| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| SCRU8 | Scleria rugosa R.Br. | nutrush | Cyperaceae
|
| SCSC6 | Scleria scabriuscula Schlecht. | mosquito nutrush | Cyperaceae
|
| SCSC2 | Scleria scindens Nees ex Kunth | hairy nutrush | Cyperaceae
|
| SCSC11 | Scleria scrobiculata Nees & Meyen | nutrush | Cyperaceae
|
| SCSE4 | Scleria secans (L.) Urban | razor grass | Cyperaceae
|
| SCSE2 | Scleria setacea auct. non Poir. | Scleria muehlenbergii | Cyperaceae
|
| SCST5 | Scleria stevensiana Britt. | Scleria muehlenbergii | Cyperaceae
|
| SCSU9 | Scleria sumatrensis Retz. | nutrush | Cyperaceae
|
| SCTE8 | Scleria tenella Kunth | Scleria verticillata | Cyperaceae
|
| SCTE6 | Scleria testacea Nees | Hawai'i nutrush | Cyperaceae
|
| SCTR | Scleria triglomerata Michx. | whip nutrush | Cyperaceae
|
| SCVE2 | Scleria verticillata Muhl. ex Willd. | low nutrush | Cyperaceae
|
| SCLER2 | Scleria Berg. | nutrush | Cyperaceae
|
| SCBL | Sclerocactus blainei Welsh & Thorne | Blaine fishhook cactus | Cactaceae
|
| SCBRT | Sclerocactus brevihamatus (Engelm.) D.R. Hunt ssp. tobuschii (W.T. Marsh.) N.P. Taylor | shorthook fishhook cactus | Cactaceae
|
| SCBR11 | Sclerocactus brevihamatus (Engelm.) D.R. Hunt | shorthook fishhook cactus | Cactaceae
|
| SCBR12 | Sclerocactus brevispinus Heil & Martin | shortspine fishhook cactus | Cactaceae
|
| SCCLB | Sclerocactus cloverae K.D. Heil & J.M. Porter ssp. brackii K.D.Heil & J.M.Porter | Brack's cactus | Cactaceae
|
| SCCL5 | Sclerocactus cloveriae Heil & Porter | Clover's fishhook cactus | Cactaceae
|
| SCCO8 | Sclerocactus contortus Heil | Canyonlands fishhook cactus | Cactaceae
|
| SCER2 | Sclerocactus erectocentrus (Coult.) N.P. Taylor | redspine fishhook cactus | Cactaceae
|
| SCGL3 | Sclerocactus glaucus (J.A. Purpus ex K. Schum.) L. Benson | Uinta Basin hookless cactus | Cactaceae
|
| SCIN5 | Sclerocactus intermedius Peebles | Sclerocactus parviflorus ssp. intermedius | Cactaceae
|
| SCIND | Sclerocactus intertextus (Engelm.) N.P. Taylor var. dasyacanthus (Engelm.) N.P. Taylor | white fishhook cactus | Cactaceae
|
| SCINI | Sclerocactus intertextus (Engelm.) N.P. Taylor var. intertextus | white fishhook cactus | Cactaceae
|
| SCIN4 | Sclerocactus intertextus (Engelm.) N.P. Taylor | white fishhook cactus | Cactaceae
|
| SCJO | Sclerocactus johnsonii (Parry ex Engelm.) N.P. Taylor | Johnson's fishhook cactus | Cactaceae
|
| SCMA6 | Sclerocactus mariposensis (Hester) N.P. Taylor | Lloyd's fishhook cactus | Cactaceae
|
| SCME4 | Sclerocactus mesae-verdae (Boissevain ex Boissevain & C. Davids.) L. Benson | Mesa Verde fishhook cactus | Cactaceae
|
| SCNY | Sclerocactus nyensis F. Hochstatter | Nye County fishhook cactus | Cactaceae
|
| SCPA10 | Sclerocactus papyracanthus (Engelm.) N.P. Taylor | paperspine fishhook cactus | Cactaceae
|
| SCPAI2 | Sclerocactus parviflorus Clover & Jotter ssp. intermedius (Peebles) Heil & Porter | intermediate fishhook cactus | Cactaceae
|
| SCPAP | Sclerocactus parviflorus Clover & Jotter ssp. parviflorus | smallflower fishhook cactus | Cactaceae
|
| SCPAB | Sclerocactus parviflorus Clover & Jotter var. ?blessingiae W.H. Earle | Sclerocactus whipplei | Cactaceae
|
