ASU:SAT
310 Stanely D. Jones 7924 1992-03-01
United States, Texas, San Patricio, Corpus Christi State Park, trails over looking Lake Corpus Christi around the Old Park Pavilion
ASU:SAT
5591 Michael R. Nixon s.n. 1975-03-29
United States, Texas, Coleman, 1 mi S Leaday, along the Colorado River on FM 2134
ASU:SAT
5592 R. Dale Thomas 17952 1970-04-06
United States, Louisiana, Ouachita, Monroe, lawn on Northeast Louisiana State College campus beside Garrett Hall
BRIT:BRIT
J. B. McBryde 736 1938-02-28
United States, Texas, Denton, Sycamore Street, Denton
BRIT:BRIT
Albert Ruth 1239 1926-03-03
United States, Texas, Tarrant
BRIT:BRIT
B. C. Tharp 44082 1944-04-12
United States, Texas, Travis
BRIT:BRIT
J. B. McBryde 736 1938-02-28
United States, Texas, Denton, Sycamore Street, Denton
BRIT:BRIT
Albert Ruth 1239 1926-03-03
United States, Texas, Tarrant
BRIT:BRIT
B. C. Tharp 44082 1944-04-12
United States, Texas, Travis
BRIT:BRIT
BCNWR00043 William Reiner, Jr. 1545 2001-03-20
United States, Texas, Travis, New Salem Tract., 30.51082 -98.0276
BRIT:BRIT
BCNWR00044 William Reiner, Jr. 1596 2001-03-12
United States, Texas, Travis, New Salem Tract; Comma Motte., 30.51082 -98.0276
TEX
TEX00162386 Ira L. Wiggins 11646 1948-05-07
Mexico, Sonora, Cajon de Comajito, 10 mi E of Imuris on rd to Cananea
TEX
TEX00167436 William R. Carr 25437 2007-02-26
United States, Texas, Jim Wells, Just S of El Caro Creek on E side of S arm of Naval Auxiliary Landing Field Orange Grove, ca. 2.2 airmiles E of jct. US Rt. 281 and Co. Rd. 220, at N27o52'46.0", W098o02'51.5". San Diego NE Quadrangle., 27.87944 -98.04764
TEX
TEX00167449 William R. Carr 25461 2007-02-27
United States, Texas, Kleberg, N side of swimming pool on E side of Mitscher St. just S of Rosendahl Ave, Naval Air Station Kingsville, 2.3 airmiles NE of jct. F.M. 1717 and F.M. 1720, 1.8 airmiles ESE to E of jct. US Rt. 77 and St. Rt. 425, at N27o29'29.3", W097o48'51.6". Ricardo Qua, 27.49147 -97.81433
TEX
TEX00167469 William R. Carr|Kipp Leighton|Sonia Najera|Robert Fulginiti|C. Bales 25506 2007-03-13
United States, Texas, Jim Hogg, Along S side of Mesquite Creek just upstream from confluence with Noriecitas Creek, 1.2-1.3 airmiles SSE of St. Rt. 285 bridge over Mesquite Creek, ca. 3.7 airmiles ESE of jct. St. Rt. 285 and St. Rt. 16 at Hebbronville, on Eshelman-Vogt Ranch, at N27o16', 27.27806 -98.62381
TEX
TEX00167528 William R. Carr|Bobby Wilson 25725 2007-04-03
United States, Texas, Blanco, N side of Pedernales River ca. 1.2-1.3 airmiles NE of mouth of Millers Creek, ca. 2-3 miles upstream from (W of) Pedernales Falls State Park, at N30o18'54.1", W098o17'01.4". Pedernales Falls Quadrangle., 30.31503 -98.28372
TEX
TEX00196115 William R. Carr 22908 2004-03-21
United States, Texas, Victoria, W shoreline of Linn Lake, N end of McFaddin Ranch, 4.6-4.7 airmiles NNE of RR crossing at McFaddin. Bloomington SW Quadrangle., 28.61414 -96.97872
TEX
TEX00199848 M. Patrick Griffith 8 1999-02-27
United States, Texas, Menard, Ruins of Presidio de San Luis de las Amarillas, destroyed in 1770 by Comanche and Wichita tribesman.
