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- Myrsinaceae Illustrations (1 revision)
- Viola novae-angliae (1 revision)
- Salix sect. Myrtilloides (1 revision)
- Castilleja exserta var. venusta (1 revision)
- Abronia umbellata (1 revision)
- Centaurea solstitialis (1 revision)
- Chrysopsis gossypina subsp. cruiseana (1 revision)
- Rhexia lutea (1 revision)
- Physaria vicina (1 revision)
- Onagraceae tribe Epilobieae (1 revision)
- Sideroxylon celastrinum (1 revision)
- Croton lindheimerianus (1 revision)
- Aloina (1 revision)
- Crataegus pruinosa var. magnifolia (1 revision)
- Drummondia (1 revision)
- Brickellia chenopodina (1 revision)
- Dudleya subg. Hasseanthus (1 revision)
- Muhlenbergia elongata (1 revision)
- Silene occidentalis (1 revision)
- Castanea dentata (1 revision)
- Penstemon sect. Saccanthera (1 revision)
- Kelseya uniflora (1 revision)
- Heuchera sanguinea (1 revision)
- Cyperus onerosus (1 revision)
- Potentilla townsendii (1 revision)
- Sagittaria (1 revision)
- Sorbus sitchensis var. sitchensis (1 revision)
- Coeloglossum (1 revision)
- Sedum stenopetalum var. monanthum (1 revision)
- Hypericum sphaerocarpum (1 revision)
- Schistidium boreale (1 revision)
- Anemone quinquefolia var. minima (1 revision)
- Glaucium flavum (1 revision)
- Adiantum jordanii (1 revision)
- Eriogonum gracile var. incultum (1 revision)
- Festuca paradoxa (1 revision)
- Crataegus exilis (1 revision)
- Geum canadense (1 revision)
- Pentachaeta aurea (1 revision)
- Eriophyllum wallacei (1 revision)
- Xyris montana (1 revision)
- Ranunculus sceleratus (1 revision)
- Chorizanthe xanti (1 revision)
- Euphorbia geyeri (1 revision)
- Epilobium canum (1 revision)
- Abildgaardia (1 revision)
- Packera macounii (1 revision)
- Carex edwardsiana (1 revision)
- Huperzia (1 revision)
- Combretum indicum (1 revision)
- Echinomastus erectocentrus var. acunensis (1 revision)
- Croton pottsii var. thermophilus (1 revision)
- Eleocharis mamillata (1 revision)
- Zostera japonica (1 revision)
- Chorisiva nevadensis (1 revision)
- Pulicaria paludosa (1 revision)
- Bryum calobryoides (1 revision)
- Penstemon crandallii var. crandallii (1 revision)
- Adenophyllum wrightii (1 revision)
- Lewisia cantelovii (1 revision)
- Rubus spectabilis (1 revision)
- Draba arctogena (1 revision)
- Delphinium hesperium subsp. hesperium (1 revision)
- Hieracium alpinum (1 revision)
- Philonotis longiseta (1 revision)
- Aureolaria (1 revision)
- Eriogonum clavellatum (1 revision)
- Cardamine concatenata (1 revision)
- Saxifraga adscendens (1 revision)
- Campylopus tallulensis (1 revision)
- Carex merritt-fernaldii (1 revision)
- Prunus serotina (1 revision)
- Lenophyllum texanum (1 revision)
- Crataegus padifolia var. incarnata (1 revision)
- Lithophragma heterophyllum (1 revision)
- Rumex pallidus (1 revision)
- Brothera leana (1 revision)
- Botrychium echo (1 revision)
- Oeceoclades (1 revision)
- Cakile lanceolata subsp. pseudoconstricta (1 revision)
- Selenia jonesii (1 revision)
- Perityle gracilis (1 revision)
- Eriogonum douglasii (1 revision)
