The sulphur-yellow flowers of Aspalathus spinosa subsp. flavispina grow mostly solitary or in pairs from upper-stem leaf tufts where the spines also emerge. The flowers resemble those of A. spinosa subsp. spinosa.
The pleated, round-tipped banner, the biggest petal, recurves behind the pair of wings that angle out but with incurved tips, flanking the narrow keel.
In picture the long, straight spines among the leaves have already turned blackish brown, no longer living up to their flavispina, yellow spine name (Vlok and Schutte-Vlok, 2015; JSTOR; iNaturalist).