TEX
TEX00199829 William R. Carr|C. Smith|Lee F. Elliott|Lisa Williams 19384 2001-03-06
United States, Texas, Atascosa, On terrace of Macho Creek, below S-most tank on Schweppe Ranch, ca. 2.6-2.7 airmiles NNE of Co. Rd. 343 crossing of Lagunillas Creek. San Miguel Quadrangle., 28.71472 -98.63722
TEX
TEX00199856 Daniel E. Atha 393 1994-02-05
United States, Texas, Bastrop, Bank of Colorado River, near US Hwy 290 bridge., 30.11667 -97.31667
TEX
TEX00199987 William R. Carr|Alan Weakley|Karen Patterson 18107 1999-04-25
United States, Texas, Blanco, Pedernales Falls State Park. Along SW bank of Pedernales River. 0.1 mi. SE of mouth of Regal Creek/Twin Falls System, ca. 2.3 -2.4 airmiles NNE of Jct. RM 3232 and RM 2766. Hammetts Crossing Quadrangle., 30.30694 -98.24583
TEX
TEX00209664 Barbara Ertter|Lindsay Woodruff 5627 1985-03-22
United States, Texas, Bee, Ca. 1 mi. N of Pawnee on Hwy 72., 28.667285 -98.002781
TEX
TEX00211218 William R. Carr|Mark Dumesnil|Kendall Keyes 21430 2003-01-23
United States, Texas, San Patricio, McGregor Ranch. Heavily grazed terrace along N bank of Nueces River, 0.4 mi. E of Missouri-Pacific RR tracks. Ca. 4.5 airmiles SSW of jct. US 77 and FM 234 at Odem., 27.89355 -97.61497
TEX
TEX00285909 William R. Carr|David Wolfe 16034 1997-04-08
United States, Texas, Val Verde, N side of SE perimeter road just E of sewage ponds, ca. 4.7 airmiles SE to ESE of jct. US 90 and FM 2523 E of Del Rio. Del Rio SE Quadrangle., 29.33944 -100.77583
TEX
TEX00285911 William R. Carr|Lee Ann Linum|Peggy Horner|Gene Dodgen 13347 1994-03-09
United States, Texas, Bexar, N side of San Antonio River ca. 1/2 mi SE of Loop 1604 bridge near Elmendorf. Gene Dodgen property. Saspamco Quadrangle.
TEX
TEX00285912 Joseph T. Painter|Willya D. Lucas|Fred A. Barkley 14220 1944-02-26
United States, Texas, Frio, Sandy bottom of the floodplain of Rio Frio north of Dilley.
TEX
TEX00285913 Rogers McVaugh 7637 1947-03-24
United States, Texas, Wilson, Steep sandy wooded banks above (west) Cibolo Cr. on route US 87, west of Stockdale.
TEX
TEX00285914 Joe C. Johnson 1154 1953-03-14
United States, Texas, Karnes, Shady bank of San Antonio River, one mile South of Panna Maria.
TEX
TEX00285918 Samuel Mills Tracy 8916 1905-03-31
United States, Texas, Nueces, Corpus Christi, Tex., 27.8006 -97.3964
TEX
TEX00285919 William R. Carr|Lt. Vaughn McCurry 12692 1993-04-27
United States, Texas, Kleberg, Ca. 1- .5 airmiles SE of Ramos Well, E of Pinto Creek, N of Cayo del Grullo. Pinto Pasture, King Ranch Training Area (Texas National Guard). Riviera Beach NW Quadrangle., 27.4125 -97.7125
TEX
TEX00285920 Raymond J. Fleetwood 6060 1963-03-19
United States, Texas, Hidalgo, Santa Ana National Wildlife Refuge, 50 ft. south of residence.
TEX
TEX00285921 William R. Carr 11609 1992-03-19
United States, Texas, Burnet, 100 ft. S of Park Road 4, 1.1-1.2 roadmiles S of its jct. with St. Rt. 29, at sponsored youth group primitive camping area, Inks Lake State Park. NW corner of Longhorn Cavern Quadrangle., 30.82917 -98.3675
TEX
TEX00285922 Gordon B. Wolcott 55 1942-04-17
United States, Texas, Williamson, Part of a clump, Southwestern University Campus, Georgetown.
