Verbena rigida var. rigida

Standard Cyclopedia of Horticulture

Verbena venosa, Gill. & Hook. Differs from all other cult. kinds by panicled infl. and tuberous roots: herbaceous perennial, 1 ft. high: sts. simple, rhizomatic, creeping at base, ascending, 4-angled, hairy: lvs. rigid, oblong to oblong-lanceolate, the subcuneate base entire and half-clasping, acute at apex, unequally subincisely dentate, the teeth openly acuminate, nerves prominent, hirsute below: spikes in a close terminal panicle, sub-ternate, lateral ones pedunculate, fastigiate and finally cylindrical: bracts subulate, ciliate, often purplish, exceeding the hairy calyx: corolla lilac or bluish purple to nearly sky-blue, very thinly villous without; tubes slender, thrice as long as calyx: fr. 1 line long, copiously fuscous outside, dorsal ridges 5. S. Brazil and Argentina. B.M. 3127.—Tubers may be kept indoors over winter, or species prop. by seeds sown in greenhouse in Jan. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.