| crenate | = scalloped | margin |  | Having regularly alternating, rounded convexities and concavities oriented more or less perpendicular to the generalized perimeter.  See also crenulate (small-scalloped), dentate, denticulate (small-toothed), serrate (sawtoothed), serrulate (small-sawtoothed). | 
          
                  | …crenate | = …-scalloped | margin |  | Having the number of orders of crenae (scallops) indicated by the prefix, one upon another; as in bicrenate, twice-crenate.  See also …dentate (…-toothed), …serrate (…-sawtoothed). | 
          
                  | crenulate | = small-scalloped | margin |  | Finely crenate (scalloped).  See also dentate (toothed), denticulate (small-toothed), serrate (sawtoothed), serrulate (small-sawtoothed). | 
          
                  | crenule | = scalloplet | FEATURE |  | A diminutive crena (scallop).  See also dens (tooth), sawtooth, sawtoothlet, toothlet. | 
          
                  | crescent-shaped | = lunate | plane shape |  | Arcuate, broadest at the middle, and attenuate to acute ends; like the stylized outline of a first-quarter moon. | 
          
                  | crest | = crista | STRUCTURE |  | A laterally elongate, relatively thin, irregular or notched, apical protrusion. | 
          
                  | crested | = cristate | apex |  | Having a laterally elongate, relatively thin, irregular or notched protrusion. | 
          
                  | crispate | = crisped, curly | margin |  | Having closely and irregularly spaced, irregularly shaped, often compound convexities that curve irregularly through three dimensions. | 
          
                  | crisped | = crispate, curly | margin |  | Having closely and irregularly spaced, irregularly shaped, often compound convexities that curve irregularly through three dimensions. | 
          
                  | crista  pl. cristae | = crest | STRUCTURE |  | A laterally elongate, relatively thin, irregular or notched, apical protrusion. | 
          
                  | cristate | = crested | apex |  | Having a laterally elongate, relatively thin, irregular or notched protrusion. | 
          
                  | cross-fertilizing | = allogamous, allomictic, exogamous, xenogamous | reproduction | taxon | Having fertilization regularly involving gametes derived from different plants. | 
          
                  | cross-shaped 1 | = cruciate | architecture | corolla, perianth | Having four petals or tepals disposed in pairs of opposite members, the whole resembling a cross when viewed from above. | 
          
                  | cross-shaped 2 | = cruciate | solid shape |  | Having two elongate, basically straight portions intersecting at a point interior to the ends of each. | 
          
                  | cross-vein |  | STRUCTURE |  | A relatively short, secondary or higher-order vein that runs directly between two veins of the next lower order, intersecting them more or less perpendicularly. | 
          
                  | crowded | = compact, congested | architecture |  | Having equivalent constituent parts disposed very near to one another. | 
          
                  | crown-shaped | = coroniform | solid shape |  | Shortly and broadly tubular overall, circumferentially continuous at the base, distally so or not; like a monarch's crown. | 
          
                  | crozier | = fiddlehead | STRUCTURE |  | A circinate leaf (frond) prior to full expansion, while still wholly or distally coiled; esp. in Polypodiophyta. | 
          
                  | cruciate 1 | = cross-shaped | architecture | corolla, perianth | Having four petals or tepals disposed in pairs of opposite members, the whole resembling a cross when viewed from above. | 
          
                  | cruciate 2 | = cross-shaped | solid shape |  | Having two elongate, basically straight portions intersecting at a point interior to the ends of each. | 
          
                  | cruciferous | = anisocytic | architecture | stomate | Having three subsidiary cells, one distinctly smaller than the others. | 
          
                  | crumbling | = fatiscent; > farinaceous, mealy | texture |  | Easily disintegrating in relatively small pieces, either spontaneously or under pressure. | 
          
                  | crumpled | = corrugate | aestivation |  | Having members tightly and irregularly folded, the whole appearing as though wadded upon emergence. | 
          
                  | crustaceous | = crusty | texture |  | Thin, dry, hard, and brittle. | 
          
                  | crusty | = crustaceous | texture |  | Thin, dry, hard, and brittle. |