120 Morten P. PoRSILD. 
“Der kleine Rosmarin; wächst an der Südseite der Berge, wo es 
trocken ist, und nimmt keine andere Pflanzen unter sich auf. Fängt 
Mitte Juny an zu treiben und blüht von Mitte July bis Ende August.” 
About L. latifolium Ait. (Г. groenlandicum Retz.) he says: 
“Der grosse Rosmarin. Blüht Mitte August.” 
In the discussion of the two forms MEYER mentions the broad- 
leaved varieties of L. palustre occurring in Europe (the var. dilatatum 
of WAHLENBERG) “In eadem radice haud raro conjuneta”. He doubts 
the constancy of the length and the number of the stamens of latifolium, 
but nevertheless he considers this plant a valid species, without trans- 
itions to decumbens, and besides the differences given by HERZBERG, 
MEYER, adds: 
L. latifolium L. palustre decumbens 
stylus: leviter flexus omnino rectus 
puncta auronitentia т 
bracleis: copIiosissima rarıssima 
gemmae bractearum: obtusissimae et fere multo tenuiores ma- 
semiglobosae oisque attenuatae 
During his 8 years of indefatigable investigations of the flora of 
Greenland Jens Vann made clear the main points concerning the Green- 
land Ledum forms and their distribution. In his labels he determined 
them respectively 1) L. groenlandıcum and 2) L. palustre В decumbens. 
As to the occurring of the European form he. demonstrates his doubt 
by labelling the plants “Л. palustre L.?” “ad a accedens””, or the like. 
In his “Consvectus Florae Groenlandicae’” 1880 Jon. LANGE enu- 
merates : 
Il, OGUBSUREG 1\i 
a. vulgare. Erectum, parum ramosum, folits lanceolato-linearibus. 
3. decumbens Att. Trunco humilt, subdepresso, saepius crebre 
ramoso, foliis anguste linearibus, gemmis florigeris ovoideis. 
L. groenlandicum Orv. Folia elliptica-ovalia, basi subcordata, 
pagina superiore dense rugoso-areolata, gemmae florigerae globosae. Flores 
saepe pentandri (teste HOOKER). 
LANGE states a to be rare in Greenland. Further he doubts the 
specific rank of L. groenlandicum, having seen specimens that accor- 
ding to the form of the leaves might as well be determined as belong- 
ing to one or another of the species. Previous to the statement of 
LANGE, Hooker had stated the same opinion in his “Flora Boreali- 
Americana” 1840. in which II. p. 44 for the same reasons he reduced 
latifollum to a variety of palustre. And when ROSENVINGE in 1892 
