Benjamin Samuel Williams (1824–1890), English orchidologist and nurseryman in London, known mainly for his horticultural notes on orchids in publications such as The Orchid Grower's Manual (London 1871), Select Orchidaceous Plants (London 1862 onwards) and The Orchid Album (London 1882-97).

Williams started as a gardener to Robert Warner, the botanist, at Hoddesdon

Hoddesdon

Hoddesdon is a town in the English county of Hertfordshire, situated in the Lea Valley. The town grew up as a coaching stop on the route between Cambridge and London. It is located southeast of Hertford, north of Waltham Cross and southwest of Bishop's Stortford. At its height during the 18th...

. He was a business partner of Robert Parker's in a nursery at Seven Sisters Road in Holloway

Holloway, London

Holloway is an inner-city district in the London Borough of Islington located north of Charing Cross and follows for the most part, the line of the Holloway Road . At the centre of Holloway is the Nag's Head area...

 between 1854 and 1861, and later moved to the nearby Victoria and Paradise Nurseries.

This botanist is denoted by the author abbreviation B.S.Williams when citing

Author citation (botany)

In botanical nomenclature, author citation refers to citing the person who validly published a botanical name, i.e. who first published the name while fulfilling the formal requirements as specified by the International Code of Botanical Nomenclature...

 a botanical name

Botanical name

A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature and, if it concerns a plant cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants...

.