芬斯,色譜儀,發表於1895年。 插畫檔

Ferns: 1) Adders-tongue fern (Ophioglossum vulgatum, or Ophioglossum vulgare), a-detail of an ear of wheat, enlarged; 2) Floating fern (Salvinia natans), a+b-sporangium; 3) Pillwort (Pilularia globulifera); 4) Four leaf clover (Marsilea quadrifolia), a-puffy fruit; 5) Japanese sago palm (Cycas revoluta, or Cycas circinalis), b-carpel, c-female cone. Chromolithograph, published in 1895.