TEX
TEX00285923 William R. Carr|Mary Lou Price 15175 1996-04-21
United States, Texas, Travis, N bank of Onion Creek, W of western softball field at Richard Moya Precinct 4 Park, i.e. ca. 1 mi. downstream from (E of) US Rt. 183 bridges. Lat/long det. from mylar overlay on Montopolis Quadrangle., 30.17278 -97.67278
TEX
TEX00285924 William R. Carr|Paul D. Turner 17279 1998-03-26
United States, Texas, Caldwell, S edge of Co. Rd. 135 just E of US Rt. 183 from N end of its bridge over Plum Creek just N of I-10. Harwood Quadrangle., 29.65694 -97.60167
TEX
TEX00285925 Hugh H. Duval 106 1921-03-04
United States, Texas, Bastrop, Old Turner Hotel Yard.
TEX
TEX00285926 William R. Carr|Paul D. Turner 17291 1998-03-26
United States, Texas, Gonzales, Independence Park, S side of Gonzales, E side of winding park road ca. 0.2 mi N of point where it passes under US Rt. 183 overpass. Gonzales South Quadrangle., 29.48806 -97.44694
TEX
TEX00285927 H. B. Parks s.n. 1946-04-10
United States, Texas, Brazos, College Station, Texas.
TEX
TEX00285930 William R. Carr 9489 1989-03-30
United States, Texas, San Patricio, SSE of CCC pavilion, Lake Corpus Christi State Recreation Area. Sandia Quadrangle., 28.05722 -97.88167
TEX
TEX00285928 William R. Carr 17485 1998-04-21
United States, Texas, Victoria, Riverside Park, City of Victoria, N side of Guadalupe River at horseshoe bend at S end of park, W of intersection of Memorial and John F. Lee Sts, ca. 1.0 airmile W of jct. US Rt. Bus. 59 and US Rt. 87. Victoria West Quadrangle., 28.80639 -97.02
TEX
TEX00285929 William R. Carr|David Wolfe 13382 1994-03-22
United States, Texas, Harris, W bank of Langham Creek, ca. 1500 ft. ESE of Addicks-Satsuma Rd. bridge in Bear Creek subdivision, N end of Addicks Reservoir Training Area (Texas National Guard lease of US Army Corps of Engineers property). Addicks Quadrangle., 29.85667 -95.63083
TEX
TEX00285931 Benjamin Carroll Tharp|Ecology Class s.n. 1930-03-29
United States, Texas, Calhoun, Port O'Connor.
TEX
TEX00285932 Raymond J. Fleetwood 9225 1968-04-13
United States, Texas, Brazoria, Fleetwood residence, 905 Southside Dr, Angleton, Texas.
TEX
TEX00285933 Benjamin Carroll Tharp s.n. 1936-04-07
United States, Texas, Chambers, Chambers County.
TEX
TEX00385530 Edwin R. Bogusch 1685 1927-03-06
United States, Texas, Gonzales, Ottine.
TEX
TEX00385531 R. W. Strandtmann s.n. 1937-02-28
United States, Texas, Brazos, College Station.
TEX
TEX00385532 J. F. Sinclair B-4 1940-01-01
United States, Texas, Kleberg, Kingsville.
TEX
TEX00385533 William R. Carr|S. Kuhl|Judy Teague 11787 1992-04-13
United States, Texas, Burnet, Ca. 3/4 mile due W of US Rt. 281 from a point ca. 1.8 mile N of jct. RM 1431 in Marble Falls. Marble Falls Quadrangle., 30.60833 -98.2825
TEX
TEX00385534 William R. Carr 6190 1985-03-13
United States, Texas, Travis, E side of Lamar Blvd. ca. 1/4 mile S of 29th St, Austin. Austin East Quadrangle., 30.334694 -97.781949
TEX
TEX00385535 William R. Carr|John Maresh 15106 1996-03-16
United States, Texas, Travis, Along E bank of Colorado River at W end of dirt track in NW corner of Hornsby Bend Sewage Treatment Plant property, ca. 1.7-1.8 air miles NW of FM 973 bridge. Montopolis Quadrangle., 30.212172 -97.616852
TEX
TEX00385538 Barton H. Warnock 43 1940-03-20
United States, Texas, Travis, Travis County.
TEX
TEX00385539 Mary S. Young 66 1918-03-22
United States, Texas, Travis, University Campus, Austin.
TEX
TEX00385540 Benjamin Carroll Tharp s.n. 1938-02-24
United States, Texas, Travis, Travis County.
