Thyrsacanthus

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Standard Cyclopedia of Horticulture

Thyrsacanthus (Greek, thyrse and flower). Acanthaceae. Erect, glabrous, pubescent or villous herbs, which are adapted to the warmhouse. Lvs. opposite, entire; usually large: fls. red, fascicled at the bract-axils, pedicelled; fascicles or cymes arranged in a terminal thyrsoid, simple raceme or paniculately branched; calyx short, rather 5-parted, segms. narrow, acute or acuminate; corolla-tube elongate, straight or somewhat incurved, limb somewhat 2-lipped, 4-cleft; stamens 2, staminodia 2; disk rather thick: caps. oblong; seeds 4 or fewer by abortion.— About 23 species, Trop. Amer. The oldest and now accepted name of the genus is Odontonema. O. callistachyum, Kuntze (Thyrsacanthus callistachyus, Nees. T. lilacinus, Lindl. Justicia lilacina, Hort.). Shrub, 2 ft. high: lvs. oblong, petioled, tomentose: fls. red; sepals pubescent, bristly-acuminate; corolla glabrous. Mex. J.F. 2:165. CH 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 It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article.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.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

External links

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