Sabal etonia Nash Isotype
Sabatia arenicola Greenman Isotype
Sabazia anomala Greenman Isotype
Sabazia densa Longpre Holotype
Sabazia leavenworthii Longpre Holotype
Sabazia liebmannii var. hintonii Longpre Isotype
Sabazia liebmannii var. michoacana (Robins) Longpre Unknown
Sabazia liebmannii var. ovatifolia Longpre Holotype
Sabazia microspermoides Longpre Unknown
Sabazia mullerae S. F. Blake Unknown
Sabazia multiradiata (Seaton) Longpre Unknown
Sabazia sarmentosa var. lancifolia Longpre Unknown
Sabazia subnuda Robinson & Seaton Isotype
Sagina nodosa ssp. borealis G. E. Crow Holotype
Sagittaria ambigua J. G. Smith Unknown
Sagittaria isoetiformis J. G. Smith Isosyntype
Salix chlorolepis Fernald Isotype
Salix flucescens var. hebecarpa Fernald Isotype
Salix jaliscana M. E. Jones Isotype
Salix laurentiana Fernald Isotype
Salix ormsbyensis von Seemen Isotype
Salix pringlei Rowlee Isotype
Salix rostrata var. luxurians Fernald Isosyntype
Salvia ancistrocarpha Fernald Isotype
Salvia arthrocoma Fernald Isotype
Salvia artrocaulis Fernald Isotype
Salvia betulifolia var. chasmema Reveal & Hess Isotype
Salvia brachyodonta Briquet Isotype
Salvia chalarothyrsa Fernald Isotype
Salvia chapalensis Briquet Isotype
Salvia cinnabarina var. pringleana Briquet Isotype
Salvia comosa Peyr. var. hypoglauca Fernald. Isotype
Salvia connivens Epling Isotype
Salvia cyanicephala Epling Isotype
Salvia flaccidifolia Fernald Isotype
Salvia guadalajarensis Briquet Isotype
Salvia hintonii Epling Isotype
Salvia hispanica var. chionocalyx Fernald Isotype
Salvia igualensis Fernald Isotype
Salvia iodantha Fernald Isotype
Salvia jacobi Epling Isotype
Salvia jaliscana Briquet Isotype
Salvia jorgehintoniana Ramamoorthy ex B.L. Turner Isotype
Salvia lilacina Fernald Isotype
Salvia lozani Fernald Isotype
Salvia michoacana Fernald Isosyntype
Salvia molina Fernald Isosyntype
Salvia multiramea Fernald Isosyntype
Salvia palealis Epling Isotype
Salvia pannosa Fernald Isotype
Salvia platyphylla Briquet Isotype
Salvia polystachya var. philippensis Fernald Isosyntype
Salvia polystachya var. potosina Briquet Isotype
Salvia pringlei Robinson & Greenman Isotype
Salvia rhyacophila (Fernald) Epling Isotype
Salvia saltuensis Fernald Isosyntype
Salvia setulosa Fernald Isosyntype
Salvia simulans Fernald Isotype
Salvia tehuacana Fernald Isotype
Salvia tiliaefolia var. rhyacophila Fernald Isotype
Salvia urolepis Fernald Isosyntype
Salvia urolepis Fernald Isosyntype
Samolus alyssoides Heller Isotype
Sargentia greggii Watson Isotype
Saxifraga bracteosa Suksdorf Isotype
Saxifraga fragosa Suksdorf Unknown
Schizocarpum parviflorum Robinson & Greenman Isotype
Schkuhria glomerata Robinson & Seaton Syntype
Schkuhria platyphylla Robinson & Greenman Isotype
Schoenocaulon pringlei Greenman Isotype
Schoepfia pringlei Robinson Isotype
Schultesia mexicana S. Watson Isotype
Scirpus debilis Pursh var. williamsii Fernald Isotype
Scirpus occidentalis var. congesta Farw. Syntype
Scirpus orbicephalus A. A. Beetle Isosyntype
Scirpus pringlei Britton Isosyntype
