The list of the 184 specimens of the American botanical collection of János Xántus
sent to Hungary in 1861 is presented. Altogether 24 syntypes of 23 taxa were recognised
in this material: Abutilon xanti A. Gray, Amaranthus torreyi (A. Gray) Bentham ex
S. Watson var. suffruticosus Uline et W. L. Bray, Bahia parviflora A. Gray, Blitum
californicum S. Watson, Buddleja crotonoides A. Gray, Caesalpinia mexicana A. Gray
var. californica A. Gray, Caulanthus coulteri S. Watson, Celosia floribunda A. Gray,
Chaenactis xantiana A. Gray, Chorizanthe perfoliata A. Gray, Chorizanthe xanti S.
Watson, Clarkia xantiana A. Gray, Coursetia glandulosa A. Gray, Dyssodia speciosa
A. Gray, Gomphocarpus tometosus var. xanti A. Gray, Hyptis tephrodes A. Gray, Krynitzkia
microstachys Greene ex A. Gray, Macreightia intricata A. Gray, Nicotiana attenuata
Torr. ex S. Watson, Penstemon laetus A. Gray, Polygala xanti A. Gray, Solanum xanti
A. Gray, Viguiera tomentosa A. Gray; as well as isolectotypes of 2 taxa, i.e. Phaseolus
atropurpureus Sessé et Moçiño ex DC. var. sericeus A. Gray, and Stachys albens A.
Gray; and isoparatypes of 3 taxa, i.e. Amaranthus watsonii Standley, Froelichia xantusii
R. A. McCauley, and Kallstroemia peninsularis D. M. Porter.
