Avascular
(Science: pathology) without blood or lymphatic vessels; may be a normal state as in certain forms of cartilage, or the result of disease.
Synonym: nonvascular.
Dictionary > Avascular
You will also like...
Bryophytes
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, the liverworts, and the hornworts. These groups of plants require external water, usually in the form of dew or rain. Some of them grow exclusively in dark, damp environments in order to provide moisture. Find out more about them here...