Amblystegiaceae FH: 00060261 Leptodictyum riparium (Hedwig) Warnstorf Mexico: Nuevo León Sierra Madre Oriental, El Diente Canyon, Sou... F. W. Pennell 16880b 1934
FH: 00843500 Leptodictyum riparium (Hedwig) Warnstorf Mexico: Nuevo León [data not captured] F. W. Pennell 16880a 1934-6-19
FH: 00060261 Leptodictyum sp. Mexico: Nuevo León Sierra Madre Oriental, El Diente Canyon, Sou... F. W. Pennell 16880b 1934
Apocynaceae GH: 02379165 Mandevilla karwinskii (Müller Argoviensis) Hemsley Mexico: Nuevo León "Taray" to Rio Santa Ana, Pablillo, southeas... F. W. Pennell 17150 1934-7-2
GH: 02379155 Mandevilla karwinskii (Müller Argoviensis) Hemsley Mexico: Coahuila Sierra Madre Oriental; Mt. south of Saltillo F. W. Pennell 17309 1934-7-10
GH: 02379154 Mandevilla karwinskii (Müller Argoviensis) Hemsley Mexico: San Luis Potosí San Pedro; Sierra Madre Oriental; mt. above ... F. W. Pennell 17738 1934-7-29
GH: 02379153 Mandevilla karwinskii (Müller Argoviensis) Hemsley Mexico: Nuevo León "Taray", to Rio Santa Ana, Pablillo, southea... F. W. Pennell 17217 1934-7-2
Aristolochiaceae GH: 00242957 Aristolochia Linnaeus Mexico: México Pablillo, South of Galeana, Sierra Madre Ori... F. W. Pennell 16998 1934-6-26
GH: 00242957 Aristolochia secunda Pfeifer Mexico: México Pablillo, South of Galeana, Sierra Madre Ori... F. W. Pennell 16998 1934-6-26
Asclepiadaceae GH: 00571233 Asclepias coulteri A. Gray Mexico: San Luis Potosí Las Tablas, Sierra Madre Oriental F. W. Pennell 18054 1934-8-9
Asteraceae GH: 01237119 Artemisia ludoviciana Nuttall Mexico: Chihuahua Calera, East of San Isidro F. W. Pennell 18809 1934-9-15
GH: 01237186 Artemisia sp. Mexico: Durango Carpintero; Sierra Madre Occidental F. W. Pennell 18200 1934-8-25
GH: 01237183 Artemisia sp. Mexico: Chihuahua Majalca, northwest of Chihuahua F. W. Pennell 19289 1934-9-29
GH: 01237182 Artemisia sp. Mexico: Chihuahua Hacienda "San Pedro", 10 km, Southwest of Mi... F. W. Pennell 18826 1934-9-16
Bartramiaceae FH: 00516686 Bartramia glaucula Cardot Mexico: Durango [data not captured] F. W. Pennell 18400j 1934-8-29
FH: 00304440 Philonotis glaucescens (Hornschuch) Brotherus Mexico: Nuevo León [data not captured] F. W. Pennell 16867b.1 1934-6-26
Boraginaceae GH: 00435552 Mimophytum cardiophyllum (A. Gray ex Hemsley) R. R. Mill ex Holstein Mexico: Coahuila Sierra Guadalupe, South of La Cuchilla; Sier... F. W. Pennell 17354 1934-7-15
GH: 00435552 Mimophytum sp. Mexico: Coahuila Sierra Guadalupe, South of La Cuchilla; Sier... F. W. Pennell 17354 1934-7-15
GH: 00435550 Omphalodes cardiophylla A. Gray Mexico: Nuevo León El Diente Canyon, South of Monterrey; Sierra... F. W. Pennell 16862 1934-6-19
Brachytheciaceae FH: 00060261 Brachythecium pennellii E. B. Bartram Mexico: Nuevo León Sierra Madre Oriental, El Diente Canyon, Sou... F. W. Pennell 16880b 1934
FH: 00787767 Brachythecium pennellii E. B. Bartram Mexico: [data not captured] F. W. Pennell 16867a 1934-6-19
Brassicaceae GH: 00351943 Romanschulzia elata Rollins Mexico: San Luis Potosí F. W. Pennell 17844 1934-7-30
GH: 02463507 Thelypodiopsis retrofracta (Rollins) Rollins Mexico: Zacatecas Aranzazu; Sierra Madre Oriental; below A. F. W. Pennell 17443 1934-7-19
Bromeliaceae GH: 01818012 Tillandsia recurvata (Linnaeus) Linnaeus Mexico: Nuevo León Puerto de los Pastores, southeast of Galeana... F. W. Pennell 17242 1934-7-4
