![]() Leaflets are obovate to wedge shaped, 12-23 mm long, 10-15 mm wide and glabrous. The spineless burrs can be distinguished from spineless barrel medic or disc medic burrs by the radiating veins on the coil surface which are strongly curved, fine and close together, whereas in the latter two species the radiating veins are fewer, almost straight, and rather indistinct (Quinlivan et al., 1986).Ĭv 'Circle Valley' is similar morphologically to 'Serena.' Stems are ribbed and develop a purple anthocyanin flush where they are exposed to the sun. This variety is rare but found scattered throughout the range of the whole species. There are forms with short spines and a variety brevispina which is spineless. The common name burr medic relates to the pods, which have long, slender spines hooked at the tip which readily adheres to wool. The fruits are hairless and have two to six anticlockwise coils. ![]() The length of the flower stalk is not consistent in this species as it may be longer or shorter than the corresponding leaf stalk. Among Western Australian medics, only 'Calvary' medic, an extremely rare species, shares this trait others have the keel longer, or equal to the wing petals. The flowers are in groups of two to eight and the wing petals are distinctly longer than the keel petals. The leaflets are wide and rather flat at the top, and sometimes have purple and white flecks on the upper surface or a small purple inverted V mark at the base of the leaf. Prolific seed production, rapid growth following fall rains, and ability to fix nitrogen make it closely resemble a true clover, which it is not (Murphy et al., 1976).īurr medic leaves are almost hairless. There are numerous prostrate stems in a dense stand they may become erect. The plant branches profusely at the base, and the stems are decumbent and attain a height of about 6 to 10 inches (Finch and Sharp, 1983). Burr medic is the best known plant among the medics (Murphy et al., 1976).
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