- Racopilum (1 revision)
- Crataegus viridis var. viridis (1 revision)
- Betula pubescens subsp. pubescens (1 revision)
- Luzula piperi (1 revision)
- Chloris ventricosa (1 revision)
- Eriogonum alpinum (1 revision)
- Euphorbia ouachitana (1 revision)
- Pedicularis sudetica (1 revision)
- Eutrochium purpureum var. purpureum (1 revision)
- Heteropogon contortus (1 revision)
- Pseudognaphalium canescens (1 revision)
- Arecaceae (tribe Cocoeae) subtribe Butiinae (1 revision)
- Xanthisma texanum (1 revision)
- Rhododendron calendulaceum (1 revision)
- Turneraceae Illustrations (1 revision)
- Carex pauciflora (1 revision)
- Crepis runcinata subsp. imbricata (1 revision)
- Zigadenus fontanus (1 revision)
- Carex radiata (1 revision)
- Coreopsis gladiata (1 revision)
- Panicum hirticaule subsp. hirticaule (1 revision)
- Zygodon menziesii (1 revision)
- Verbesina microptera (1 revision)
- Diplacus traskiae (1 revision)
- Guardiola (1 revision)
- Sporobolus giganteus (1 revision)
- Hordeum vulgare (1 revision)
- Atriplex suckleyi (1 revision)
- Aconitum maximum subsp. maximum (1 revision)
- Tragia smallii (1 revision)
- Horkelia sect. Parryae (1 revision)
- Terminalia buceras (1 revision)
- Schlotheimia (1 revision)
- Penstemon californicus (1 revision)
- Eurybia (1 revision)
- Limnanthes floccosa (1 revision)
- Antennaria media (1 revision)
- Smelowskia porsildii (1 revision)
- Artemisia (1 revision)
- Erigeron glacialis var. glacialis (1 revision)
- Deinandra bacigalupii (1 revision)
- Sphaeralcea fendleri var. venusta (1 revision)
- Acalypha wilkesiana (1 revision)
- Asplenium ebenoides (1 revision)
- Dryopteris cinnamomea (1 revision)
- Abronia macrocarpa (1 revision)
- Quercus georgiana (1 revision)
- Argemone squarrosa subsp. squarrosa (1 revision)
- Sedum havardii (1 revision)
- Poaceae tribe Olyreae (1 revision)
- Iberis (1 revision)
- Scabrethia scabra (1 revision)
- Cirsium eatonii var. peckii (1 revision)
- Comandra umbellata subsp. umbellata (1 revision)
- Fissidens zollingeri (1 revision)
- Allium columbianum (1 revision)
- Spergularia salina (1 revision)
- Photinia (1 revision)
- Triphora yucatanensis (1 revision)
- Leymus condensatus (1 revision)
- Stenocereus thurberi (1 revision)
- Solidago rugosa (1 revision)
- Ericameria parryi var. affinis (1 revision)
- Dieteria bigelovii (1 revision)
- Senecio flaccidus var. flaccidus (1 revision)
- Sedum oreganum var. tenue (1 revision)
- Cimicifuga elata (1 revision)
- Euphorbia serpillifolia subsp. hirtula (1 revision)
- Notholaena neglecta (1 revision)
- Notholaena californica (1 revision)
- Ceanothus foliosus var. vineatus (1 revision)
- Scleranthus perennis (1 revision)
- Sisyrinchium radicatum (1 revision)
- Agalinis edwardsiana (1 revision)
- Vaccinium corymbosum (1 revision)
- Ivesia aperta var. aperta (1 revision)
- Cyperus prolifer (1 revision)
- Tortula lanceola (1 revision)
- Gemmabryum dichotomum (1 revision)
- Castilleja covilleana (1 revision)
- Potentilla subjuga (1 revision)
- Ribes oxyacanthoides (1 revision)
- Salsola collina (1 revision)
