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asuarina, and has since been found to occur regularly in the families Betulaceæ and Juglandaceæ. Partial chalazogamy is found in Ulmus, the tube here penetrating the nucleus midway between the chalaza and micropyle. --Chal`a*zo*gam"ic (#), a.

A cycadaceous plant of Florida and the West Indies, the Zamia integrifolia, from the stems of which a kind of sago is prepared.

A genus of bulbous plants, of the order Amaryllidace, cultivated as greenhouse plants on account of their beauty.

A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. C. vernus is one of the earliest of spring-blooming flowers; C. sativus produces the saffron, and blossoms in the autumn.

A genus of orchidaceous plants including the lady's slipper.

A small fish; the dace.

A fish; the dace. See Dace. Dart sac (Zoöl.), a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure.

The European dace.

A genus of South American amaryllidaceous plants with large and beautiful white blossoms.

The West Indian sapindaceous tree Melicocca bijuga, which yields the honeyberry; also, the related trees Exothea paniculata and E. trifoliata.

A small European fresh-water fish (Leuciscus vulgaris); - called also dobule, and dace.

l.), a British wild bee (Osmia bicornis), having two little horns on the head. -- Horned dace (Zoöl.), an American cyprinoid fish (Semotilus corporialis) common in brooks and ponds; the common chub. See Illust. of Chub. -- Horned frog (Zoöl.), a very large Brazilian frog (Ceratophrys cornuta), having a pair of triang…

The lower or apparently anterior petal of an orchidaceous flower, often of a very curious shape.

Any orchidaceous plant of the genus Cypripedium, the labellum of which resembles a slipper. Less commonly, in the United States, the garden balsam (Impatiens Balsamina).

A name given to several species of the orchidaceous genus Spiranthes, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair.

, the spotted hyena. See Hyena. -- Laughing jackass (Zoöl.), the great brown kingfisher (Dacelo gigas), of Australia; -- called also giant kingfisher, and gogobera. -- Laughing owl (Zoöl.), a peculiar owl (Sceloglaux albifacies) of New Zealand, said to be on the verge of extinction. The name alludes to its notes.…

The odd and peculiar petal in the Orchis family. See Orchidaceous.

Either one of two asclepiadaceous shrubs (Calotropis gigantea, and C. procera), which furnish a strong and valuable fiber. The acrid milky juice is used medicinally.

Any plant of the order Naiadaceæ, such as eelgrass, pondweed, etc.

A genus of tropical orchidaceous plants, the flower of one species of which (O. Papilio) resembles a butterfly.