TEX
TEX00385541 Benjamin Carroll Tharp 47076 1947-03-19
United States, Texas, Travis, East Woods Park, Austin., 30.290558 -97.731568
TEX
TEX00385542 Benjamin Carroll Tharp 44082 1944-04-12
United States, Texas, Travis, Austin., 30.267153 -97.743061
TEX
TEX00385543 William R. Carr 15902 1997-03-26
United States, Texas, Val Verde, On E side of Devils River at Grass Patch Springs, ca. 0.8 mile S of Dolan Falls. Dolan Falls Ranch, Clark Waterhole Quadrangle., 29.8725 -100.99167
TEX
TEX00385545 Barbara Ertter|K. A. Bear 5600 1985-03-14
United States, Texas, Val Verde, Pecos River Overlook on US 90 between Comstock and Langtry., 29.708053 -101.350553
TEX
TEX00385546 Joe C. Johnson 1437 1954-02-22
United States, Texas, Kenedy, Bank of Escondido Creek, US Hwy. 181, Kenedy.
TEX
TEX00434262 William R. Carr 25702 2007-03-27
United States, Texas, Kleberg, Just S of picnic area / playground near runways on E side of Naval Air Station Kingsville, ca. 2.3 airmiles E to ESE of jct. US Rt. 77 and St. Rt. 425 and 2.7 airmiles NE of jct. of F. M. 1717 and F. M. 1720. Ricardo Quadrangle., 27.49103 -97.80508
TEX
TEX00441271 William R. Carr 17264 1998-03-09
United States, Texas, Uvalde, Around mouth of Frio Bat Cave, ca. 1.5 airmiles SW to WSW of RM 2690 bridge over Frio River, S of Concan, within Annandale Ranch. Concan Quadrangle., 29.33472 -99.68472
TEX
TEX00442583 William R. Carr|Bruce Straub|Clifford Carter 22875 2004-03-25
United States, Texas, Goliad, On S side of San Antonio River, on W side of gully formed by minor tributary, ca. 1.6 airmiles W to WNW of jct. US Rt. 183 and F. M. 2441 S of Goliad, at N28o38'27.6", W097o24'30.3". Goliad Quadrangle., 28.641 -97.40842
TEX
TEX00445588 William R. Carr|Pat McNeal|David J. Rosen|Tim Schumann|Paul D. Turner|M. Underwood 24282 2006-03-28
United States, Texas, Gonzales, Along E side of San Marcos River, near U bend in river ca. 0.9-1.0 airmiles W of jct. US Rt. 183 and Park Road 11, 1.8-1.9 airmiles N of jct. FM 2091 and FM 1586 at Ottine. Ottine Quadrangle., 29.62233 -97.58786
TEX
TEX00446735 William R. Carr|Gary Hendrix|Beryl Armstrong|Robert Fulginiti 25735 2007-04-06
United States, Texas, Blanco, S bank of Pedernales River, ca. 1 mi. upstream from Pedernales Falls State Park, ca. 2.22 airmiles NE of mouth of Millers Creek, Hendrix property. Pedernales Falls Quadrangle. [databaser's note: lat/long listed as "near".]., 30.31897 -98.27406
TEX
TEX00448978 William R. Carr|Debbie Benesh 25422 2007-02-22
United States, Texas, McMullen, Northwestern part of U. S. Navy's Escondido Ranch, 1.5-1.6 airmiles NNW of ranch HQ, ca. 4.7 airmiles NE of SW corner of county. Piedra Creek SE Quadrangle., 28.10689 -98.75028
TEX
TEX00450252 Kayla M. Koenning|Advanced Biology Class 11 2008-02-21
United States, Texas, Guadalupe, Collected at the Texas Lutheran University; by baseball fields; Seguin.
