Chi Nở ngày hay Chi Bách nhật (danh pháp khoa học: Gomphrena) là chi thực vật có hoa trong họ Amaranthaceae.

Các loài
 Gomphrena affinis F.Muell. ex Benth.
 G. affinis subsp. pilbarensis Kanis ex J.Palmer
 Gomphrena agrestis Mart.
 Gomphrena albiflora Moq.
 Gomphrena anti-lethargica Silveira
 Gomphrena arborescens L.f.
 Gomphrena arida J.Palmer
 Gomphrena atrorubra J.Palmer
 Gomphrena basilanata Suess.
 Gomphrena bicolor Mart.
 Gomphrena boliviana Moq.
 Gomphrena brachystylis F.Muell.
 Gomphrena breviflora F.Muell.
 Gomphrena caespitosa Torr.
 Gomphrena caleyi Briq.
 Gomphrena canescens R.Br.
 G. canescens subsp. erythrina J.Palmer
 Gomphrena cardenasii Standl. ex E.Holzh.
 Gomphrena celosioides Mart.
 G. celosioides var. fallax (Seub.) Pedersen
 G. celosioides var. hygrophila (Mart.) Pedersen
 G. celosioides f. roseiflora (Chodat) Pedersen
 Gomphrena centrota E.Holzh.
 Gomphrena chrestoides C.C.Towns.
 Gomphrena cinnabarina Suess.
 Gomphrena cladotrichoides Suess.
 Gomphrena claussenii Moq.
 Gomphrena colosacana Hunz. & Subils
 Gomphrena conferta Benth.
 Gomphrena conica (R.Br.) Spreng.
 Gomphrena connata J.Palmer
 Gomphrena cucullata J.Palmer
 Gomphrena debilis Mart.
 Gomphrena decipiens Seub.
 Gomphrena demissa Mart.
 Gomphrena desertorum Mart.
 G. desertorum var. mucronata (Moq.) Stuchlík
 G. desertorum var. rodantha (Moq.) Stuchlík
 Gomphrena diffusa (R.Br.) Spreng.
 Gomphrena discolor R.E.Fr.
 Gomphrena duriuscula Moq.
 Gomphrena eichleri J.Palmer
 Gomphrena elegans Mart.
 Gomphrena equisetiformis R.E.Fr.
 Gomphrena eriophylla Mart.
 Gomphrena ferruginea Pedersen
 Gomphrena filaginoides M.Martens & Galeotti
 Gomphrena flaccida R.Br.
 Gomphrena floribunda J.Palmer
 Gomphrena fuscipellita T.Ortuño & Borsch
 Gomphrena gardneri Moq.
 Gomphrena glabratoides (Suess.) J.C.Siqueira
 Gomphrena globosa L.
 Gomphrena graminea Moq.
 Gomphrena guaranitica Chodat
 Gomphrena haageana Klotzsch
 Gomphrena haenkeana Mart.
 Gomphrena hatschbachiana Pedersen
 Gomphrena hermogenesii J.C.Siqueira
 Gomphrena hilariana Moq.
 Gomphrena hillii Suess.
 Gomphrena humifusa J.Palmer
 Gomphrena humilis R.Br.
 Gomphrena incana Mart.
 Gomphrena insignis Briq.
 Gomphrena involucrata Ewart
 Gomphrena kanisii J.Palmer
 Gomphrena lacinulata J.Palmer
 Gomphrena lanata R.Br.
 Gomphrena lanigera Pohl ex Moq
 Gomphrena leontopodioides Domin
 Gomphrena leptoclada Benth.
 Gomphrena leptophylla (Benth.) J.Palmer
 Gomphrena leucocephala Mart.
 Gomphrena macrocephala A.St.-Hil.
 Gomphrena macrorhiza Mart.
 Gomphrena magentitepala J.Palmer
 Gomphrena mandonii R.E.Fr.
 Gomphrena marginata Seub.
 Gomphrena martiana Gillies ex Moq.
 G. martiana f. austrina Pedersen
 G. martiana var. glutinosa (R.E.Fr.) Pedersen
 Gomphrena matogrossensis Suess.
 Gomphrena mendocina (Phil.) R.E.Fr.
 G. mendocina subsp. australis Pedersen
 Gomphrena meyeniana Walp.
 G. meyeniana var. acaulis (Remy) Suess.
 G. meyeniana var. conwayi (Rusby) Suess.
 G. meyeniana var. tucumanensis Pedersen
 Gomphrena microcephala Moq.
 Gomphrena mizqueensis T.Ortuño & Borsch
 Gomphrena mollis Mart.
 Gomphrena moquinii Seub.
 Gomphrena nealleyi J.M.Coult. & Fisher
 Gomphrena nigricans Mart.
 Gomphrena nitida Rothr.
 Gomphrena obovata L.
 Gomphrena occulta J.Palmer
 Gomphrena oroyana Standl.
 Gomphrena pallida (Stuchlík) Pedersen
 Gomphrena paraguayensis Chodat
 G. paraguayensis subsp. chacoensis Pedersen
 Gomphrena paranensis R.E.Fr.
 Gomphrena parviceps Standl.
 Gomphrena parviflora Benth.
 Gomphrena perennis L.
 G. perennis var. silenoides (Chodat) Suess. ex Holzh.
 G. perennis var. subalpina (Herzog) Suess.
 G. perennis var. suffruticosa (Griseb.) R.E.Fr.
 Gomphrena phaeotricha Pedersen
 Gomphrena pilosa (M.Martens & Galeotti) Moq.
 Gomphrena platycephala R.E.Fr.
 Gomphrena pohlii Moq.
 G. pohlii var. hassleri (Chodat) Pedersen
 G. pohlii var. hispidula Seub.
 Gomphrena potosiana Suess. & Benl
 Gomphrena pringlei J.M.Coult. & Fisher
 Gomphrena procumbens Jacq.
 Gomphrena prostrata Mart.
 Gomphrena pulchella Mart.
 G. pulchella subsp. albisericea (E.Holzh.) Pedersen
 G. pulchella subsp. rosea (Griseb.) Pedersen
 Gomphrena pulvinata Suess.
 Gomphrena pumila Gillies ex Moq.
 Gomphrena pungens Seub.
 Gomphrena pusilla Benth.
 Gomphrena radiata Pedersen
 Gomphrena regeliana Seub.
 Gomphrena riedelii Seub.
 Gomphrena riparia Pedersen
 Gomphrena rosula J.Palmer
 Gomphrena rudis Moq.
 Gomphrena rupestris Nees
 Gomphrena scandens (R.E.Fr.) J.C.Siqueira
 Gomphrena scapigera Mart.
 Gomphrena schinziana Stuchlík
 Gomphrena schlechtendaliana Mart.
 Gomphrena sellowiana Mart.
 Gomphrena serrata L.
 Gomphrena serturneroides Suess.
 Gomphrena sonorae Torr.
 Gomphrena sordida Farmar
 Gomphrena spissa Pedersen
 Gomphrena stellata T.Ortuño & Borsch
 Gomphrena tenella (Moq.) Benth.
 Gomphrena tomentosa (Griseb.) R.E.Fr.
 Gomphrena triceps Pedersen
 Gomphrena trinervosa C.C.Towns.
 Gomphrena trollii Suess.
 Gomphrena umbellata Remy
 Gomphrena uruguayensis Suess.
 Gomphrena vaga Mart.
 Gomphrena virgata Mart.
 Gomphrena vitellina Pedersen

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