Abstract
There are 65 genera and 175 species of the Compositae in Formosa. The recently introduced species are Elephantopus spicatus, E. tomentosus, Ageratum Houstonianum, Aster subulatus, Erigeron crispus, E. sumatorensis, E. canandensis, Gnaphalium purpureum, Tridax procumbens, Cotula anthemoides, Soliva anthemifolia, Erechtites valerianaefolia, E. hieracifolia, Spilanthus Acmella. Considering the proximity of Formosa to Southern China and the manifest evidences of former land connection, the intimate relation between the two is supposed. The species common to Formosa and Southern China are : Vernonia patula, V. cinerea, Elephantopus scaber, Adenostemma Lavenia, A. parviflorum, Ageratum conyzoides, Eupatorium Lindleyanum, E. formosanum, E. japonicum, Mikania cordata, Solidago Virga-aurea subsp. leiocarpa, Grangea maderaspatana, Dichrocephala bicolor, Rhyncospermum verticillatum, Lagenophora stipitata var. microcephala, Aster altaicus, Aster ageratoides, Heteropappus hispidus, Kalimeris indica, K. Shimadai, Microglossa pyrifolia, Conyza viscidula, C. aegyptiaca, C. japonica, Blumea riparia, B. lanceolaria, B. balsamifera, B. sericans, B. sinuata, B. lacera, Lagera alata, Pulchea pteropoda, P. indica, Sphaeromorphaea australis, Sphaeranthus africanus, Anaphalis contorta, Gnaphalium multiceps, G. hypoleucum, G. japonicum, Carpesium abrotanoides, C. cernuum, C. acutum, C. divaricatum, Siegesbeckia orientalis, S. glabrescens, Eclipta prostrata, Wedelia chinensis, W. biflora, W. prostrata, Glossogyne tenuifolia, Bidens tripartita, B. pilosa, B. biternata, Synedrella nodiflora, Chrysanthemum arisanense, C. indicum, Centipeda minima, Artemisia campestris, A. capillaris, A. japonica, A. anomala, A. annua, A. Feddei, A. mongolica, A. dubia, Gynura japonica, Cacalia monantha, Emilia sonchifolia, Farfugium japonicum, Ligularia japonica, L. stenocephala, Senecio scandens, Senecio integrifolius. Senecio nemorensis, Echinops Grijisii, Saussurea japonica, Hemistepta lyrata, Cirsium chinense, C. japonicum, Leibnitzia Anandria, Ainsliaea reflexa, A. fragrans, Xanthium strumarium, Picris hieracioides, Taraxacum formosanum, Ixeris repens, I. japonica, I. polycephala, I. laevigata, I. chienesis, Lactuca sororia, L. indica, L. formosana, Youngia japonica, Sonchus oleraceus, S. arvensis. - 96 species.