- Carex muehlenbergii (1 revision)
- Penstemon longiflorus (1 revision)
- Grimmiaceae subfam. Racomitrioideae (1 revision)
- Dudleya cymosa subsp. marcescens (1 revision)
- Physaria dornii (1 revision)
- Argemone munita subsp. robusta (1 revision)
- Linaria bipartita (1 revision)
- Vaccinium sect. Vaccinium (1 revision)
- Chrysophyllum oliviforme subsp. oliviforme (1 revision)
- Campylopus subulatus (1 revision)
- Claytonia parviflora subsp. grandiflora (1 revision)
- Polypodium hesperium (1 revision)
- Crataegus rubella (1 revision)
- Rhizogoniaceae (1 revision)
- Humulus lupulus var. lupuloides (1 revision)
- Botrychium pedunculosum (1 revision)
- Cyrtomnium hymenophyllum (1 revision)
- Rumex alpinus (1 revision)
- Sparganium americanum (1 revision)
- Kalmiopsis leachiana (1 revision)
- Jatropha cathartica (1 revision)
- Cirsium discolor (1 revision)
- Berlandiera monocephala (1 revision)
- Atriplex torreyi (1 revision)
- Setaria verticillata (1 revision)
- Passiflora foetida (1 revision)
- Allium bisceptrum (1 revision)
- Penstemon eatonii (1 revision)
- Equisetaceae Illustrations (1 revision)
- Castilleja angustifolia var. angustifolia (1 revision)
- Mimulus ringens (1 revision)
- Suaeda sect. Limbogermen (1 revision)
- Euphorbia strictior (1 revision)
- Dichanthelium commutatum subsp. equilaterale (1 revision)
- Pouteria campechiana (1 revision)
- Samolus vagans (1 revision)
- Corchorus siliquosus (1 revision)
- Hypnum fujiyamae (1 revision)
- Caulanthus heterophyllus (1 revision)
- Festuca rubra subsp. arenaria (1 revision)
- Agoseris parviflora (1 revision)
- Keckiella corymbosa (1 revision)
- Townsendia aprica (1 revision)
- Rumex orthoneurus (1 revision)
- Commelina caroliniana (1 revision)
- Solidago plumosa (1 revision)
- Eriogonum jamesii (1 revision)
- Cerastium (1 revision)
- Atrichum tenellum (1 revision)
- Cenchrus echinatus (1 revision)
- Oenothera villosa (1 revision)
- Populus grandidentata (1 revision)
- Sedum laxum var. eastwoodiae (1 revision)
- Plantago canescens (1 revision)
- Viola walteri var. walteri (1 revision)
- Allowissadula holosericea (1 revision)
- Schoenoplectus deltarum (1 revision)
- Carex flaccosperma (1 revision)
- Eriogonum prattenianum var. avium (1 revision)
- Pylaisiadelpha tenuirostris (1 revision)
- Napaea (1 revision)
- Belamcanda (1 revision)
- Juncus triglumis var. triglumis (1 revision)
- Stellaria pubera (1 revision)
- Draba argyrea (1 revision)
- Draba oblongata (1 revision)
- Keckiella lemmonii (1 revision)
- Pseudognaphalium arizonicum (1 revision)
- Oenothera clelandii (1 revision)
- Hypericum virgatum (1 revision)
- Diplacus bicolor (1 revision)
- Symphyotrichum turbinellum (1 revision)
- Aureolaria flava (1 revision)
- Quercus myrtifolia (1 revision)
- Viola lobata (1 revision)
- Myriophyllum ussuriense (1 revision)
- Eriogonum grande var. rubescens (1 revision)
- Encalypta vittiana (1 revision)
- Carex obtusata (1 revision)
- Solidago arguta subsp. caroliniana (1 revision)
- Crataegus cognata (1 revision)
- Limnanthes alba subsp. versicolor (1 revision)
- Brodiaea coronaria (1 revision)
