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Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom.

Having eyes which are not elevated on a stalk; -- opposed to stalk-eyed. Sessile-eyed Crustacea, the Arthrostraca.

One of the sessile cirripeds; a barnacle of the genus Balanus. See Barnacle.

Any cirriped crustacean adhering to rocks, floating timber, ships, etc., esp. (a) the sessile species (genus Balanus and allies), and (b) the stalked or goose barnacles (genus Lepas and allies). See Cirripedia, and Goose barnacle. Barnacle eater (Zoöl.), the orange filefish. -- Barnacle scale (Zoöl.), a bark louse (Ce…

ozoic rocks. They were usually roundish or egg-shaped, and often unsymmetrical; some were sessile, others had short stems.

dicating the time. -- Flower head (Bot.), a compound flower in which all the florets are sessile on their receptacle, as in the case of the daisy. -- Flower pecker (Zoöl.), one of a family (Dicæidæ) of small Indian and Australian birds. They resemble humming birds in habits. -- Flower piece. (a) A table ornament mad…

The bell of a sessile gonozooid.

An order of sessile-eyed Crustacea, usually having seven pairs of legs, which are all similar in structure.

ving the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids. -- n.

A kind of apothecium in lichens, which is orbicular, flat, and sessile, and has a special rim not a part of the thallus.

. Those of starfishes have two movable jaws, or blades, and are usually nearly, or quite, sessile; those of echini usually have three jaws and a pedicel. See Illustration in Appendix.

eshy, leafless, usually flattened, and often prickly joints inserted upon each other. The sessile flowers have many petals and numerous stamens. The edible fruit is a large pear-shaped berry containing many flattish seeds. The common species of the Northern Atlantic States is Opuntia vulgaris. In the South and West are…

-- Sage willow (Bot.), a species of willow (Salix tristis) forming a low bush with nearly sessile grayish green leaves.

A genus of delicate branching hydroids having small sessile hydrothecæ along the sides of the branches.

laria, or of Sertularidæ, a family of hydroids having branched chitinous stems and simple sessile hydrothecæ. Also used adjectively.

A kind of flower cluster in which sessile flowers are arranged on an unbranched elongated axis. Spike grass (Bot.), either of two tall perennial American grasses (Uniola paniculata, and U. latifolia) having broad leaves and large flattened spikelets. -- Spike rush. (Bot.) See under Rush. -- Spike shell (Zoöl.), any p…

Having the eyes raised on a stalk, or peduncle; -- opposed to sessile-eyed. Said especially of podophthalmous crustaceans. Stalked- eyed crustaceans. (Zoöl.) See Podophthalmia.