Calyx. Perianthium pentaphyllum, lanceolatum, erectum, persistens.
Corolla. Petala infundibuliformia quinque, oblonga, superne sensim latiora, obtusa, patentia.
Stamina. Filamenta quinque subulata, erecta, longitudine calycis (rudimenta filorum insuper 5, alternantia). Antheræ simplices, sagittatæ.
Pistillum. Germen ovatum. Styli 5, filiformes, erecti, longitudine staminum. Stigmata simplicia, reflexa.
Pericarpium. Capsula globosa, pentagona, decemlocularis, quinquevalvis.
Semina solitaria, ovato-planiuscula, acuminata, glabra.
Empalement. Cup five-leaved, lance-shaped, upright, and remaining.
Blossom. Funnel-shaped petals five, oblong, widening upwards by degrees, obtuse, and spreading.
Chives. Five filaments, awl-shaped, upright, the length of the calyx (there are five alternate slight rudiments of threads). Anthers simple, and arrow-shaped.
Pointal. Seed-bud ovate. Shafts 5, thread-shaped, and upright, the length of the stamens. Summits simple, and reflexed.