1. Flora of North America Editorial Committee (FNA). 2003a. Flora of North America north of Mexico. Vol. 25. Magnoliophyta: Commelinidae (in part): Poaceae, part 2. Oxford Univ. Press, New York. xxv + 781 pp.
  2. Global Biodiversity Information Facility (GBIF). 2025. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2025).
  3. iNaturalist. 2025. Online. Available: https://www.inaturalist.org (accessed 2025).
  4. 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.
  5. Native Plant Trust. 2025. Go Botany website. Online. Available: https://gobotany.nativeplanttrust.org (accessed 2025).
  6. NatureServe. 2025. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  7. Plants of the World Online (POWO). 2025. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Online. Available: https://powo.science.kew.org/ (accessed 2025).
  8. <p>NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2025. Version: 2.1.1 (released April 04, 2025).</p>
  9. Southwest Environmental Information Network (SEINet). 2025. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2025).
  10. Weakley, A.S., and Southeastern Flora Team. 2025. Flora of the southeastern United States Web App. Edition of February 18, 2025. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. Online. Available: https://fsus.ncbg.unc.edu (accessed 2025).