| SCPAI | Sclerocactus parviflorus Clover & Jotter var. intermedius (Peebles) Woodruff & L. Benson | Sclerocactus parviflorus ssp. intermedius | Cactaceae
|
| SCPA9 | Sclerocactus parviflorus Clover & Jotter | smallflower fishhook cactus | Cactaceae
|
| SCPO4 | Sclerocactus polyancistrus (Engelm. & Bigelow) Britt. & Rose | redspined fishhook cactus | Cactaceae
|
| SCPUS | Sclerocactus pubispinus (Engelm.) L. Benson var. sileri L. Benson | Sclerocactus spinosior | Cactaceae
|
| SCPUS2 | Sclerocactus pubispinus (Engelm.) L. Benson var. spinosior (Engelm.) Welsh | Sclerocactus spinosior | Cactaceae
|
| SCPU6 | Sclerocactus pubispinus (Engelm.) L. Benson | Great Basin fishhook cactus | Cactaceae
|
| SCSC4 | Sclerocactus scheeri (Salm-Dyck) N.P. Taylor | Scheer's fishhook cactus | Cactaceae
|
| SCSC5 | Sclerocactus schlesseri Heil & Welsh | Schlesser's fishhook cactus | Cactaceae
|
| SCSI3 | Sclerocactus sileri (L. Benson) Heil & J.M. Porter | Sclerocactus spinosior | Cactaceae
|
| SCSP2 | Sclerocactus spinosior (Engelm.) Woodruff & L. Benson | desert valley fishhook cactus | Cactaceae
|
| SCTE7 | Sclerocactus terrae-canyonae Heil | longspine fishhook cactus | Cactaceae
|
| SCUNW | Sclerocactus uncinatus (Galeotti) N.P. Taylor var. wrightii (Engelm.) N.P. Taylor | Chihuahuan fishhook cactus | Cactaceae
|
| SCUN4 | Sclerocactus uncinatus (Galeotti) N.P. Taylor | Chihuahuan fishhook cactus | Cactaceae
|
| SCWA | Sclerocactus warnockii (L. Benson) N.P. Taylor | Warnock's fishhook cactus | Cactaceae
|
| SCWHG | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. glaucus (J.A. Purpus ex K. Schum.) Welsh | Sclerocactus glaucus | Cactaceae
|
| SCWHH | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. heilii Castetter, Pierce & Schwerin | Sclerocactus cloveriae | Cactaceae
|
| SCWHI | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. intermedius (Peebles) L. Benson | Sclerocactus parviflorus ssp. intermedius | Cactaceae
|
| SCWHR | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. ?reevsii Castetter, Pierce & Schwerin | Sclerocactus cloveriae | Cactaceae
|
| SCWHR2 | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. roseus (Clover) L. Benson | Sclerocactus whipplei | Cactaceae
|
| SCWHS | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose var. spinosior (Engelm.) Boissevain | Sclerocactus spinosior | Cactaceae
|
| SCWH | Sclerocactus whipplei (Engelm. & Bigelow) Britt. & Rose | Whipple's fishhook cactus | Cactaceae
|
| SCWR | Sclerocactus wrightiae L. Benson | Wright's fishhook cactus | Cactaceae
|
| SCLER10 | Sclerocactus Britt. & Rose | fishhook cactus | Cactaceae
|
| SCAF | Sclerocarpus africanus Jacq. | African bonebract | Asteraceae
|
| SCUNA | Sclerocarpus uniserialis (Benth.) Hemsl. var. austrotexanus B.L. Turner | Mexican bonebract | Asteraceae
|
| SCUNU | Sclerocarpus uniserialis (Benth.) Hemsl. var. uniserialis | Mexican bonebract | Asteraceae
|
| SCUN2 | Sclerocarpus uniserialis (Benth.) Hemsl. | Mexican bonebract | Asteraceae
|
| SCLER3 | Sclerocarpus Jacq. | bonebract | Asteraceae
|
| SCCA16 | Sclerocarya caffra Sonder | sclerocarya | Anacardiaceae
|
| SCLER14 | Sclerocarya Hochst. | sclerocarya | Anacardiaceae
|
| SCDU2 | Sclerochloa dura (L.) Beauv. | common hardgrass | Poaceae
|
| SCLER4 | Sclerochloa Beauv. | hardgrass | Poaceae
|
