Between 1959 and 1963 in Florida, USA Alex Hawkes produced his "Bromeliad Papers" and in trying to tidy up hybrids listed by Mez in the Bromeliad Monograph in Das Pflanzenreich (1935) without specific names, gave them names after friends, both human and feline, and after place names. None of the plants were in existence in the USA. Most had originated some 30 years earlier but the meticulous Europeans had not considered them worthy of a latinised name as was the rule at that time. In any event these plants would undoubtedly have been non-existent in Europe by the 1960's.

Alex Hawkes's names are listed below for reference should anyone in the future again come across the "Bromeliad Papers" and wonder why the names have not been accepted as Cultivar names. There is a clash of interpretation between the ICBN rules which relies on dead herbarium material and accepts a certain variability in definitions of species. On the other hand the ICNCP rules cover the living plant and its propagation, and has a certain narrow definition of a Cultivar. Hawkes's names were not acknowledged in Smith's Flora Neotropica 1979.

GENUS	NAME	PARENTS
Billbergia	Brazil	distachia v. distachia x nutans
Billbergia	Coconut Grove	bakeri x speciosa
Billbergia	Don Leo F. Salazar	zebrina x sanderiana
Billbergia	Katherine H Chatham	decora x iridifolia
Billbergia	Kee-Kee	xoberthueri x speciosa
Billbergia	Lois Hancock	decora x saundersii (note that this hybrid prevails under xleopoldii as in Flora Neotropica p2035
Billbergia	Mibbs Whelan	pyramidalis x nutans
Billbergia	Mousie	lietzei x nutans
Billbergia	Nefertiti	nutans x amoena v. amoena
Billbergia	Oon-Tah	xoberthueri (or vittata x speciosa)
Billbergia	Puddles	vittata x xoberthueri
Billbergia	Santa Maria de Ostuma	horrida x amoena v. amoena
Billbergia	Yaki	euphemiae x amoena
Guzvriesea	Carl Mez	Vriesea incurvata x Guzmania zahnii
Nidularium	Beryl Allen	innocentii x billbergioides (bracteata)
Nidularium	Robert Agnew	innocentii v. paianum x procerum
xNidulistrum	Frank H Overton	Nid billbergioides (bracteata) x Can. lindenii v. roseum
Pitcairnia	Christiane Heller	punicea x xanthocalyx
Pitcairnia	Flor de Luz	integrifolia (anthericoides) x xanthocalyx