18 SCANDINAVIANS AND 
Tolf nya slag af Urtice-slaktet fran Vestindien, 1787. 
Beskrifning pA nio nasslor (Urtica), hvilka nyligen p& Jamaica blifvit upp- 
tackta och beskrifna af O. Swartz, 1787. 
Nova Genera et Species Plantarum, etc., 1788. 
Cinchona augustifolia, en okand vaxt fran Vastindien, 1788. 
Solandra, ett nytt slikte fran Vastindien, 1788. 
Quassia excelsa,en ny vixt fran Vastindien, 1788. 
Stylanthus, ett nytt Srtsliikte, 1788. 
Observationes botanice quibus plante Indie occidentalis, 1791. ; 
Icones plantarum incognitarum quas in India occidentale delexit atque deli- 
neavit, 1794. 
Flora Indi occidentalis aucta atque illustrata, etc., 1797—1806. 
Synopsis Filieum, 1806. 
Lichenes Americani, 1811. 
Flora Bartholomensis et Guadaloupensis. 1825 & 1827. 
5. JUSSIEUAN PERIOD, 1789—1819. 
This period begins with the publication of the Genera Plantarum secundum 
this period. Even if the Jussieuan system of classification did not leave deeper 
marks on the period which bears its name, it is evident that a new era began @ 
this time, a very active one, especially in systematic botany, with such systemat- 
ists as Willdenow, Aiton, Salisbury, Persoon, Sprengel, and Robert Brown, the 
latter, however, belonging just as much to the next period. 
fore this time nothing had been published that exclusively treated on North 
America except Walter’s “Flora Caroliniana’’, which appeared the year before 
Jussieu’s ““Genera’’- During this period were published all the older floras of this 
country, viz., those of Michaux, Pursh, Barton, and Bigelow, and Nuttall’s “Gen- 
era’’. Elliott’s work was published a few years after the beginning of the next. 
H. Muhlenberg and C. C. Robin belonged to this time. Lewis and Clark made 
their famous expedition across the continent, A. Poiteau, John Lunan, and G. 
Richard de Tussac explored the West Indies, David Cranz, a Moravian missi0- 
nary, collected in Greenland, and another one of the same creed, Kolmeister, in 
dor. 
The following Scandinavians partook in the work; none of them, however, 
contributed anything important to the k vledge of the flora of the continent. 
Their work was mostly limited to the West Indies. 
A. West Indies. 
: John Ryan was a planter on St. Croix. When and where he 
was born and when he died, I have not been able to ascertain, but 
