Harvard University Herbaria & Libraries

Acanthaceae
GH: 00093587 Anisacanthus insignis A. Gray Mexico: Chihuahua Parras to Chihuahua [valley of Rio Conchos b... Josiah Gregg
GH: 00093587 Anisacanthus puberulus (Torrey) Henrickson & Lott Mexico: Chihuahua Parras to Chihuahua [valley of Rio Conchos b... Josiah Gregg
GH: 00269111 Carlowrightia torreyana Wasshausen Mexico: Nuevo León Josiah Gregg
GH: 00093587 Drejera puberula Torrey Mexico: Chihuahua Parras to Chihuahua [valley of Rio Conchos b... Josiah Gregg
GH: 00263491 Dyschoriste decumbens (A. Gray) Kuntze Mexico: Coahuila Valley of Parras Josiah Gregg
GH: 00263491 Dyschoriste schiedeana decumbens (A. Gray) Henrickson Mexico: Coahuila Valley of Parras Josiah Gregg
GH: 00269111 Schaueria parvifolia Torrey Mexico: Nuevo León Josiah Gregg
Asteraceae
GH: 00004099 Achaetogeron mexicanus (A. Gray) DeJong Mexico: Josiah Gregg
GH: 00283102 Ambrosia monogyra (Torrey & A. Gray ex A. Gray) Stother & B. G. Baldwin Mexico: Near Ojito Josiah Gregg
GH: 00003865 Baccharis wrightii pyrrhopappa A. Gray Mexico: Durango N. W. of Mapimi Josiah Gregg 43
GH: 00261701 Bahia absinthifolia Bentham Mexico: Valley between Mapimi and Guapaquilla Josiah Gregg
GH: 00261701 Bahia dealbata A. Gray Mexico: Valley between Mapimi and Guapaquilla Josiah Gregg
GH: 00002443 Baileya pleniradiata Harvey & A. Gray Mexico: Josiah Gregg 32
GH: 00004099 Bellis mexicana A. Gray Mexico: Josiah Gregg
GH: 02206807 Erigeron divergens Torrey & A. Gray : North America (CA, US, MX): [data not captur... Josiah Gregg
GH: 02206805 Erigeron divergens Torrey & A. Gray Mexico: [data not captured] Josiah Gregg 142
GH: 00013885 Gymnolomia tenuifolia Bentham & Hooker f. Mexico: Near Saltillo and Rinconada Josiah Gregg
GH: 00256915 Helenium amphibolum A. Gray Mexico: Nuevo León Ditch near Terneria Fort-Monterey Josiah Gregg
GH: 00256915 Helenium quadridentatum Labillardiere Mexico: Nuevo León Ditch near Terneria Fort-Monterey Josiah Gregg
GH: 00013885 Heliomeris tenuifolia A. Gray Mexico: Near Saltillo and Rinconada Josiah Gregg
GH: 00283102 Hymenoclea monogyra Torrey & A. Gray ex A. Gray Mexico: Near Ojito Josiah Gregg
GH: 00013885 Viguiera stenoloba S. F. Blake Mexico: Near Saltillo and Rinconada Josiah Gregg
GH: 00013885 Viguiera stenoloba chihuahuensis Butterwick Mexico: Near Saltillo and Rinconada Josiah Gregg
Boraginaceae
GH: 00269273 Cordia podocephala Torrey Mexico: Nuevo León Near Monterey Josiah Gregg
GH: 00269273 Varronia podocephala (Torrey) Borhidi Mexico: Nuevo León Near Monterey Josiah Gregg
Brassicaceae
GH: 00260986 Greggia camporum A. Gray Mexico: Coahuila West of Parras Josiah Gregg
GH: 00283716 Lepidium alyssoides A. Gray Mexico: Valley of Conchor below St. Rosalia Josiah Gregg
GH: 00254992 Lesquerella fendleri (A. Gray) S. Watson Mexico: Coahuila Aguaneuva Josiah Gregg
GH: 00260986 Nerisyrenia camporum (A. Gray) Greene Mexico: Coahuila West of Parras Josiah Gregg
GH: 00254992 Physaria fendleri (A. Gray) O'Kane & Al-Shehbaz Mexico: Coahuila Aguaneuva Josiah Gregg
GH: 00254992 Vesicaria stenophylla A. Gray Mexico: Coahuila Aguaneuva Josiah Gregg
Byttneriaceae
GH: 00062845 Hermannia texana A. Gray Mexico: Coahuila Walnut Grove near Buena Vista Josiah Gregg
Caesalpiniaceae
GH: 00053022 Cassia greggii A. Gray Mexico: Nuevo León West of Rinconada Monterey May 25/47 and eas... Josiah Gregg
GH: 00053022 Chamaecrista greggii greggii Mexico: Nuevo León West of Rinconada Monterey May 25/47 and eas... Josiah Gregg
