This group of albucas and those names have long confused me also. The following descriptions are from the authoritative "Cape Plants" (Goldblatt & Manning, 2000) (note it is not an actual key to these species): A. hallii U.Muell.-Doblies 10-15cm, leaves few, linear, glandular, corkscrewed above, obtuse. Flowers March-May, yellow with green keels. Vredendal, Little Karroo. A. namaquensis Bak. To 30cm, bulb tunics membranous. Leaves many, channelled or rolled, usually coiled above, not clasping below, scabrid or hairy. Flowers September to October, yellow with green keels. Namibia to E Cape. A. spiralis L.f. 20-40cm, leaves few to many, linear, channelled or rolled, often spirally twisted above, clasping below, glandular-hairy and peduncle also glandular-hairy below. Flowers August to October, green, outer tepals with cream to yellow margins, sweetly fragrant. Namaqualand to Cape Peninsula. All three species have flowers with outer stamens sterile (a useful character in identifying albucas). I'm not sure how the authors differentiate between "corkscrewed" and "coiled" and "spirally twisted" here. Note that flowering times given are for the southern hemisphere and need to be converted by about six months for growers in the northern hemisphere. Dylan