Ann Budd's "Punctuated Rib Socks" from the pattern book Knitting Socks with Handpainted Yarn edited by Carol Sulcoski and knitted using Mountain Colors Bearfoot in colorway Red Willow.
And, yes, they are toe-up socks.
Sorry for the goofy angles. (Do you know how hard it is to take pictures upside down? I had to model the socks on my feet to get the pictures. Head. Rush.)