This section is from the book "The Botanical Magazine; Or, Flower-Garden Displayed", by William Curtis. Also available from Amazon: The Botanical Magazine; or, Flower-Garden Displayed, Volume I.
Alyssum Saxatile. Yellow Alyssum.
Filamenta quaedam introrsum denticulo notata. Silicula emarginata.
ALYSSUM saxatile caulibus frutescentibus paniculatis, foliis lanceolatis mollissimis repandis. Linn. Syst. Veg, ed. 14. Murr. p. 590. Ait. Hort. Kew. p. 381.
ALYSSUM Creticum Saxatile, foliis undulatis incanis. Tourn. cor. 15.
THLASPI luteum leucoji folio. Bocc. muf. 79. t. 93.
As this plant has very generally obtained in gardens and nurseries the name of yellow Alyssum, we have retained it; for though it is not the only one of the genus which produces yellow flowers, it may still be called yellow by way of eminence, such is the extreme brilliancy and profusion of its blossoms.
It is a native of Crete, and was first cultivated in this country by Mr. Miller, in 1731, at Chelsea garden.
It begins to flower about the latter end of April, and continues to blossom through great part of May; and it is not uncommon for it to flower again in autumn.
If it has a pure air and a dry situation, it will grow in almost any soil.
The usual mode of propagating it is by slips, or cuttings. As it is a small, shewy, hardy plant, and not disposed to over-run others, it is very suitable to embellish rock-work.
 Ait. Hort. Kew.