: Rudbeckia. Purple Cone-Flower: Echinacea.


: Arboriculture.


(Greek, dust-line). Formerly Dictyogramma. Polypodidceae. A few Japanese and Pacific island ferns, with naked sori, which follow the course of the free or reticulated veins. The species are sometimes referred to Gymnogramma. Strong-growing indoor-ferns, useful for specimen plants.


Diels. Leaves simply pinnate or bipinnate at the base, 1 1/2-2 ft. high, the pinnae 6-12 in. long and an inch wide; sori extending from the midrib to the edge. Japan and Formosa. - Also known as Gymnogramma japonica. An interesting fern of rather strong growth, and very distinct in appearance. Grows best in a moderate temperature-for example, 55-60°-and requires an open and well-drained soil of peaty character. r. c. Benedict †


(Greek name). Umbelliferse. Two weedy biennial plants, widely distributed. C. maculatum, Linn., is the poison hemlock, "by which," as Gray writes, "criminals and philosophers were put to death at Athens." It is a rank, much-branched European herb which has run wild in E. N. Amer., and which has been offered in the trade as a border plant. It is biennial, rank-smelling, and poisonous, and is scarcely worth cult, although the finely cut dark foliage is highly ornamental. It grows from 2-4 ft. high, and has large umbels of small white flowers See Poisonous Plants.

In North America the word hemlock is used for the hemlock spruce, Tsuga.


(Greek, cone head). One of the liverworts (Marchantiaceae), with broad flat forking evergreen thallus, growing on moist banks, like a moss. C. conicus, Dumort., is sometimes offered by collectors as a cover for rockeries, but can scarcely be said to be a cultivated plant.


: Eupatorium.


(name refers to the cone-shaped inflorescence). Araceae. A name proposed by Schott for certain aroids, but now made a section of Amorphophallus. C. Konjac, Koch., is Amorphophallus Rivieri variety Konjac, Engler. The great tuber is much grown in Japan for the making of flour (see Georgeson, A.G.13:79). Amorphophallus Rivieri is figured on p.

276, Vol. I.; also in R.H. 1871, p. 573; and in B.M. 6195 (as Proteinophallus Revieri). Konjak is offered by importers of Japanese plants.


: Claucena


: Zamia integrifolia.


(from copaiba, Brazilian name of the balsam derived from some of these trees). Syn. Copaiba. Leguminosae. Sixteen or more spineless trees of tropical Amer., and Africa, with abruptly pinnate leaves, small mostly white, not papilionaceous flowers in panicles, interesting because several of them produce an oleo-resin known as copaiba. They are not in cultivation, except now and then in collections of economic plants.


: material from the coconut, which see (p. 811).

Coral Berry

: Symphoricarpus vulgaris

Coral Drops

: Bessera elegans.


: Jatropha