| SCUN3 | Sclerolepis uniflora (Walt.) B.S.P. | pink bogbutton | Asteraceae
|
| SCLER5 | Sclerolepis Cass. | bogbutton | Asteraceae
|
| SCDI5 | Sclerolinon digynum (Gray) Rogers | digynum flax | Linaceae
|
| SCLER9 | Sclerolinon Rogers | sclerolinon | Linaceae
|
| SCAM10 | Sclerophora amabilis (Tibell) Tibell | | Coniocybaceae
|
| SCCO22 | Sclerophora coniophaea (Norman) J. Mattsson & Middelb. | | Coniocybaceae
|
| SCFA2 | Sclerophora farinacea (Chevall.) Chevall. | | Coniocybaceae
|
| SCNI4 | Sclerophora nivea (Hoffm.) Tibell | | Coniocybaceae
|
| SCPE10 | Sclerophora peronella (Ach.) Tibell | | Coniocybaceae
|
| SCLER12 | Sclerophora Chevall. | sclerophora | Coniocybaceae
|
| SCCA14 | Sclerophyton californicum (Tuck.) Hasse | | Opegraphaceae
|
| SCIN8 | Sclerophyton inscriptum (Nyl.) Mull. Arg. | | Opegraphaceae
|
| SCOC8 | Sclerophyton occidentale Herre | | Opegraphaceae
|
| SCLER13 | Sclerophyton Eschw. | sclerophyton | Opegraphaceae
|
| SCRI3 | Scleropoa rigida (L.) Griseb. | Desmazeria rigida | Poaceae
|
| SCAPO | Scleropodium apocladum (Mitt.) Grout var. obtusum Grout | Scleropodium cespitans var. sublaeve | Brachytheciaceae
|
| SCAP2 | Scleropodium apocladum (Mitt.) Grout | Scleropodium cespitans var. sublaeve | Brachytheciaceae
|
| SCCAS | Scleropodium caespitosum Schimp. in B.S.G. var. sublaeve Ren. & Card. in R�ll | Scleropodium cespitans var. sublaeve | Brachytheciaceae
|
| SCCA19 | Scleropodium caespitosum Schimp. in B.S.G. | Scleropodium cespitans var. cespitans | Brachytheciaceae
|
| SCCA17 | Scleropodium californica (Lesq.) Kindb. | California scleropodium moss | Brachytheciaceae
|
| SCCEC5 | Scleropodium cespitans (C. M�ll.) L. Koch var. cespitans | low scleropodium moss | Brachytheciaceae
|
| SCCEL | Scleropodium cespitans (C. M�ll.) L. Koch var. laeve Ren. & Card. in R�ll | Scleropodium cespitans var. sublaeve | Brachytheciaceae
|
| SCCES | Scleropodium cespitans (C. M�ll.) L. Koch var. sublaeve (Ren. & Card. in R�ll) Wijk & Marg. | low scleropodium moss | Brachytheciaceae
|
| SCCE5 | Scleropodium cespitans (C. M�ll.) L. Koch | low scleropodium moss | Brachytheciaceae
|
| SCCOA | Scleropodium colpophyllum (Sull.) Grout var. attenuatum Grout | Scleropodium touretii var. colpophyllum | Brachytheciaceae
|
| SCCO9 | Scleropodium colpophyllum (Sull.) Grout | Scleropodium touretii var. colpophyllum | Brachytheciaceae
|
| SCIL | Scleropodium illecebrum Schimp. in B.S.G. | Scleropodium touretii var. touretii | Brachytheciaceae
|
| SCJU3 | Scleropodium julaceum Lawt. | scleropodium moss | Brachytheciaceae
|
| SCOB5 | Scleropodium obtusifolium (Jaeg.) Kindb. in Mac. & Kindb. | obtuseleaf scleropodium moss | Brachytheciaceae
|
| SCTOC | Scleropodium touretii (Brid.) L. Koch var. colpophyllum (Sull.) Lawt. ex Crum | Touret's scleropodium moss | Brachytheciaceae
|
| SCTOT | Scleropodium touretii (Brid.) L. Koch var. touretii | Touret's scleropodium moss | Brachytheciaceae
|
| SCTO2 | Scleropodium touretii (Brid.) L. Koch | Touret's scleropodium moss | Brachytheciaceae
|
| SCLER11 | Scleropodium Schimp. in B.S.G. | scleropodium moss | Brachytheciaceae
|
| SCBR2 | Scleropogon brevifolius Phil. | burrograss | Poaceae
|
| SCLO3 | Scleropogon longisetus Beetle | Scleropogon brevifolius | Poaceae
|