Sclerocarpus schiedeanus var. elongus Greenman Syntype
Scoparia grandiflora Nash Isotype
Scorzonella lepidota Heller Isotype
Scutellaria atrocyanea Epling & Jativa Isotype
Scutellaria hispida B. L. Robinson Isotype
Scutellaria sanhedrenis Heller Isotype
Scutellaria suffrutescens Watson Isotype
Sebastiania pringlei Watson Isotype
Sedum calcaratum Rose Isotype
Sedum diffusum Watson Isosyntype
Sedum frutescens Rose Isotype
Sedum jaliscanum Watson Isosyntype
Sedum Lenophylloides Rose Isotype
Sedum longipes Rose Isotype
Sedum naviculare Rose Isotype
Sedum oaxacanum Rose Isotype
Sedum rhodocarpum Rose Isotype
Sedum tuberculatum Rose Isosyntype
Selaginella extensa Underwood Isotype
Selaginella reflexa Underwood Isolectotype
Selaginellla cinerascens A. A. Eaton Unknown
Selloa breviligulata Longpre Holotype
Senecio candidissimus Greene Isolectotype
Senecio candidissimus Greene Isolectotype
Senecio chapalensis S. Watson Isotype
Senecio ctenophyllus Greenman Isotype
Senecio cyclophyllus Greenman Isotype
Senecio cyclophyllus Greenman Isotype
Senecio durangensis var. atrapiculatus T. M. Barkley Isotype
Senecio gracilipes B. L. Robinson & Greenman Isotype
Senecio guadalajarensis B. L. Robinson Isotype
Senecio iodanthus Greenman Isotype
Senecio pectinatus A. Nelson Isotype
Senecio platypus Greenman Isotype
Senecio pringlei A. Gray Isotype
Senecio prionopteris Robinson & Greenman Isotype
Senecio pterocaulis Greenman Isotype
Senecio scalaris Greene Isolectotype
Senecio townsendii Greenman Isotype
Senecio townsendii Greenman Isotype
Seymeria deflexa Eastwood Isotype
Sida helleri Rose Isotype
Sida rubro-marginata Nash Isosyntype
Sida wendtii Fryxell Isotype
Sidalcea calycosa Jones Isotype
Sidalcea hydrophila Heller Isotype
Sieglingia congesta L. H. Dewey Isotype
Sieglingia congesta L. H. Dewey Isotype
Sieglingia pulchella var. parviflora Vasey Isotype
Sigesbeckia repens Robinson & Greenman Isotype
Silene dilatata Suksdorf Isotype
Silene tetragyna Suksdorf Isotype
Simsia adenophora (Greenm.) S.F. Blake Isotype
Simsia cronquistii H. Robinson & R. D. Brettell Isotype
Simsia spooneri Panero & E. E. Schilling Isotype
Simsia sylvicola Panero & E. E. Schilling Isotype
Sinclairia cervina (B.L. Robins.) B. Turner Isotype
Sinclairia klattii (B.L.Rob.& Greenm.) H.Rob.& Brettell Isotype
Sinclairia pringlei (B.L.Rob.& Greenm.) H.Rob.& Brettell Isotype
Sinclairia similis (McVaugh) H. Robs. & Brettell Unknown
Sisyrinchium alatum var. angustissimum Robinson & Greenman Isotype
Sisyrinchium apiculatum E. P. Brickn. Isotype
Sisyrinchium bracteatum Greenman Isosyntype
Sisyrinchium maritimum Heller Isotype
Sisyrinchium palmeri Greenman Isosyntype
Sisyrinchium polycladum Robinson & Greenman Isotype
Sisyrinchium pringlei Robinson & Greenman Isotype
Sisyrinchium tenuifolium var. seatonii Greenman Isosyntype
Smilax pringlei Greenman Isosyntype
Smilax smallii Morong Isotype
Solanum cardiophyllum var. pliozygum Bitter ex Fedde Isotype
Solanum deflexum Greenman Isosyntype
Solanum jaliscanum Greenman Isosyntype
