More to explore:
For meriah! Finding a large quantity of Portuguese blogs with amazing crochet projects. This one has charts.
...Fazendo Crochê...: Pelerine
Crochet poncho ♥LCP-MRS♥ with diagram. --- Poncho Circulos de Amor Patron - Patrones Crochet
Shawl pattern - Site is not english but chart is. Click on image to see instructions.
Poncho Flores Crochet Patron - Patrones Crochet
Patrones Crochet: Poncho Tunica Tejida Patron
ponchito tejido a crochet con su patron tejiendoalcrochet...
Chal Puntadas Intercaladas Patron - Patrones Crochet
I think the purple velvet scarf around the neck detracts from this but it's a beautiful wrap!
Cream BEIGE PONCHO TURTLENECK Crochet Victorian by marianavail, $95.00
Inspiration ~ baby poncho made with granny squares
Poncho blanco de ganchillo con gráficos - Crochet Poncho with white graphics
FASHION CROCHET PONCHO Capelet Brown Free Shipping by marianavail, $95.00
$65.00 crocheted poncho
Just a pic for inspiration. Looks to be two rectangles (knitted here, but could crochet), joined short to long edge on front and back, then a "neckline" added by working rows with decreases where the rectangles are joined.