TEX
TEX00454217 William R. Carr 20451 2002-03-14
United States, Texas, Bexar, Ca. 0.2-0.3 airmiles S of I-410 bridges. San Antonio Missions NHP; inside walled compound of Espada complex, on level upland on W side of San Antonio River. San Antonio Missions NHP. [Flora of San Antonio Missions NHP.]., 29.31833 -98.45056
TEX
TEX00454240 William R. Carr 20475 2002-03-20
United States, Texas, Bexar, Ca. 1/4 mile WNW of I-410 bridges. San Antonio Missions NHP; on W side of hike-and-bike trail on W edge of floodplain of San Antonio River. [Flora of San Antonio Missions NHP.]., 29.32417 -98.45528
TEX
TEX00454291 William R. Carr 20528 2002-03-26
United States, Texas, Wilson, Ca. 0.9 airmiles SE of St. Rt. 97 bridge. Rancho de las Cabras NHS; on W bank Picosa Creek ca. 0.2-0.3 mi N of mouth at San Antonio River. [Flora of San Antonio Missions NHP.]., 29.09972 -98.16472
TEX
TEX00458969 William R. Carr 29355 2011-03-28
United States, Texas, Comal, 1.8-1.9 airmiles S of Bracken Bat Cave, ca. 2.3 airmiles W of jct. R. M. 3009 and Bat Cave Rd., 29.65686 -98.36894
TEX
TEX00460196 Laura L. Hansen 6694 2010-03-27
United States, Texas, Kimble, At South Llano River State Park, around the Headquarters Building., 30.44526 -99.80403
TEX
TEX00467160 Daniella K. LaGesse|Alan W. Lievens|Jessica A. Diaz|Kaitlin Willett|Mark Gustafson 8 2014-02-24
United States, Texas, Guadalupe, Weston Ranch, N of Weil Road, Seguin., 29.62872 -98.14003
TEX
TEX00467636 William R. Carr 32459 2013-04-02
United States, Texas, Colorado, SW side of Colorado River at mouth of Harvey Creek and upstream to NW. Borden Quadrangle., 29.7323 -96.66402
TEX
TEX00469043 Cate Bergman 142 2003-02-28
United States, Texas, Lee, Lake Somerville State Park - Nails Creek Unit - by Cedar Creek camping signs, 30.29167 -96.6635
TEX
TEX00471284 William R. Carr 32471 2013-04-02
United States, Texas, Colorado, At and south of confluence of main and south forks of Harvey Creek. Borden Quadrangle., 29.72452 -96.66777
TEX
TEX00471321 William R. Carr 33864 2014-05-01
United States, Texas, Burnet, Along Alligator Creek ca. 0.3 airmiles W of low water crossing on Co. Rd. 411, Holy Communion Tract, ca. 1.0-1.1 airmiles NNW of jct. of Co. Rd. 410 (Eagle Bluff Road) and Co. Rd. 411 (McInnis Lane) north of Spicewood., 30.50564 -98.16394
TEX
TEX00473808 William R. Carr 33669 2013-03-25
United States, Texas, Travis, Near parking lot on SW side of four baseball diamonds at S end of Roy Guerrero Park, ca. 0.6 airmiles W to SWS of S end of US Rt. 183 S-bound bridge over Colorado River; Montopolis Quadrangle., 30.24244 -97.70131
TEX
TEX00476876 William R. Carr|Elena Pinto-Torres 34625 2015-04-09
United States, Texas, Kerr, On NW side of Kerrville Landfill property, ca. 0.8-0.9 airmiles NE of jct. St. Rt. 27 and St. Rt. 534 on SE side of Kerrville., 30.02442 -99.10842
TEX
TEX00479457 Laura L. Hansen 9199 2016-03-22
United States, Texas, Mason, East of Mason, along Bickenbach Avenue, 0.1 mile north of junction with Highway 29, at Comanche Creek crossing., 30.74934 -99.22172
TEX
TEX00481230 Laura L. Hansen 8815 2016-02-19
United States, Texas, Runnels, In Ballinger, northeast side of town, at Ballinger City Park and Elm Creek Lake., 31.74895 -99.9468
TEX
TEX00485090 Melissa Nelson 9 2017-04-03
United States, Texas, Guadalupe, Christensen Ranch., 29.4122 -97.9865
TEX
TEX00488944 Arthur C. Gibson 6038 2014-03-23
United States, Texas, Williamson, Weedy undeveloped lot next to storage business on Northwest Rd, Georgetown., 30.65523 -97.643532
TEX
TEX00496360 William R. Carr 35425 2016-04-14
United States, Texas, Bastrop, E side of Park Road 1-C at short side-road to gate in E fenceline just N of park HQ, ca. 0.6 airmiles NE to NNE of jct. St. Rt. 71 and F. M. 153, E edge of Buescher State Park., 30.04069 -97.15792
TEX
TEX00496597 William R. Carr 35142 2016-03-17
United States, Texas, Bastrop, W side of paved road on W side of Oak Haven Campground, ca. 0.6-0.7 airmiles N of jct. St. Rt. 71 and F.M. 153, S part of Buescher State Park., 30.04375 -97.1625
TEX
TEX00499478 William R. Carr 35297 2016-03-28
United States, Texas, Goliad, E side of San Antonio River ca. 0.5-0.6 airmiles NNW of US 183 bridge, on W side of Goliad State Park., 28.65642 -97.38975
TEX
TEX00501727 George Yatskievych|Kay Yatskievych 16-039 2016-03-06
United States, Texas, Travis, NE portion of Austin, in Lakeside subdivision on E side of Harris Branch Parkway along and near trail along small artificial lake to W of Rydalwater Lane., 30.35933 -97.61367
TEX
TEX00516214 Laura L. Hansen 8973 2016-03-04
United States, Texas, Hamilton, In Hamilton, downtown area at Pecan Creek Park, near park headquarters building, near the intersection of Ross and Bell Streets.
