Shares the common name Common Whitlowgrass with a related species: Erophila verna sens. lat. (mentioned on the BSBI webpages) and which is even more ubiquitous than the simple Erophila verna. It is not known which of these two the above photographs represent (they could be both?). [Clive Stace omits mention of sens. lat. version].

Not to be confused with : Grass Of Parnassus, Sea Arrow-grass, Marsh Arrow-grass, Sparrowgrass, Danish Scurvygrass, Common Scurvygrass, English Scurvygrass, Pyrenean Scurvygrass, Eelgrass, Yellow-eyed Grass, Blue-eyed Grass, Grass Poly, Grass-leaved Orache, Grass-wrack Pondweed or Grass [plants with similar names].

Not to be mistaken for : Hairy Whitlowgrass or Glabrous Whitlowgrass which have petals deeply cleft to only half-way rather than more than half-way in the case of Common Whitlowgrass. Also, Hairy Whitlowgrass is covered in densely grey downy hairs whereas Common Whitlowgrass is sparsely hairy, and Glabrous Whitlowgrass is sparsely downy rather than sparsely hairy.

Differentiated from other Whitlowgrasses by : the deep cleft (over half-way) in the four petals.

Slight resemblance to : Mouse-ears and Stitchworts which mostly also have deeply cleft petals, but they have five rather than four petals. Of the Mouse-ears, only Grey Mouse-ear has four rather than five petals, but it is silvery grey.

Common Whitlowgrass flowers early in the season and grows in dry places such as walls, rocks, mountains and bare dry places.

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