36 Morten P. PorsiLp. 
leaves and provided with fine-branched and mycotrophic roots right 
up to the lowermost leaves. Only the tops of the branches are visible above 
the “soil”, they are hardly over 1 em. long, with very short internodes, 
bearing 6—10 leaves, and an inflorescence with 3—5 flowers. The leaves 
are 8—11 mm. long, 1—1.5 mm. 
broad, in rare cases shorter and 
broader. The pedicels are 10—15 
mm. long, the flowers overtop- 
ping the uppermost leaves. The 
plant when in flower is quite 
conspicuous, but without, it would 
easily be overlooked. Even in 
this dwarfish state, the inflore- 
scence 1s characteristic of the 
species, as is the waxy coat and 
Fig. 7. a. A. polifolia from West Greenland, the total absence of hair on the 
68°47’ N., with young fruits, Aug. 22nd, 
1925 leg. Jouannes Larsen; b. A. glauco- lower surface of the leaf. Also in 
phylla from West Greenland, 61°22’ N., Europe dwarfed forms are men- 
Aug. 2nd, 1925, leg. J. Eucenıus. tioned from extreme localities, 
f. inst., var. acerosa Hartm., but 
they are probably forms of no taxonomic value. 
_ As already stated the Greenland specimens of A. glaucophylla Link 
are likewise, dwarfish, even more than its calciphile variety, iodandra 
Fern. (Rhodora 1916, 
100). The tips of the 
branches overtopping 
the moss or the soil 
are from 1.5—3.5 cm. 
long, bearing from 
8—25 leaves on short- 
ened internodes. The 
mature leaves are 10 
—18 mm. long and are 
very involute; in most 
cases the  involute 
parts of the blade are 
closely pressed to the midrib. Therefore it is often difficult to see the 
hairs on the lower surface, as there are none on the whitish midrib. 
The hairs (fig. 8) are short, one-celled, hyaline, and divergent, forming 
a very fine and close, but thin, tomentum. They are barely visible under 
a strong lens, but easily seen in sections under the microscope. The 
hairs alone are sufficient for discerning the species. But in the dwar- 
fish state, too, the inflorescence is quite characteristie with its short 
Fig. 8. Sections of the leaves of A. glaucophylla, 
showing the hairs on the lower surface; a. typical 
form from Newfoundland; b. from West Greenland. 