- Erigeron pringlei (1 revision)
- Fabronia (1 revision)
- Dudleya attenuata (1 revision)
- Bidens bidentoides (1 revision)
- Geum rivale (1 revision)
- Bahia (1 revision)
- Papaver argemone (1 revision)
- Coreopsis sect. Tuckermannia (1 revision)
- Pseudosasa (1 revision)
- Chrysothamnus stylosus (1 revision)
- Ivesia argyrocoma var. argyrocoma (1 revision)
- Solidago arenicola (1 revision)
- Eriogonum racemosum (1 revision)
- Schizachyrium cirratum (1 revision)
- Mentzelia lindheimeri (1 revision)
- Eriogonum gracilipes (1 revision)
- Rhododendron groenlandicum (1 revision)
- Agnorhiza invenusta (1 revision)
- Physaria cinerea (1 revision)
- Sisyrinchium idahoense var. macounii (1 revision)
- Prunus mexicana (1 revision)
- Delphinium patens subsp. patens (1 revision)
- Nekemias (1 revision)
- Brassicaceae tribe Thlaspideae (1 revision)
- Crocanthemum scoparium var. vulgare (1 revision)
- Erythranthe erubescens (1 revision)
- Coptis trifolia (1 revision)
- Brachytheciastrum collinum (1 revision)
- Bacopa eisenii (1 revision)
- Alchemilla alpina (1 revision)
- Townsendia minima (1 revision)
- Tayloria serrata (1 revision)
- Franklinia (1 revision)
- Jarava ichu (1 revision)
- Rhodotypos (1 revision)
- Coryphantha minima (1 revision)
- Cleistes divaricata (1 revision)
- Phalaris angusta (1 revision)
- Diplacus puniceus (1 revision)
- Nemastylis tenuis (1 revision)
- Magnolia macrophylla (1 revision)
- Festuca prolifera (1 revision)
- Asplenium adulterinum (1 revision)
- Salviniaceae Illustrations (1 revision)
- Scleropogon brevifolius (1 revision)
- Leptodontium viticulosoides var. sulphureum (1 revision)
- Juncus acutus subsp. leopoldii (1 revision)
- Gaylussacia ursina (1 revision)
- Tidestromia suffruticosa var. oblongifolia (1 revision)
- Phemeranthus humilis (1 revision)
- Koanophyllon palmeri (1 revision)
- Rhynchospora macra (1 revision)
- Grindelia decumbens (1 revision)
- Mnium arizonicum (1 revision)
- Carex subspathacea (1 revision)
- Penstemon perpulcher (1 revision)
- Saururus cernuus (1 revision)
- Ceanothus cuneatus var. cuneatus (1 revision)
- Flaveria linearis (1 revision)
- Schismus (1 revision)
- Polystichum californicum (1 revision)
- Epigaea repens (1 revision)
- Polygonaceae subfam. Eriogonoideae (1 revision)
- Eremothera boothii subsp. decorticans (1 revision)
- Eriogonum pauciflorum (1 revision)
- Eriogonum brevicaule (1 revision)
- Saxifraga flagellaris subsp. setigera (1 revision)
- Limosella aquatica (1 revision)
- Pascalia glauca (1 revision)
- Salix wolfii var. idahoensis (1 revision)
- Eragrostis sessilispica (1 revision)
- Streptanthus cordatus (1 revision)
- Eriogonum sphaerocephalum var. sphaerocephalum (1 revision)
- Tradescantia crassula (1 revision)
- Claytonia arenicola (1 revision)
- Leontodon saxatilis subsp. longirostris (1 revision)
- Muhlenbergia fragilis (1 revision)
- Haloragis erecta subsp. erecta (1 revision)
- Delphinium subsect. Subscaposa (1 revision)
- Delphinium parryi subsp. purpureum (1 revision)
- Ionactis linariifolia (1 revision)
- Picrothamnus (1 revision)
