Columbia Encyclopedia

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Christ's-thorn

(Encyclopedia)Christ's-thorn, name for several Old World plants popularly said to have composed the crown of thorns. It is applied most often to two members of the family Rhamnaceae (buckthorn family): (1) the Jeru...

daphne, in botany

(Encyclopedia)daphne, common name for, and genus name of, certain low deciduous or evergreen shrubs native to Eurasia. In the United States several naturalized species are cultivated for their handsome foliage and ...

dill

(Encyclopedia)dill, Old World annual or biennial plant (Anethum graveolens) of the family Umbelliferae (parsley family), cultivated since at least since 400 b.c. The pungent, aromatic leaves and seeds are used for ...

umkokola

(Encyclopedia)umkokola, small, thorny S and E African tree (Dovyalis caffra, also called kei-apple), widely cultivated in its native area for the round or oval bright yellow fruits. Their juicy pulp, acid in flavor...

pokeweed

(Encyclopedia)pokeweed or pokeberry, tall, bushy perennial herb (Phytolacca americana) native to North America but cultivated and naturalized in Europe. The long clusters of white flowers are followed by purplish b...

ground ivy

(Encyclopedia)ground ivy, trailing perennial herb of the genus Glechoma of the family Labiatae (mint family), closely related to catnip and naturalized from Europe. It forms a dense ground cover and spreads rapidly...

sweet fern

(Encyclopedia)sweet fern, common name for several plants belonging to different botanical divisions. One is a shrub of the family Myricaceae (bayberry family) in the division Magnoliophyta; others are plants of the...

winterberry

(Encyclopedia)winterberry, name for two species of shrubs or small trees of the genus Ilex of the family Aquifoliaceae (holly family), native to the eastern half of North America. Both are deciduous but have winter...

cattail

(Encyclopedia)cattail or reed mace, any plant of the genus Typha, perennial herbs found in almost all open marshes. The cattail (also called club rush) has long narrow leaves, sometimes used for weaving chair seats...

Bermuda grass

(Encyclopedia)Bermuda grass, perennial pasture, lawn, and hay grass (Cynodon dactylon) of the family Poaceae (grass family), native to Africa and Asia and now common in warm regions of both hemispheres. It is the s...