Le Jardin de Mère Nature dans une Petite Planète - Pima County

SYNONYMY: Aristida glauca (C.G. Nees von Esenbeck) W.G. Walpers, Aristida purpurea T.
Nuttall var. glauca (C.G. Nees von Esenbeck) A.H. Holmgren & N.H. Holmgren. COMMON NAMES:
Blue Threeawn, Nealley Three-awn, Nealley’s Threeawn, Reverchon Three-awn, Reverchon Threeawn,
Tres Barbas, Tres Barbas Purpurea. DESCRIPTION: Terrestrial perennial tufted graminoid (a bunchgrass
(clumpgrass) 6 to 40 inches in height with clumps being reported that were up to 4 to 12 inches in width
at the base); the inflorescence is purple; the awns are purple; flowering generally takes place between
early January and mid-August; however, flowering may occur throughout the year under favorable
conditions (additional records: two for mid-September and two for late November). HABITAT: Within
the range of this species it has been reported from mountains; mesas; plateaus; chutes; rocky canyons;
rocky canyonsides; along bouldery-rocky-cobbly, rocky and gravelly-sandy canyon bottoms; scree; talus
slopes; rocky bases of cliffs; crevices in boulders and rocks; knolls; ledges; gravelly-sandy-clayey ridges;
ridgetops; foothills; clayey hills; rocky and rocky-gravelly hillsides; bedrock, bouldery, rocky, rockycobbly,
rocky-sandy, rocky-sandy-loamy, shaley, gravelly, gravelly-sandy, gravelly-sandy-clayey, sandy
and loamy slopes; alluvial fans; rocky, rocky-gravelly and gravelly bajadas; rocky outcrops; amongst
boulders and rocks; sandy lava flows; sand dunes; plains; sandy flats; rocky valley floors; along gravellyloamy
and sandy roadsides; along and in rocky, gravelly and sandy arroyos; along draws; rocky gullies;
rocky-gravelly ravines; springs; along and in creekbeds; riverbeds; along and in rocky, rocky-sandy,
gravelly and sandy washes; within drainages; bouldery-rocky drainage ways; sandy lakebeds; rocky
banks; edges of washes; mudflats; gravel bars; sandy beaches; sandy benches; gravelly terraces;
floodplains; along ditches; riparian areas, and disturbed areas growing in dry rocky desert pavement;
bouldery, bouldery-rocky, bouldery-rocky-cobbly, rocky, rocky-cobbly, rocky-gravelly, rocky-sandy,
gravelly, gravelly-sandy and sandy ground; rocky-sandy loam, rocky-clayey loam, cobbly-gravelly loam,
gravelly loam, gravelly-sandy loam, sandy loam, sandy-clayey loam and loam ground; rocky-sandy clay,
gravelly-sandy clay and clay ground, and sandy silty ground, occurring from 800 to 8,900 feet in
elevation in the forest, woodland, scrub, grassland, desertscrub and wetland ecological formations.
NOTES: This plant may be an attractive component of a restored native habitat, it reportedly has a
“feathery” appearance. Aristida purpurea var. nealleyi is native to southwest-central and southern North
America. *5, 6, 15 (recorded as Aristida glauca (Nees) Walp.), 16 (recorded as Aristida purpurea Nutt.
var. glauca (Nees) A. Holmgren & N. Holmgren), 33 (recorded as Aristida glauca (Nees) Walp., Page
243), 43 (081809), 46 (recorded as Aristida glauca (Nees) Walp., Page 120), 48 (species), 63 (081809),
77, 85 (092709 - color presentation of dried material), 105 (species), 138 (recorded as Aristida glauca)*
Aristida ternipes A.J. Cavanilles: Spidergrass
COMMON NAMES: Aristida Grass, Spider Grass, Spidergrass, Spider Threeawn, Three Awn,
Three-awn, Threeawn, Zacate Arana. DESCRIPTION: Terrestrial perennial tufted graminoid (a
bunchgrass (clumpgrass) 10 to 79 inches in height, one plant was described as being 4 inches in diameter
at the base and 52 inches in height); flowering generally takes place between mid-March and mid-
December. HABITAT: Within the range of this species it has been reported from mountains; boulderycobbly
mesas; plateaus; rock cliffs; rocky canyons; rocky canyon walls; along rocky canyon bottoms;
rocky talus; crevices in rocks; rock ledges; rocky ridges; rocky ridgetops; meadows; foothills; rocky,
rocky-gravelly, gravelly-sandy, gravelly-clayey-loamy and sandy hills; rocky hillsides; bouldery, rocky,
rocky-gravelly, rocky-gravelly-clayey, gravelly, sandy, sandy-loamy and sandy-clayey slopes; alluvial
fans; gravelly and sandy bajadas; rocky outcrops; amongst boulders and rocks; gravelly plains; boulderysandy,
rocky-loamy, gravelly, sandy and silty flats; valley floors; coastal plains; railroad right-of-ways;
along bouldery-rocky and gravelly roadsides; along arroyos; along draws; ravines; along streams;
streambeds; along bouldery creeks; rocky creekbeds; along rivers; along and in rocky and sandy washes;
within drainages; banks of creeks; along edges of washes; sandy beaches; benches; rocky terraces; sandy
floodplains; mesquite bosques; along fencelines; stock tanks (charcos or repressos); ditches; sandy
riparian areas, and disturbed areas growing in dry bouldery, bouldery-rocky, bouldery-cobbly, boulderysandy,
rocky, rocky-gravelly, rocky-sandy, gravelly, gravelly-sandy and sandy ground; rocky loam, rockygravelly
loam, gravelly-clayey loam, sandy loam, sandy-clayey loam and humus loam ground; sandy clay