Definition of "crocusses"

The sun was up cheerily; the fresh pleasant green of spring had stolen, more like a tinted atmosphere, than in the guise of foliage, over tree and bush; field flowers and crocusses peeped from under the mossy turf.

1830, [Mary Shelley], chapter XVI, in The Fortunes of Perkin Warbeck, […], volume II, London: Henry Colburn and Richard Bentley, […], page 294

In the springtime, when the deep snow has given away, crocusses and snowdrops bloom, but there is nobody there to admire their beauty.

1967, Bruce Ramsey, “Looking Both Ways”, in Britannia: The Story of a Mine, Victoria, B.C.: Trafford Publishing, published 2004, page 125

The drifts of flowering snowdrops might have been matched elsewhere in Cardiff, but it is doubtful if the crocusses were, this early. Orange ones were at prime on a grassy slope and pale mauve ‘species’ crocusses, usually the first to appear, were in full spate among the slender leaf tufts.

2002 November, Mary E[leanor] Gillham, “Western Outliers; Fairwater, Victoria & Thompsons’ Parks”, in A Natural History of Cardiff – Exploring along the River Taff: Being an Account of the Animal and Plant Life in and around our Capital City, Caerphilly: Lazy Cat Publishing, part III (West Bank, Radyr, and to the City Centre), page 335