- Urochloa ciliatissima (1 revision)
- Lilium occidentale (1 revision)
- Erigeron multiceps (1 revision)
- Mauranthemum (1 revision)
- Euphorbia missurica (1 revision)
- Pityopsis (1 revision)
- Verbesina walteri (1 revision)
- Rudbeckia alpicola (1 revision)
- Bruchia drummondii (1 revision)
- Ceanothus tomentosus var. olivaceus (1 revision)
- Juncus supiniformis (1 revision)
- Dicranum leioneuron (1 revision)
- Delphinium parishii subsp. subglobosum (1 revision)
- Distichium hagenii (1 revision)
- Silene involucrata subsp. tenella (1 revision)
- Carex petricosa var. petricosa (1 revision)
- Potentilla crebridens (1 revision)
- Scolochloa (1 revision)
- Quercus polymorpha (1 revision)
- Yucca glauca (1 revision)
- Crepis modocensis subsp. subacaulis (1 revision)
- Clematis addisonii (1 revision)
- Diplacus compactus (1 revision)
- Gossypium (1 revision)
- Eriogonum mortonianum (1 revision)
- Ayenia (1 revision)
- Arnica lanceolata (1 revision)
- Mabrya (1 revision)
- Castilleja grisea (1 revision)
- Epilobium coloratum (1 revision)
- Meiotrichum (1 revision)
- Ranunculus acriformis (1 revision)
- Allium sanbornii var. congdonii (1 revision)
- Tillandsia paucifolia (1 revision)
- Senecio integerrimus var. scribneri (1 revision)
- Anomobryum julaceum (1 revision)
- Rosa woodsii subsp. arizonica (1 revision)
- Erigeron formosissimus var. formosissimus (1 revision)
- Phemeranthus aurantiacus (1 revision)
- Parapholis (1 revision)
- Betula alleghaniensis (1 revision)
- Camassia quamash subsp. maxima (1 revision)
- Lactuca saligna (1 revision)
- Oxystylis lutea (1 revision)
- Carex buxbaumii (1 revision)
- Carex trisperma (1 revision)
- Bartramia ithyphylla (1 revision)
- Eriogonum watsonii (1 revision)
- Coryphantha sulcata (1 revision)
- Dichanthelium dichotomum subsp. yadkinense (1 revision)
- Platanus (1 revision)
- Garrya flavescens (1 revision)
- Penstemon watsonii (1 revision)
- Salix calcicola (1 revision)
- Calochortus palmeri (1 revision)
- Cymodoceaceae Illustrations (1 revision)
- Elymus elymoides subsp. hordeoides (1 revision)
- Eriophyllum confertiflorum var. confertiflorum (1 revision)
- Eriogonum umbellatum var. subaridum (1 revision)
- Saccharum brevibarbe (1 revision)
- Acaulon triquetrum (1 revision)
- Populus deltoides subsp. wislizeni (1 revision)
- Corchorus hirsutus (1 revision)
- Spartina ×townsendii (1 revision)
- Perityle bisetosa (1 revision)
- Carex seorsa (1 revision)
- Rumex britannica (1 revision)
- Zeuxine strateumatica (1 revision)
- Calochortus greenei (1 revision)
- Plantago rugelii (1 revision)
- Eremothera boothii subsp. alyssoides (1 revision)
- Beta (1 revision)
- Grusonia clavata (1 revision)
- Penstemon pratensis (1 revision)
- Cheilanthes (1 revision)
- Salicornia maritima (1 revision)
- Adiantum pedatum (1 revision)
- Ammannia (1 revision)
- Pellaea (1 revision)
- Populus fremontii subsp. mesetae (1 revision)
- Eupatorium anomalum (1 revision)
- Chenopodium berlandieri var. berlandieri (1 revision)
- Physaria lepidota (1 revision)
- Rosa spinosissima (1 revision)
