Grindelia

Grindelia squarrosa, also called Grindelia, is a species of plant from the genus Grindelia within the family Asteraceae (composite plants). The plant is best known for its resin, which coats stems, leaves and the bracts of the flowers with a sticky resin, and is used in homeopathy. 2 to 5 cm large yellow flower heads, flowering time is May to June.

Phytotherapeutically used are the dried stem tips with flowers, leaves and stems(Grindeliae herba - Grindeliaherb ).

Grindelia squarrosa can appear as a biennial or perennial plant and is of herbaceous form.

As a semi-shrub, however, the plant usually flowers only in the first year and is quite short-lived. It reaches a height of between 40 and 100 cm. The alternate foliage leaves are thickened with oval spans that grow to 15 to 70 mm long. The terminal inflorescences stand in open racemes with a thread-like or lancet-like shape. The plant flowers between July and September. After flowering, white, brown or grey fruits are formed, which are between 1.5 and 4.5 mm long; their tips are smooth and crown-like.

Grindelia squarrosa is the parent plant of Grindeliae herba

1. https://arzneipflanzenlexikon.info/grindelia.php