Caryophyllaceae
GH: 00037737 Drymaria polycarpoides A. Gray Mexico: Valley of Bolson de Mapimi Josiah Gregg
Convolvulaceae
GH: 01156090 Cuscuta glabrior (Engelmann) Yuncker Mexico: [data not captured] Josiah Gregg
GH: 00443889 Cuscuta indecora neuropetala (Engelmann) Hitchcock Mexico: Tamaulipas Reynosa Josiah Gregg
GH: 01156284 Cuscuta umbellata Kunth Mexico: [data not captured] Josiah Gregg
Euphorbiaceae
GH: 00061684 Bernardia fasciculata S. Watson Mexico: Plains southwest of San Pablo Josiah Gregg
GH: 00047756 Euphorbia astyla Engelmann ex Boissier Mexico: Josiah Gregg
GH: 00011309 Euphorbia floribunda Engelmann Mexico: Jalisco On a dry plain east of Guadalajara Josiah Gregg 856c
GH: 00047821 Euphorbia umbellulata Engelmann Mexico: Josiah Gregg 856
GH: 00061684 Halliophytum fasciculatum I. M. Johnston Mexico: Plains southwest of San Pablo Josiah Gregg
GH: 00061684 Tetracoccus fasciculatus (S. Watson) Croizat Mexico: Plains southwest of San Pablo Josiah Gregg
Loranthaceae
GH: 00035702 Phoradendron lanceolatum Engelmann Mexico: Rinconada Josiah Gregg
Malpighiaceae
GH: 00037806 Calcicola parvifolia (A. Jussieu) W. R. Anderson & C. Davis Mexico: Durango Plains west of Mapimi Josiah Gregg
GH: 00037806 Hiraea sericea Engelmann Mexico: Durango Plains west of Mapimi Josiah Gregg
GH: 00037806 Mascagnia cana Small Mexico: Durango Plains west of Mapimi Josiah Gregg
GH: 00037806 Mascagnia sericea Niedenzu Mexico: Durango Plains west of Mapimi Josiah Gregg
Malvaceae
GH: 00260972 Abutilon hypoleucum A. Gray Mexico: Nuevo León Josiah Gregg
GH: 00254010 Hibiscus cardiophyllus A. Gray Mexico: Tamaulipas E. of Puntiaguado Josiah Gregg
GH: 00254591 Sida abutilifolia Miller Mexico: Nuevo León Monterey Josiah Gregg
GH: 00254592 Sida abutilifolia Miller Mexico: Chihuahua Josiah Gregg
GH: 00254591 Sida diffusa Kunth Mexico: Nuevo León Monterey Josiah Gregg
GH: 00254591 Sida filicaulis setosa A. Gray Mexico: Nuevo León Monterey Josiah Gregg
GH: 00254592 Sida filicaulis setosa A. Gray Mexico: Chihuahua Josiah Gregg
Mimosaceae
GH: 00065050 Mimosa zygophylla Bentham Mexico: Coahuila Saltillo: Josiah Gregg
Oleaceae
GH: 00073737 Forestiera angustifolia Torrey Mexico: Southwest of San Pablo Josiah Gregg
GH: 00073737 Forestiera phillyreoides spathulifolia Torrey Mexico: Southwest of San Pablo Josiah Gregg
Plantaginaceae
GH: 02001328 Mecardonia procumbens (Miller) Small Mexico: [data not captured] Josiah Gregg
GH: 01803883 Plantago rhodosperma Decaisne : North America (CA, US, MX): Buena Vista Josiah Gregg
Polemoniaceae
GH: 00078929 Gilia rigidula acerosa A. Gray Mexico: Coahuila Battlefield near Buenavista Josiah Gregg
Rhamnaceae
GH: 00051528 Ziziphus lycioides A. Gray Mexico: Matamoros to Mapimi Josiah Gregg
GH: 00051529 Ziziphus lycioides A. Gray Mexico: Josiah Gregg
GH: 00051528 Ziziphus obtusifolia (Hooker ex Torrey & A. Gray) A. Gray Mexico: Matamoros to Mapimi Josiah Gregg
Rutaceae
GH: 00044026 Ptelea parvifolia A. Gray ex Hemsley Mexico: Near Marin, Monterey Josiah Gregg
Simaroubaceae
GH: 00306591 Castela Mexico: Near Maria & Andabazo Josiah Gregg
GH: 00306591 Castela erecta texana (Torrey & A. Gray) Cronquist Mexico: Near Maria & Andabazo Josiah Gregg
Verbenaceae
GH: 00135431 Verbena bracteata Lagasca & Rodriguez Mexico: Northern Mexico Josiah Gregg
GH: 00135431 Verbena bracteosa brevibracteata A. Gray Mexico: Northern Mexico Josiah Gregg
Zygophyllaceae
GH: 00043952 Sericodes greggii A. Gray Mexico: Near San Lorenzo Josiah Gregg