All Floras      Search Specimen
Login | eFloras Home | Help
IBSC | Family List | Angiospermae | Acanthaceae

Acanthus Linn.


Description from Flora of China

Acanthodus Rafinesque.

Shrubs or perennial herbs, erect or decumbent, without cystoliths. Leaves opposite [whorled or in a basal cluster], petiolate; leaf blade margin entire, pinnatifid, or spinously toothed. Inflorescences in terminal [or axillary], uninterrupted spikes; bracts imbricate, ovate, growing in size as plant matures, margin spiny; bracteoles 2 or sometimes absent. Calyx 4-lobed, posterior and anterior lobes larger, lateral pair of lobes smaller. Corolla tube very short, horny; limb of a single (lower) lip (upper lip sometimes rudimentary); lip elongate, obtusely 3-lobed. Stamens 4, paired, inserted at top of corolla tube, exserted; filaments stout, thickened, bony; anthers 1-thecous; theca linear-oblong, usually densely bearded, lacking basal appendages; staminodes absent. Ovary with 2 ovules per locule; style slender; stigma 2-cleft. Capsule not stipitate, ellipsoid, shiny, 4-seeded; retinacula present. Seeds ± compressed.

Acanthus mollis Linnaeus is cultivated in Chinese gardens so is not treated here.

About 20-25 species: tropical and subtropical regions of Old World; three species in China.

(Authors: Hu Jiaqi (胡嘉琪 Hu Chia-chi), Deng Yunfei (邓云飞); Thomas F. Daniel)


Related Objects  

Flora of China  
  • Acanthus (PDF)
  • PDF

    IBSC @
    Browse by
    Search by name

    Specimen Search

    People @ IBSC



     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |