mericarp


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

mericarp

one seeded portion of a dry fruit or SCHIZOCARP split off from a SYNCARPOUS ovary at maturity.
References in periodicals archive ?
The possibility exists that a mucilaginous mericarp might adhere to a fallen leaf, which might then function like a wing for wind dispersal, but this mode of dispersal seems highly unlikely and certainly not typical of a species (van Rheede van Oudtshoorn & van Rooyen, 1999).
The resistance of the mericarp to digestion, the ability of the seed to germinate, and the establishment of the seedling are all subject to natural selection, even when dispersal is accidental.
barrelieri from Spain and North Africa, have calyces that are deflexed downward in fruit (Hedge, 1974), but it is not known if they exhibit hygroscopic movement in association with mericarp release.
The presence of cells with lignified walls on these bundles at ripeness, associated with the spongy tissue--mechanically more fragile at this region--and the invagination--occurred in early stages among lateral bundles--caused the separation of the mericarps, remaining the carpophore in the fruit axial region (Figure 4C).
Within Paullinieae, fruit are schizocarpic, separating into samaroid mericarps or septifragal capsules which expose the seeds.
ulmacea, these authors described that any line of dehiscence is formed by oxalate crystals and fruit are easily separated by hands into winged mericarps seeming to be exclusively septifragal capsules and the schizocarpic fruit description for this species is incorrect.
Such mericarps have no obvious adaptation for dispersal (Fig.
Among those species two produce wind-dispersed winged samaras and the other four have the wings greatly reduced and the mericarps probably dispersed by water.
Last segments of the bracts ovate, lanceolate to linear-lanceolate; rays of the flowering umbels [+ or -] straight to rather arched-convergent; secondary ridges of the mericarp with thick spines dilated and joined at the base .
Segments of the bracts linear-lanceolate to linear, slightly mucronate; secondary ridges of the mericarp with thick, antrorse or patent spines .
In the case of a 4-winged fruit, typically each dispersed mericarp will possess two wings.
2006) is 7-winged, and asymmetrically schizocarpic, with three wings (a median and two marginal wings) on one mericarp, and four wings (two lateral and two marginal) on the other.