rachis


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Related to rachis: petiolule

rachis

[′rā·kəs]
(anatomy)
The vertebral column.
(biology)
An axial structure such as the axis of an inflorescence, the central petiole of a compound leaf, or the central cord of an ovary in Nematoda.
References in periodicals archive ?
Clusters affected by bunchstem necrosis are identified by necrotic (dead) rachis tissue, with shriveled berries distal to the necrotic tissue.
smooth; blades 15-40 cm long, oblong triangular, pinnate; rachis winged; sori submarginal under reflexed margins of blade.
The RockHopper development kits include an NEC VR Series(TM) RockHopper reference board consisting of a common baseboard with peripheral component interconnect (PCI) slots and many standard peripheral interfaces, a separate CPU card that connects to a host computer and the Rachis board support package, featuring Rachis' OEM Adaptation Layer (OAL) software, peripheral device drivers and technical support.
Leaves 1-2 m long, rachis scales thin, flat, loosely spreading to appressed; abaxial surfaces of rachises and costae without hairs; South Pacific Islands, Central and South America 2.
The final step is to secure the middle of the quilled strip to the rachis.
globulifera, which it resembles in some of its vegetative characteristics, particularly the columnar to narrow volcano-shaped glands on the rachis between each pair of pinnae.
Enquete retrospective des tendino-myalgies du rachis rencontrees dans une consultation de rhumatologue dans le cadre d'n centre anti douleur.
In contrast, the staminate inflorescence of Lasiocroton is racemose to subpaniculate with a rachis ranging from 5 to 25 cm.
We have compared various specimen sources and have found that the rachis segment of a feather is a good DNA source for determining sex.
scheuchzeri, 14 slide-mounted preparations of adaxial and abaxial cuticles (unpublished data, 1991) document the epidermis from different positions along the ultimate rachis.
Leaf apex gradually long-tapered (attenuate), often very elongated; gland-tipped hairs scattered along rachis and leaflets or absent; bulblets smooth, 2-3 mm in diameter and found on rachis and leaflets C.
Microsoft and Broadcom will work with systems integrator Rachis Corp.