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- Single file. See under 1st File. -- Single flower (Bot.), a flower with but one set of petals, as a wild rose. -- Single knot. See Illust. under Knot. -- Single whip (Naut.), a single rope running through a fixed block.

The Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head. Dr. Prior. Snake's-head iris (Bot.), an iridaceous plant (Hermodactylus tuberosus) of the Mediterranean region. The flowers slightly resemble a serpent's open mouth.

irregular sea urchins, usually having a more or less heart-shaped shell with four or five petal-like ambulacra above. The mouth is edentulous and situated anteriorly, on the under side.

ergot; as, spurred rye. Spurred corolla (Bot.), a corolla in which there are one or more petals with a spur.

The upper petal or banner of a papilionaceous corolla.

Of or pertaining to a natural order (Sterculiaceæ) of polypetalous exogenous plants, mostly tropical. The cacao (Theobroma Cacao) is the most useful plant of the order.

A combining form or prefix signifying four, as in tetrabasic, tetrapetalous.

Bearing the stamens directly on the receptacle; -- said of a subclass of polypetalous dicotyledonous plants in the system of De Candolle.

The orifice of a tubular organ; the outer end of the tube of a monopetalous corolla; the faux, or fauces. Throat brails (Naut.), brails attached to the gaff close to the mast. -- Throat halyards (Naut.), halyards that raise the throat of the gaff. -- Throat pipe (Anat.), the windpipe, or trachea. -- To give one the…

The narrow, hollow part of a gamopetalous corolla.

Furnished with a claw, or a narrow stalklike base, as the petals of a carnation.

The slender base of a petal in some flowers; a claw; called also ungula.

Meeting at the edges without overlapping; -- said of the sepals or the petals of flowers in æstivation, and of leaves in vernation.

Of or pertaining to that surface of a carpel, petal, etc., which faces toward the center of a flower.

Of or pertaining to a natural order (Verbenaceæ) of gamopetalous plants of which Verbena is the type. The order includes also the black and white mangroves, and many plants noted for medicinal use or for beauty of bloom.

Of or pertaining to the vexillum, or upper petal of papilionaceous flowers. Vexilary æstivation (Bot.), a mode of æstivation in which one large upper petal folds over, and covers, the other smaller petals, as in most papilionaceous plants.

The upper petal of a papilionaceous flower; the standard.

peculiar faculty belonging to the flowers of certain plants of opening and closing their petals as certain hours of the day. [R.]

A genus of polypetalous herbaceous plants, including all kinds of violets.

A peculiar New Zealand shrub (Coriaria ruscifolia), in which the petals ripen and afford an abundant purple juice from which a kind of wine is made. The plant also grows in Chili.