| Common Name | Scientific Name | Code |
| acidswamp yelloweyed grass | Xyris serotina Chapman | XYSE |
| Baldwin's yelloweyed grass | Xyris baldwiniana J.A. Schultes | XYBA |
| bog yelloweyed grass | Xyris difformis Chapman | XYDI |
| bog yelloweyed grass | Xyris difformis Chapman var. difformis | XYDID |
| Carolina yelloweyed grass | Xyris caroliniana Walt. | XYCA |
| coastal plain yelloweyed grass | Xyris ambigua Bey. ex Kunth | XYAM |
| Curtiss's yelloweyed grass | Xyris difformis Chapman var. curtissii (Malme) Kral | XYDIC |
| Drummond's yelloweyed grass | Xyris drummondii Malme | XYDR |
| Elliott's yelloweyed grass | Xyris elliottii Chapman | XYEL2 |
| Florida yelloweyed grass | Xyris difformis Chapman var. floridana Kral | XYDIF |
| fringed yelloweyed grass | Xyris fimbriata Ell. | XYFI |
| Harper's yelloweyed grass | Xyris scabrifolia Harper | XYSC |
| Hawai'i yelloweyed grass | Xyris complanata R. Br. | XYCO |
| irisleaf yelloweyed grass | Xyris laxifolia Mart. var. iridifolia (Chapman) Kral | XYLAI |
| Kral's yelloweyed grass | Xyris longisepala Kral | XYLO |
| laxleaf yelloweyed grass | Xyris laxifolia Mart. | XYLA |
| Louisiana yelloweyed grass | Xyris louisianica Bridges & Orzell | XYLO2 |
| northern yelloweyed grass | Xyris montana Ries | XYMO |
| pineland yelloweyed grass | Xyris stricta Chapman | XYST |
| quillwort yelloweyed grass | Xyris isoetifolia Kral | XYIS |
| Richard's yelloweyed grass | Xyris jupicai L.C. Rich. | XYJU |
| savannah yelloweyed grass | Xyris flabelliformis Chapman | XYFL2 |
| shortleaf yelloweyed grass | Xyris brevifolia Michx. | XYBR |
| slender yelloweyed grass | Xyris torta Sm. | XYTO |
| Small's yelloweyed grass | Xyris smalliana Nash | XYSM |
| tall yelloweyed grass | Xyris platylepis Chapman | XYPL |
| Tennessee yelloweyed grass | Xyris tennesseensis Kral | XYTE |
| Xyris baldwiniana | Xyris baldwiniana J.A. Schultes var. tenuifolia (Chapman) Malme | XYBAT |
| Xyris baldwiniana | Xyris juncea Baldw. | XYJU2 |
| Xyris caroliniana | Xyris arenicola Small | XYAR2 |
| Xyris caroliniana | Xyris flexuosa Muhl. ex Ell. | XYFL5 |
| Xyris caroliniana | Xyris pallescens (C. Mohr) Small | XYPA5 |
| Xyris difformis var. curtissii | Xyris bayardii Fern. | XYBA2 |
| Xyris difformis var. curtissii | Xyris curtissii Malme | XYCU2 |
| Xyris difformis var. curtissii | Xyris neglecta Small | XYNE |
| Xyris difformis var. curtissii | Xyris papillosa Fassett | XYPA6 |
| Xyris jupicai | Xyris arenicola Miq. | XYAR3 |
| Xyris jupicai | Xyris communis Kunth | XYCO5 |
| Xyris jupicai | Xyris elata Chapman | XYEL3 |
| Xyris laxifolia var. iridifolia | Xyris iridifolia Chapman | XYIR |
| Xyris louisianica | Xyris stricta Chapman var. obscura Kral | XYSTO |
| Xyris scabrifolia | Xyris chapmanii Bridges & Orzell | XYCH |
| Xyris smalliana | Xyris caroliniana Walt. var. olneyi Wood | XYCAO |
| Xyris smalliana | Xyris congdonii Small | XYCO6 |
| Xyris smalliana | Xyris smalliana Nash var. olneyi (Wood) Gleason | XYSMO |
| Xyris torta | Xyris bulbosa Kunth | XYBU3 |
| Xyris torta | Xyris flexuosa Chapman | XYFL4 |
| Xyris torta | Xyris indica L. | XYIN2 |
| Xyris torta | Xyris torta Sm. var. macropoda Fern. | XYTOM |
| Xyris torta | Xyris torta Sm. var. occidentalis Malme | XYTOO |
| yelloweyed grass | Xyris L. | XYRIS |