- Eriogonum rotundifolium (1 revision)
- Helianthus praecox subsp. praecox (1 revision)
- Penstemon linarioides var. sileri (1 revision)
- Claytonia gypsophiloides (1 revision)
- Lithocarpus densiflorus var. densiflorus (1 revision)
- Ranunculus abortivus (1 revision)
- Castanea ozarkensis (1 revision)
- Prunus avium (1 revision)
- Xanthisma coloradoense (1 revision)
- Lechea sessiliflora (1 revision)
- Juniperus ashei (1 revision)
- Asplenium ×biscayneanum (1 revision)
- Sagina nivalis (1 revision)
- Listera ovata (1 revision)
- Digitalis grandiflora (1 revision)
- Lagerstroemia (1 revision)
- Cordylanthus kingii (1 revision)
- Penstemon thompsoniae (1 revision)
- Asteraceae (tribe Heliantheae) subtribe Coreopsidinae (1 revision)
- Pseudorontium cyathiferum (1 revision)
- Stellaria borealis subsp. sitchana (1 revision)
- Clematis pitcheri var. pitcheri (1 revision)
- Oenothera stricta (1 revision)
- Saccharum alopecuroides (1 revision)
- Hymenocallis henryae (1 revision)
- Ottelia alismoides (1 revision)
- Pyrrocoma lanceolata var. lanceolata (1 revision)
- Agalinis maritima var. maritima (1 revision)
- Buddleja racemosa var. racemosa (1 revision)
- Breynia (1 revision)
- Agave delamateri (1 revision)
- Cylindropuntia arbuscula (1 revision)
- Vaccinium sect. Batodendron (1 revision)
- Sida rubromarginata (1 revision)
- Bryophyllum pinnatum (1 revision)
- Woodsia ilvensis (1 revision)
- Campyliadelphus (1 revision)
- Sorbus scopulina (1 revision)
- Liatris gracilis (1 revision)
- Polyctenium (1 revision)
- Mammillaria viridiflora (1 revision)
- Bambusa (1 revision)
- Cissampelos (1 revision)
- Schizachyrium niveum (1 revision)
- Lechea intermedia var. depauperata (1 revision)
- Listera australis (1 revision)
- Grimmia montana (1 revision)
- Poteridium occidentale (1 revision)
- Alopecurus saccatus (1 revision)
- Argemone aurantiaca (1 revision)
- Erigeron inornatus var. keilii (1 revision)
- Nyssaceae (1 revision)
- Prenanthes altissima (1 revision)
- Ivesia jaegeri (1 revision)
- Allenrolfea occidentalis (1 revision)
- Phoebanthus grandiflorus (1 revision)
- Mimusops elengi (1 revision)
- Centaurea scabiosa (1 revision)
- Piptatherum exiguum (1 revision)
- Eriochloa sericea (1 revision)
- Cannaceae (1 revision)
- Malacomeles denticulata (1 revision)
- Gaillardia arizonica (1 revision)
- Tsuga mertensiana (1 revision)
- Cirsium joannae (1 revision)
- Tragopogon (1 revision)
- Thymophylla tephroleuca (1 revision)
- Lycopodiaceae Illustrations (1 revision)
- Carex lachenalii (1 revision)
- Hordeum murinum subsp. murinum (1 revision)
- Solidago rigida subsp. rigida (1 revision)
- Cindy Roché (1 revision)
- Schoepfia schreberi (1 revision)
- Cota (1 revision)
- Santolina chamaecyparissus (1 revision)
- Stephanomeria paniculata (1 revision)
- Asplenium dalhousiae (1 revision)
- Paspalum praecox (1 revision)
- Ranunculus hyperboreus (1 revision)
- Ivesia longibracteata (1 revision)
- Allium coryi (1 revision)
- Herniaria hirsuta var. cinerea (1 revision)
- Avenula hookeri (1 revision)
- Schistophragma (1 revision)
- Onoclea (1 revision)