Dasistoma

Rafinesque

J. Phys. Chim. Hist. Nat. Arts 89: 99. 1819. 1819

Common names: Mullein-foxglove
Endemic
Etymology: Greek dasys, hairy, and stoma, mouth, alluding to lanate throat of corolla
Treatment appears in FNA Volume 17. Treatment on page 560. Mentioned on page 458, 559, 562.

Herbs, annual or biennial, possibly sometimes perennial; hemiparasitic. Stems erect, not fleshy, puberulent, retrorsely puberulent, or pubescent. Leaves loosely basal and cauline, opposite; petiole present; blade not fleshy, not leathery, margins pinnatifid to 2-pinnatifid proximally, sometimes entire distally. Inflorescences terminal or terminal and axillary, spikelike racemes; bracts present. Pedicels present; bracteoles absent. Flowers: sepals 5, calyx weakly bilaterally symmetric, campanulate, lobes ovate to oblong-ovate; petals 5, corolla yellow, bilabiate, campanulate, abaxial lobes 3, adaxial 2; stamens 4, didynamous, filaments lanate, anthers glabrous; staminode 0; ovary 2-locular, placentation axile; stigma capitate or 2-lobed. Capsules: dehiscence loculicidal. Seeds 50–100, tan or brown, angled, wings absent.

Distribution

e, nc United States.

Discussion

Species 1.