TEX
TEX00516322 Laura L. Hansen 8832 2016-02-29
United States, Texas, Coleman, In Coleman, north side of town at Coleman City Park, along Highway 283, 0.1 mile north of junction with Neches Street.
TEX
TEX00516412 Nathan C. Taylor 1361 2018-03-07
United States, Texas, Midland, Midland. I-20 Wildlife Preserve. In butterfly garden. +/-4 meters WGS84., 31.964684 -102.122136
TEX
TEX00530243 Laura L. Hansen 8847 2016-02-29
United States, Texas, McCulloch, McCulloch County: north of Brady, at a road side rest stop along Highway 283, 2.4 miles north of Farm Road 765., 31.42616 -99.3746
TEX
TEX00557983 Alfred Thomas Richardson|Ken King 3281A 2006-02-25
United States, Texas, Kleberg, Loyola Beach, King's Inn yard.
TEX
TEX00557984 Alfred Thomas Richardson|Ken King 3835 2012-03-02
United States, Texas, San Patricio, Sinton, by Whataburger.
TEX
TEX00570190 William R. Carr 37542 2020-04-15
United States, Texas, Bastrop, Along W edge of Colorado River ca. 1.0 airmiles NW of St. Rt. 71 bridge at Bastrop, E edge of Rabensburg property., 30.11544 -97.330972
TEX
TEX00570607 Arthur C. Gibson 7259 2020-01-27
United States, Texas, Williamson, Second Avenue and Howard, Taylor., 30.568002 -97.420422
TEX
TEX00570931 Alan W. Lievens 9824 2022-01-08
United States, Texas, Guadalupe, Seguin. 775 Burges Street., 29.56198 -97.98081
TEX
TEX00571620 Arthur C. Gibson 7594 2021-03-22
United States, Texas, Williamson, Berry Springs Park and Preserve entrance to annex beneath overpass of I35 southern frontage road, Georgetown.
TEX
TEX00573225 Cate Bergman 142 2003-02-28
United States, Texas, Lee, Lake Somerville State Park - Nails Creek Unit - by Cedar Creek camping signs., 30.291666667 -96.6635
TEX
TEX00573226 William R. Carr 25461 2007-02-27
United States, Texas, Kleberg, N side of swimming pool on E side of Mitscher St. just S of Rosendahl Ave, Naval Air Station Kingsville, 2.3 airmiles NE of jct F.M. 1717 and F.M. 1720, 1.8 airmiles ESE to E of jct US Rt. 77 and St. Rt. 425. Ricardo Quadrangle., 27.491472222 -97.814333333
TEX
TEX00162383 Guy L. Nesom|Paul Lewis 5179 1984-08-25
Mexico, Chihuahua, 2.9 mi SW of El Vergel, on Hwy 24 to Guadalupe y Calvo
TEX
TEX00162384 Guy L. Nesom|Paul Lewis 5179 1984-08-25
Mexico, Chihuahua, 2.9 mi SW of El Vergel, on Hwy 24 to Guadalupe y Calvo
TEX
TEX00162385 José García P. 9999 1978-08-26
Mexico, Estado de Mexico, Ixtapaluca, Campo Experimental de Investigaciones y Enseñanza de Zoquiapan, Km 50, carr Méx-Puebla, 8 Km S of Río Frío