Horse outward similarity is an unreliable measure of relatedness. Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus". Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse,
Eriocephalus africanus an ingredient in medicinal and perfume products. The plant has been used in traditional medicine and in cooking. Essential oil extracts of "E. africanus" are prepared by steam distillation, and contain the following primary aroma components: Eriocephalus africanus Eriocephalus africanus is a bushy shrublet indigenous to South Africa. It has a wide distribution in the Western and Eastern Cape, and in Namaqualand. The plant has several common names in various languages. It is known as the Cape Snow Bush or Kapokbossie (the Afrikaans word for "snow bush"); other common names refer to its fancied resemblance to rosemary, for example "African