Caulis erectus, valde elongatus, a basi subramosus, pilosissimus, superne subramosus, glaber, cr. 50-75 cm longus. Folia alterna, sessilia, caulem basi laxe investientia, caulis superiore parte nulla, late ovata, acuta usque ovalia, margine subincrassata, profunde serrata, dentibus exiguis ornata, subpilosa, undulata, cr. 25-27 mm longa, 6-10 mm lata. Flores longe pedicellati, pedicellis 40-50 mm longis; ovarium 3-loculare, obovatum, scutum, glabrum vel subpilosum, fere 2 mm longum, 4 mm crassum; calycis laciniae breviter lanceolatae, basi subdilatatae, apice acutae, margine subincrassatae, basi dentibus singulis exiguis ornatae, ovario aequilongae, subpilosae, apice subinvolutae, cr. 2 mm longae, 0.75 mm latae; corolla campanulata, ad calycis lacinias laciniata, laciniis late lanceolatis, apice subacuminatis, cr. duplo longioribus quam latioribus, cr. 8 mm longa, laciniis 5-6 mm longis; filamenti basis triangulariter dilatata, ab utroque latere subsinuata, item lata ac alta; antherae elongatae, angustae, apice subobtusae; stilus erectus, gracilis, apice haud incrassatus, vel raro subincrassatus, corollae fere 3/4 longitudine adaequans; stigmatis lobi 3, tenues, angusti, apice subobtusi, fere 5-plo longiores quam latiores, basi glandulis tribus evolutis, subin voluti. Capsula 3-locuIaris, elongata, obovata, usque ovalia, subcuneata, glabra, cr. 6 mm longa, cr. 3 mm crassa, parte superiore late conica, apice rotunde deplanata, calycis laciniis ca. dimidium longitudine adaequanta.
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Roughly hairy annual to 50 cm. Leaves ovate to elliptic, crenulate-toothed. Flower few on elongate peduncles, cup-shaped, white or blue, 12-18 mm diam., ovary glabrous, style with 3 (sometimes 6) glands below stigmas.