GH: 01818378 Tillandsia usneoides Linnaeus Mexico: Nuevo León "Encinal", Pabillo, southeast of Galeana. Si... F. W. Pennell 17144 1934-7-1
Bryaceae FH: 00787369 Brachymenium sp. Mexico: Durango [data not captured] F. W. Pennell 18400g 1934-8-29
FH: 00797687 Bryum andicola Hooker Mexico: Nuevo León [data not captured] F. W. Pennell 17100C 1934-6-26
Crassulaceae GH: 01990791 Sedum mellitulum Rose Mexico: Chihuahua Strawberry Creek, Northeast of Colonia Pache... F. W. Pennell 19181 1934-9-22
GH: 01988931 [None] Mexico: Durango 1-2 km S. of Metates. F. W. Pennell 18462 1934-8-29
GH: [None] Mexico: Durango 1-2 km S. of Metates. F. W. Pennell 18462 1934-8-29
Dicranaceae FH: 00780723 Orthodicranum flagellare (Hedwig) Loeske Mexico: Durango [data not captured] F. W. Pennell 18400m 1934-8-29
Geraniaceae GH: 00043623 Geranium coloratum C. V. Morton Mexico: Durango El Salto (Aserraderos), 2570-2800 m F. W. Pennell 18334 1934-8-28
Grimmiaceae FH: 00557730 Grimmia longirostris Hooker Mexico: Durango [data not captured] F. W. Pennell 18400d 1934-8-29
Hypnaceae FH: 00840968 Hypnum cupressiforme lacunosum Bridel Mexico: Coahuila [data not captured] F. W. Pennell 17371a 1934-7-15
Lamiaceae GH: 00001182 Hedeoma patrinum W. S. Stewart Mexico: Zacatecas Sierra Madre Oriental, rocky limestone summi... F. W. Pennell 17432 1934-7-18
GH: 00001188 Hedeoma subaequale Epling Mexico: San Luis Potosí Sierra Madre Oriental, rocky limestone mt. a... F. W. Pennell 17731 1934-7-29
GH: 00001721 Salvia pennellii Epling Mexico: San Luis Potosí Above Potrero, Sierra de Catorce, W of Santa... F. W. Pennell 17538 1934-7-24
Lentibulariaceae GH: 01974331 Pinguicula macrophylla Kunth Mexico: San Luis Potosí Sierra Madre Oriental. km. 42 (eastern slope... F. W. Pennell 17781 1934-8-1
GH: 01976235 Utricularia livida E. H. F. Meyer Mexico: San Luis Potosí Sierra Madre Oriental. Sierra de San Migueli... F. W. Pennell 17714 1934-7-28
Linaceae GH: 01248268 Linum aristatum Engelmann Mexico: Durango El Salto (Aserraderos); Sierra Madre Occiden... F. W. Pennell 18565 1934-9-1
GH: 01248267 Linum aristatum Engelmann Mexico: Chihuahua Llanura de Babicora; Sierra Madre Occidental F. W. Pennell 19016 1934-9-19
GH: 01248281 Linum cruciata Planchon Mexico: Nuevo León "Alamar", Pablillo, southeast of Galeana; Si... F. W. Pennell 17174 1934-7-2
GH: 01248303 Linum lasiocarpum Rose Mexico: Nuevo León Sierra Madre Oriental; El Diente Canyon, sou... F. W. Pennell 16870 1934-6-19
GH: 01248304 Linum lewisii Pursh Mexico: Durango w. of El Salto; Sierra Madre Occidental; El ... F. W. Pennell 18563 1934-9-1
GH: 01248399 Linum pringlei S. Watson Mexico: Chihuahua First Meadow, s. of Colonia Garcia. Sierra M... F. W. Pennell 19130 1934-9-23
GH: 01248537 Linum schiedeanum Chamisso & Schlechtendal Mexico: San Luis Potosí Alvarez, Sierra de Alvarez; Sierra Madre Ori... F. W. Pennell 17854 1934-7-30
GH: 01248508 Linum schiedeanum Chamisso & Schlechtendal Mexico: San Luis Potosí Alvarez, Sierra de Alvarez; Sierra Madre Ori... F. W. Pennell 17807 1934-7-30
GH: 01248507 Linum schiedeanum Chamisso & Schlechtendal Mexico: San Luis Potosí F. C. Potosi & Rio Verde, Sierra de Alvarez F. W. Pennell 17762 1934-8-1
GH: 01248491 Linum schiedeanum Chamisso & Schlechtendal Mexico: San Luis Potosí Santa Ana, above Potrero, Sierra de Catorce;... F. W. Pennell 17550 1934-7-24
