inequilateral


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inequilateral

[in¦ē·kwə′lad·ə·rəl]
(biology)
Having the two sides or ends unequal, as the ends of a bivalve mollusk on either side of a line from umbo to gape.
References in periodicals archive ?
Concha pequena, solida, trapezoidal, inequilateral con los umbos anteriores, los bordes dorsal posterior y ventral son casi paralelos, el borde anterior algo concavo en la region umbonal y redondeado en el resto, el borde posterior ampliamente redondeado; charnela con ligamento externo y un pequeno resilio, valva derecha con tres dientes cardinales,un lateral anterior y otro posterior, la valva izquierda con dos cardinales y dos laterales; escultura con 11 a 13 costillas radiales prominentes de aspecto nodular escamoso, los interespacios son anchos y algo profundos; periostraco pardo claro y color externo de la concha blanco amarillento, interior blanco a veces con manchas cafe y con los surcos producidos por la escultura externa, los bordes internos son crenulados.
4 mm; pseudoparaphyses hyaline, abundant, filiform, branched, longer than asci; epithecium compact; asci clavate to cylindrical, 8-spored, (55-)70-170 x 10-18 [micro]m; ascospores yellow-brown to reddish brown, uniseriate to partially biseriate, muriform, not parenchymatic, with [3-5(-7)] transverse and 1 longitudinal septa, ellipsoid to obovoid, sometimes slightly inequilateral, constricted at the median septum, (12-)15-24(-26) x (5-)6-10(-11) [micro]m.
Leaflets chartaceous to papyraceous, inequilateral,
0 mm, ovate, brown, opaque, dispersed, marginally entire; blades 12-21 x 4-7 cm, lanceolate, chartaceous to spongiosus, basically truncate equilateral to inequilateral, apically acute to acuminate; costal scales 1-2 x 0.
Shell large and flat, rounded to oval, equivalve and inequilateral, similar to Anodonta, but with a solid, flat shaped and crenulated cardinal teeth on the right valve.