Are Ixiolirion and Aster both flowering plants?
yes
Aster (genus)
Aster is a genus of flowering plants in the family Asteraceae.
 Its circumscription has been narrowed, and it now encompasses around 180 species, all but one of which are restricted to Eurasia; many species formerly in "Aster" are now in other genera of the tribe Astereae.
Ixiolirion
Ixiolirion is a genus of flowering plants native to central and southwest Asia, first described as a genus in 1821.
 Recent classifications place the group in the monogeneric family Ixioliriaceae in the order Asparagales of the monocots.
 In earlier systems of classification, it was usually placed in the family Amaryllidaceae.
Callistephus
Callistephus is a monotypic genus of flowering plants in the aster family, Asteraceae, containing the single species Callistephus chinensis.
 Its common names include China aster and annual aster.
 It is native to China and Korea.
 and it is cultivated worldwide as an ornamental plant. Herrickia glauca
Herrickia glauca is a North American species of flowering plants in the aster family, called the gray aster.
 It is native to the western United States, primarily in Arizona, New Mexico, Utah, Colorado, and Wyoming, with a few populations in Idaho and Montana. Aster tataricus
Aster tataricus, also called Tatarinow's aster, is a member of the Aster genus of flowering plants. Herrickia wasatchensis
Herrickia wasatchensis is a North American species of flowering plants in the aster family, called the Wasatch aster.
 It has been found only in the states of Utah and Arizona in the western United States. Aster, Edmonton
Aster is a future neighbourhood in southeast Edmonton, Alberta, Canada.
 It was named for the "Aster" genus of flowering plants of which heath aster and flat-topped white aster are most common in Alberta. Chloracantha
Chloracantha is a monotypic genus of flowering plants in the aster family, containing the single species Chloracantha spinosa.
 It is distributed in the southwestern and south-central United States (CA NV AZ UT NM TX OK LA), most of Mexico, and much of Central America.
 Its English language common names include spiny chloracantha, spiny aster, devilweed aster, and Mexican devilweed.
 In Spanish it is known as espina de agua, espinaza, and espinosilla. Doellingeria
Doellingeria is a genus of flowering plants in the aster family.
 It contains species formerly included in "Aster" but now considered to be a distinct genus.
 They are known commonly as tall flat-topped asters or whitetops. Herrickia kingii
Herrickia kingii is a North American species of flowering plants in the aster family, called the King's serpentweed or King's aster.
 It has been found only in the State of Utah in the western United States.