Physostegia virginiana (L.) Benth., Edwards’s Bot. Reg. 15: t. 1289 1829. (syn: Dracocephalum denticulatum Aiton .; Dracocephalum formosius (Lunell) Rydb.; Dracocephalum lancifolium Moench [Illegitimate]; Dracocephalum louisianum Lem.; Dracocephalum regelii Voss [Invalid]; Dracocephalum speciosum Sweet; Dracocephalum virginianum L. ….; Physostegia denticulata (Aiton) Britton; Physostegia formosior Lunell .; Physostegia granulosa Fassett; Physostegia imbricata Hook.; Physostegia latidens House; Physostegia nivea Lundell; Physostegia speciosa (Sweet) Sweet .; Physostegia virginiana f. alba (J.W.Moore) B.Boivin ……….; Prasium coccineum Walter);
Canada to NE. Mexico as per WCSP;
Physostegia virginiana (obedient plant, obedience, or false dragonhead) is a species of flowering plant in the mint family, Lamiaceae. It is native to North America, where it is distributed from eastern Canada to northern Mexico.
Physostegia are known commonly as obedient plants because a flower pushed to one side will often stay in that position. The name false dragonhead refers to the dragonheads of the related Dracocephalum, a genus to which the plant once belonged.
It is a rhizomatous perennial herb producing clumps of stiff, squared stems 2 to 4 feet tall. The leaves are lance-shaped and toothed. It has long, dense spikes of lipped, pinkish, “snapdragon-like” flowers in the summer.
There are two recognized subspecies. The ssp. praemorsa is more widespread farther south, to Texas and New Mexico, and the ssp. virginiana extends farther north and west.
It is considered a good plant for adding late-season flowers to a garden. Fertile soils produce robust growth and wide spreading, and the plant may require staking. When it grows tall it has a “tendency toward floppiness” that can be controlled with pruning. It can be aggressive and dominate a landscape.
(from Wikipedia on 18.9.16)
Physostegia virginiana from California-New for our database-GSSEP2016/02 : 1 post by 1 author. Attachments (2)
Common names: Obedient plant, False dragonhead
Found this beautiful ornamental, growing here in Fremont, California and flowering this month (Sept.’16) only.