GH: 01248490 Linum schiedeanum Chamisso & Schlechtendal Mexico: Zacatecas Concepcion del Oro; Sierra Madre Oriental F. W. Pennell 17426 1934-7-18
GH: 01248556 Linum sp. Mexico: Nuevo León Pablillo, south of Galeana; Sierra Madre Ori... F. W. Pennell 16976 1934-6-26
Orchidaceae GH: 00354186 Spiranthes cinnabarina (La Llave & Lexarza) Hemsley Mexico: Chihuahua Calera, east of San Isidro F. W. Pennell 18802 1934-9-15
Orobanchaceae GH: 00053987 Castilleja perelegans G. L. Nesom Mexico: Durango Metates, north of Cueva, Sierra Madre Occide... F. W. Pennell 18394 1934-8-29
GH: 00091736 Seymeria pennellii B. L. Turner Mexico: Durango Metates, north of Cueva, rich slopes in pine... F. W. Pennell 18433 1934-8-29
Orthotrichaceae FH: 00521423 Zygodon campylophillus Müller Halle Mexico: Nuevo León [data not captured] F. W. Pennell 17100b 1934-6-26
Piperaceae GH: 01983984 Peperomia berlandieri Miquel Mexico: Nuevo León "Encinal", Pablillo, southeast of Galeana. S... F. W. Pennell 17030 1934-6-26
Poaceae GH: 00061271 Muhlenbergia lucida Swallen Mexico: Chihuahua "Barranca Colorad", Sierra Gazachic 35 km. s... F. W. Pennell 18955 1934-9-16
GH: 00061272 Muhlenbergia subaristata Swallen Mexico: Durango Along river, west of El Salto, 2600-2650 m. F. W. Pennell 18972 1934-9-1
Polygonaceae GH: 02362071 Persicaria longiseta (Bruijn) Kitagawa USA: Pennsylvania [data not captured] F. W. Pennell 1934-10-30
Pottiaceae FH: 00898993 Tortula fragilis Taylor Mexico: Coahuila [data not captured] F. W. Pennell 17371b.1 1934-7-15
Ptychomitriaceae FH: 00079942 Ptychomitrium serratum Bruch & Schimper Mexico: Nuevo León Pabilillo, South of Galeana, Sierra Madre Or... F. W. Pennell 17100d 1934-6-26
FH: 00079943 Ptychomitrium serratum Bruch & Schimper Mexico: Coahuila Sierra Guadalupe, South of La Cuchilla, Sier... F. W. Pennell 17371b 1934-7-15
Ranunculaceae GH: 00273698 Thalictrum grandifolium S. Watson Mexico: San Luis Potosí Las Canoas: F. W. Pennell 17910 1934-8-6
Resedaceae GH: 02467826 Reseda luteola Linnaeus Mexico: San Luis Potosí Estacion de Catorce; Sierra Madre Oriental; ... F. W. Pennell 17556 1934-7-24
Rhytidiaceae FH: 01146212 Rhytidium rugosum (Hedwig) Kindberg Mexico: Coahuila [data not captured] F. W. Pennell 17371c 1934-7-15
Scrophulariaceae GH: 02224002 Verbascum blattaria Linnaeus Mexico: San Luis Potosí F. C. Potosi & Rio Verde, Sierra de Alvarez.... F. W. Pennell 17773 1934-7-30
Selaginellaceae GH: 00022078 Selaginella porrecta Weatherby Mexico: Nuevo León "Alaman" Pablillo, southeast of Galeana, alt... F. W. Pennell 17198 1934-7-2
Solanaceae GH: 00987808 Capsicum ciliatum Kunth ex Kuntze Mexico: San Luis Potosí Los Canoas; Sierra Madre Orental F. W. Pennell 17941 1934-8-6
GH: 00815189 Nicotiana glauca Graham Mexico: Nuevo León Rio Santa Catarina; Sierra Madre Oriental F. W. Pennell 16807 1934-6-17
GH: 00815228 Nicotiana obtusifolia Mertens & Galeotti Mexico: Zacatecas Aranzazu; Sierra Madre Oriental F. W. Pennell 17444 1934-7-19
GH: 00815229 Nicotiana obtusifolia Mertens & Galeotti Mexico: Nuevo León Rio Santa Catarina; Sierra Madre Oriental F. W. Pennell 16787 1934-6-17
Thuidiaceae FH: 00836190 Haplocladium microphyllum (Hedwig) Brotherus Mexico: Nuevo León [data not captured] F. W. Pennell 17100a 1934-6-26
FH: 01134462 Thuidium recgonitum philibertii (Limpricht) Dixon Mexico: Nuevo León [data not captured] F. W. Pennell 1934-6-26
