Summary description from Wikipedia:

Viola adunca in languages:

Chinese

鈎唇堇菜(美西犬堇菜)

English

hookedspur violet

English

Early Blue Violet

English

Sand Violet

French

violette à éperon crochu

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Parent Taxon

• Viola

Sibling Taxa

• Viola abulensis
• Viola accrescens
• Viola acuminata
• Viola adunca
• Viola aduncoides
• Viola anagae
• Viola appalachiensis
• Viola canina
• Viola caspia
• Viola dirphya
• Viola elatior
• Viola faurieana
• Viola fedtschenkoana
• Viola grayi
• Viola grypoceras
• Viola henryi
• Viola huidobrii
• Viola jordanii
• Viola kosanensis
• Viola kusanoana
• Viola labradorica
• Viola lactea
• Viola laricicola
• Viola mauritii
• Viola mirabilis
• Viola nemoralis
• Viola obtusa
• Viola ovato-oblonga
• Viola papuana
• Viola pendulicarpa
• Viola pumila
• Viola reichenbachiana
• Viola riviniana
• Viola rostrata
• Viola rupestris
• Viola sacchalinensis
• Viola sequeirae
• Viola shinchikuensis
• Viola sieheana
• Viola stagnina
• Viola stewardiana
• Viola striata
• Viola tanaitica
• Viola thibaudieri
• Viola uliginosa
• Viola umbraticola
• Viola utchinensis
• Viola vadimii
• Viola walteri
• Viola websteri
• Viola willkommii
• Viola × bavarica
• Viola × brauniae
• Viola × braunii
• Viola × burnatii
• Viola × eclipes
• Viola × intersita
• Viola × malteana
• Viola × obtusogrypoceras
• Viola × raunsiensis
• Viola × ritschliana
• Viola × villaquensis
• Viola × wujekii

Child Taxa

• Viola adunca adunca
• Viola adunca bellidifolia

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