Hawthorn

The Crataegus species come from the rose family. They include the plants hawthorn, maythorn, hawthorn and mealythorn. There are 150 to 2000 species of hawthorn. The single-stemmed hawthorn is native to southern and northern Europe, Russia, Siberia, the Himalayas, North Africa, Chile and China, while the two-stemmed hawthorn is found throughout Europe.

The dried, flowering twigs (hawthorn leaves with flowers - Crataegi folium cum flore) and the dried fruits (hawthorn fruits - Crataegi fructus) are used phytotherapeutically.
Flowering time is May to June.

see under Crataegi folium cum flore

The following Crataegus species can be considered as official fruit, leaf and flower drugs
:Two-headed hawthorn, Single-headed hawthorn, Azarol hawthorn, Black-fruited hawthorn, Five-headed hawthorn.

These Crataegus species are defined as parent plants of the medicinally used, positively monographed(Commission E)"Crataegi folium cum flore", the hawthorn leaves with flowers.

The dried twigs with flowers, see under Crataegi folium cum flore, and also the dried fruits (hawthorn fruits - Crataegi fructus) are used for medicinal purposes.

1. https://arzneipflanzenlexikon.info/weissdorn.php
2. https://www.awl.ch/heilpflanzen/crataegus_arten/weissdorn.htm