That's quite an impressive and fairly comprehensive list but I'm sure we'll do our best to supplement it. How about you Paul, have you got a suggestion up your sleeve?
To be quite honest Doc I was into this type of music years ago but I kind of tired of it a bit. While I can appreciate funk, I'm not really a huge fan, and I never quite knew where psychedelic soul ended and funk began. I think I liked the idea of psychedelic soul music more than many of the albums if that makes sense. That said, it's probably better music to dance to rather than to listen to at home.
But to answer your question- Black Merda and Purple Image sprung to mind.
Good points, I'm sure there have been many discussions here before on what defines psychedelia in music in the first place and usually agreed on that individuals will have their own take on what they find a 'mind altering' experience. So, for me, adding another cross-over element such as soul is a double head scratcher. The fact that there was even a track called 'Psychedelic Soul' by Saxie Russell which celebrated the genre but managed (to my ears) to sound not very psychedelic says it all! Having said that I suppose we should give a fair degree of license for suggestions so if someone suggested the 45 Wildflower by Skylark, for example, I wouldn't throw them out of court.
I do love myself a bit of psychedelic soul, though I do sometimes wonder what's the difference between early funk and psychedelic soul as both can feature fuzzed up guitar parts,Soulful harmonies over a groovy danceable beat, usually with heavy basslines at the forefront of the sound, though as the 70s wore on funk took a more commercial slant towards a disco Vibe.
I like the label Black Rock as was an album title for The Bar-kays, though psychedelic soul indeed had it's own vibe and sound compared to those groups that got called acid rock,or indeed psychedelic rock, though a band like Next Morning could rock out as any of those acid rock could!!
Psychedelic soul seems to have been a predominantly Black American thing, made slightly commercial by Norman Whitfield at Motown Records with the likes of The Temptations & Edwin Starr.
Though supposedly hyped psychedelic soul albums can be disappointing as on many cases there are about 4 psychedelic soul numbers among the usual unpsychedelic soul sounds, The Chambers Brothers are an excellent example, they recorded about a handful of psyched up soul numbers though they issued a host of albums that are unpsychedelic,even the album "The Time Has Come"after their magnificent song of the same name is basically an album of soul and gospel.
Though through the years 68-72, there is indeed some mighty Psych Soul numbers by the likes of The Meters, Black Merda, The Politicians, The Counts, Eugene McDaniels,Funkadelic/Parliament and many more including even James Brown, though others would call them funk too, so there seems to be a crossover sound I'd say for a while.
There are compilations of rare funk from small labels covering the late 60s/early 70s that have some really psychedelic sounding soul, though under the funk umbrella,so maybe for a while at this time it was possibly the same thing but recognised differently from different people,as the music press was predominantly White at this time as where the top record execs, who may have coined the term psychedelic soul, who knows, that could be a reasonable explanation to the confusion between early funk and psychedelic soul,as it's possible the musicians in those predominantly black groups called it funk and not psychedelic soul they were creating and recording??
Great points Stuart, I just thought of two more that fit (IMHO) into the psychedelic soul bracket- Lee Moses's Time and Place and Chubby Checker's Chequered. Both excellent albums. I think the Temptations Psychedelic Soul put me off the genre, I just didn't find it psychedelic at all if I remember rightly. But it was a long time since I listened to it!