California poppies and Shirley poppies are also known as Papaver rhoeas.    From Wordnik.com.  [coloradoan.com - Local News] Reference

The first photo is a late blooming Papaver somniferum.    From Wordnik.com.  [Rock My World-A Zen Garden « Fairegarden] Reference

Urtica, Caragana abundant along the bed of the river, Papaver.    From Wordnik.com.  [Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries] Reference

The annual poppies, Papaver somniferum are just beginning to open.    From Wordnik.com.  [May Bloom Day 2009 « Fairegarden] Reference

Oriental poppies, Papaver orientale in background, from neighbors Mae and Mickey.    From Wordnik.com.  [Time Marches On-2009 Bloom Day « Fairegarden] Reference

The above two shots are Papaver orientalis, passalongs from our dear neighbors long ago.    From Wordnik.com.  [Zoom Zoom-Canon SX1 IS « Fairegarden] Reference

The Latin name for those big, bright red oriental poppies is Papaver somniferum, literally what L.    From Wordnik.com.  [Hard Road] Reference

Papaver somniferum - mixed poppies (from Threadspider).    From Wordnik.com.  [British Blogs] Reference

"Foxglove" (Digitalis) and Papaver somniferum (Opiates).    From Wordnik.com.  [AlterNet.org Main RSS Feed] Reference

Papaver, having large flowers, often a vivid red, and a milky sap.    From Wordnik.com.  [Conservapedia - Recent changes [en]] Reference

Candolle, Alp. de, on variation in oaks, 77 on variability of Papaver bracteatum, 79.    From Wordnik.com.  [Darwinism (1889)] Reference

The big orange Poppies (Papaver orientalis 'Brilliant') are now putting on their annual show.    From Wordnik.com.  [Growing Up] Reference

Above is Papaver somniferum.    From Wordnik.com.  [About The Light-May « Fairegarden] Reference

Papaver orientale and allium ‘Purple Sensation’.    From Wordnik.com.  [May Bloom Day 2008 « Fairegarden] Reference

Papaver somniferum, ii.    From Wordnik.com.  [Zoonomia, Vol. II Or, the Laws of Organic Life] Reference

Papaver somniferum, var. nigrum.    From Wordnik.com.  [The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use.] Reference

Papaver somniferum, in the early 1800s.    From Wordnik.com.  [Telegraph.co.uk: news, business, sport, the Daily Telegraph newspaper, Sunday Telegraph] Reference