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Allium hyalinum, the glassy onion, grows from a cluster of bulbs, with each bulb sending up a tall stem. [5] Atop each stem is an inflorescence of up to 25, but usually fewer, white or pink-tinted white flowers. The flowers have six shiny tepals which become transparent as they age. [5] formerly included [3]
Allium bisceptrum, also known as the twincrest onion or aspen onion, is a high elevation plant native to western United States. It is a perennial that thrives under damp and shady conditions or open meadows in California , Arizona , New Mexico , Nevada , Oregon , Washington , Idaho , and Utah .
Allium flavum (yellow) and Allium carinatum (purple). Allium is a large genus of monocotyledonous flowering plants with around 1000 accepted species, [4] [5] making Allium the largest genus in the family Amaryllidaceae and amongst the largest plant genera in the world. [6]
Allium giganteum, common name giant onion or giant leek, is an Asian species of onion in the Onion Family , native to central and southwestern Asia but cultivated in many countries as a flowering garden plant. [4] [5] It is the tallest species of Allium in common cultivation, growing to 1.5 metres (4.9 ft). [6]
Allium validum is a species of flowering plant commonly called swamp onion, wild onion, Pacific onion, or Pacific mountain onion. It is native to the Cascade Range , the Sierra Nevada , the Rocky Mountains , and other high-elevation regions in California , Oregon , Washington , Nevada , Idaho and British Columbia .
Allium acuminatum produces bulbs that are spherical, less than 2 cm across and smelling like onions. [4] Scape is up to 40 cm tall, wearing an umbel of as many as 40 flowers. The flowers are pink to purple with yellow anthers.
Allium neapolitanum is a bulbous herbaceous perennial plant in the onion subfamily within the Amaryllis family.Common names include Neapolitan garlic, [2] Naples garlic, daffodil garlic, false garlic, flowering onion, Naples onion, Guernsey star-of-Bethlehem, star, white garlic, and wood garlic.
Allium lemmonii is a species of wild onion known by the common name Lemmon's onion, named for botanist John Gill Lemmon (1831–1908). [3] It is native to the western United States, at elevations of 1200–1900 m in the Great Basin of Utah , Nevada , northern and eastern California , eastern Oregon , southwestern Idaho .