Stinging Nettle
Urtica dioica
Among 626 hypertensive/diabetic patients, in Morocco, 2/3 use herbal medicine. Urtica dioica is among the most used by hypertension patients
Young leaves are reported by many to make a delicious and healthy tea.
From King's American Dispensatory
Botanical Source.—This plant is a perennial, herbaceous, dull-green plant, armed with minute rigid hairs or prickles, which transmit a venomous fluid when pressed. The stem is obtusely 4-angled, branching, 2 to 4 feet high, arising from a creeping and branching root, with fleshy shoots and many fibers. The leaves are opposite, petiolate, cordate, lance-ovate, spreading, conspicuously acuminate, coarsely and acutely serrate, the point entire, armed with stings, and are 3 or 4 inches long, and about half as wide.
The flowers are small, green, monoecious or dioecious, in branching, clustered, axillary, interrupted spikes, longer than the petioles.
This is a well-known plant, common to Europe and the United States, growing in waste places, by woodsides, in hedges, and in gardens, flowering from June to September. A decoction of the plant, strongly salted, will quickly coagulate milk without imparting to it any unpleasant flavor. The leaves and root are generally used, and yield their virtues to water.
A fabric, known as nettle-cloth, has been woven from the bast fibers of nettle. The young shoots have been boiled and eaten as a remedy for scurvy. The irritation caused by rubbing the sharp hairs of the nettle on the skin, is believed to be caused by the free formic acid which they contain.