JSTOR

Isotype of Oryzopsis swallenii C. L. Hitchc. & Spellenb. [family POACEAE] Oryzopsis swallenii Hitchcock, C. Leo, #23868 1965-07-07 United States

Isotype of Otopappus acuminatus S. Watson [family ASTERACEAE] Otopappus acuminatus Pringle, C. G., #3837 1891-09-11 Mexico

Isotype of Otopappus alternifolius B. L. Rob. [family ASTERACEAE] Otopappus alternifolius Pringle, C. G., #3310 1890-10-11 Mexico

Isotype of Oxytheca parishii Parry var. cienegensis Ertter [family POLYGONACEAE] Oxytheca parishii cienegensis Reveal, James L., Reveal, Darin S., #4781 1978-07-14 United States

Isotype of Oxytropis deflexa (Pollas) DC var. pulcherrima Welsh & A. Haber [family FABACEAE] Oxytropis deflexa pulcherrima Huber, A., #1673 1994-07-18 United States

Isotype of Packera mancosana Yeatts, B. Schneid. & Al. Schneid. [family ASTERACEAE] Packera mancosana Schneider, Al, Schneider, Betty, #5077 2011-05-26 United States

Isotype of Paederia pringlei Greenm. [family RUBIACEAE] Paederia pringlei Pringle, C. G., #8682 1902-10-01 Mexico

Isotype of Paronychia wilkinsonii S. Watson [family CARYOPHYLLACEAE] Paronychia wilkinsonii Pringle, C. G., #341 1885-09-30 Mexico

Isotype of Parosela minutiflora Rose [family FABACEAE] Parosela minutiflora Pringle, C. G., #8721 1902-11-08 Mexico

Isotype of Parosela porteri A. Nelson [family FABACEAE] Parosela porteri Archibald, Jennie M., #a244 1900-01-01 United States

Isotype of Parthenium lozanianum Bartlett [family ASTERACEAE] Parthenium lozanianum Pringle, C. G., #10247 1906-05-01 Mexico

Isotype of Pavonia melanommata B. L. Rob. & Seaton [family MALVACEAE] Pavonia melanommata Pringle, C. G., #4343 1892-11-12 Mexico

Isotype of Pectis bracteata S. Watson [family ASTERACEAE] Pectis bracteata Pringle, C. G., #2403 1889-09-03 Mexico

Isotype of Pedicularis anaticeps Pennell [family OROBANCHACEAE] Pedicularis anaticeps Pennell, Francis W., Schaeffer, R. L., Jr., Smith, Margaret K., #24186 1938-08-07 United States

Isotype of Peganum texanum M. E. Jones [family ZYGOPHYLLACEAE] Peganum texanum Jones, Marcus E., #s.n. 1931-04-27 United States

Isotype of Pellaea pringlei Davenp. [family PTERIDACEAE] Pellaea pringlei Pringle, C. G., #2591 1889-10-19 Mexico

Isotype of Pennellia mcvaughii Rollins [family BRASSICACEAE] Pennellia mcvaughii Rollins, Reed C., Roby, K. W., #7423 1974-09-21 Mexico

Isotype of Penstemon aggregatus Pennell [family PLANTAGINACEAE] Penstemon aggregatus Pennell, Francis W., #5918 1915-06-26 United States

Isotype of Penstemon ambiguus Torr. ssp. laevissimus D. D. Keck [family PLANTAGINACEAE] Penstemon ambiguus laevissimus Clokey, I. W., #8113 1938-06-07 United States

Isotype of Penstemon ammophilus N. H. Holmgren & L. M. Shultz [family PLANTAGINACEAE] Penstemon ammophilus Schultz, Leila M., Anderson, John, #5349 1981-06-14 United States