Herba gracilis, erecta, subsimplex vel parum ramosa, 30-60 cm. alta, caule nunc benefoliato, nunc foliis paucis donato, stricto vel plus minus flexuoso; foliis anguste linearibus patentibus patulisve acutis, rarius oblanceolato-ellipticis acutis, integris vel obscure denticulatis, 1. 2-4. 5 cm. longis; floribus pallide caeruleis nunc racemosis nunc paniculatis, breviter pedicellatis; ovario pro genere minus elongato subclavatoglaberrimo, calycis dentibus subtriangulis acutis glabris, corollae 4-6-plo brevioribus; corolla alte 5-fida, 0. 8-1. 3 cm. mentis lineari-lanceolatis vel lineari-ellipticis acutis, glabris, 2-3 cm. latis; stylo subvilloso subulato, stigmatibus 2, erectis linearibus; filamentis e basi cuneata trilobulata hispidula, angustissime lineari-filiformibus glabris, 0-3 cm. longis, antheris linearibus obtusis, 0-4 cm. longis, stigmata paulo excedentibus; capsula subclavato-cylindrica glaberrima bivalvi.
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