WordNet sense 1 ((of plants) growing in small dense clumps or tufts):

caespitose, cespitose

WordNet sense 2 ((of plants) growing together in groups that are not close together):

ungregarious

WordNet sense 3 ((of a bird or animal) having a usually ornamental tuft or process on the head; often used in combination):

crested, topknotted

WordNet sense 4 (provided with something intended to increase its beauty or distinction):

adorned, decorated