Solanum lambii Fernald Isotype
Solanum longipedicellatum Bitter Isotype
Solanum polyadenium Greenman Isotype
Solidago jejunifolia E. S. Steele Isotype
Solidago laeta Greene Isotype
Solidago plumosa Small Isotype
Solidago venulosa Greene Isotype
Spermacoce pringlei Watson Isotype
Spilanthes disciformis var. phaneractis Greenman Isolectotype
Spiraea discolor var. glabrescens Greenman Isosyntype
Spiranthes aurantica var. acuminata Robinson & Seaton Isosyntype
Spiranthes eriophora Robinson & Greenman Isotype
Spiranthes oaxacana Robinson & Greenman Isotype
Spiranthes tenuiflora Greenman Isotype
Sporobolus capillaris Vasey Isosyntype
Sporobolus depauperatus var. filiformis Beal Lectotype
Sporobolus depauperatus var. filiformis Beal Syntype
Sporobolus macrospermus Scribner Isotype
Sporobolus patens Swallen Isotype
Sporobolus silveanus Swallen Isotype
Sporobolus silveanus Swallen Isotype
Stachys aristata Greenman Isotype
Stachys boraginoides var. glandulosa Greenman Isotype
Stachys pringlei Greenman Isotype
Stachys ramosa Heller Isotype
Stachys rivularis Heller Isotype
Stanleya albescens Jones Isotype
Stanleya elata Marcus E. Jones Unknown
Statice traceyi Gandoger Isolectotype
Stellaria washingtoniana Robinson Isotype
Stemmadenia tomentosum Greenman Isotype
Stemodia macrantha Robinson Isotype
Stemodia macrantha Robinson Isotype
Stevia alatipes Robinson Isotype
Stevia aschenborniana var. occidentalis Grashoff Isotype
Stevia clinopodioides Greenman Isotype
Stevia collodes Greenman Isotype
Stevia cruzii Grashoff Isotype
Stevia deltoidea Greene Isotype
Stevia diffusa Greenman Isotype
Stevia elatior var. decumbens Robinson & Greenman Isotype
Stevia ephemera Grashoff Isotype
Stevia hypomalaca Robinson Isotype
Stevia incognita Grashoff Isotype
Stevia lita Grashoff Isotype
Stevia lita Grashoff Holotype
Stevia lozanoi Robinson Isotype
Stevia monardaefolia var. macrophylla Robinson Isosyntype
Stevia orizabensis Robinson Isotype
Stevia plummerae var. durangensis Robinson Isotype
Stevia polycephala var. oaxacensis Grashoff Isotype
Stevia purpusii Robinson Isotype
Stevia salicifolia var. ananthera Robinson Isotype
Stevia seemannioides Grashoff Isotype
Stevia simulans Robinson Isotype
Stevia tephra Robinson Isotype
Stevia zephyrantha Grashoff Isotype
Stipa arida Jones Isotype
Stipa comata ssp. intonsa Piper Isotype
Stipa humilis var. jonesiana Kuntze Isotype
Stipa lemmonii var. jonesii Scribner Isotype
Stipa mexicana Hitchcock Isotype
Stipa multinodis Scribner Isotype
Stipa porteri Rydberg Isotype
Stipa scribneri Vasey Isotype
Stipulicida filiformis Nash Isotype
Stipulicida setacea var. lacerata C. James Isotype
Straussia psychotrioides A. A. Heller Isotype
Straussia pubiflora A. A. Heller Isotype
Straussia sessilis Degener & Hosaka Isotype
Streblosa platyphylla Merr. Isotype
Streptotrachelus pringlei Greenman Isotype
Stromanthe angustifolia Rusby Isotype
Struthanthus alni
Styrax ramirezii Greenman Isotype
Symplocos pringlei Robinson Isotype
Synthlipsis lepidota Rose Isotype