PHANEROGAMIC FLORA OF SPITZBERGEN. 165 
Ch. Martens, Treurenburg Bay (Hecla Cove), and Low Island, Parry. 
In answer to my inquiries, Blytt wrote to me that ** Holeus arcticus, 
Smflt., is certainly D, Fischeri, R. Br., for I have compared it with an 
authentic specimen from Melville Island, communicated to me by R. 
Brown himself." : 
83. Poa pratensis, var. alpigena, Fr. Hrb. Norm. ix. n. 93.— Rare, 
found only at Lomme Bay, King's Bay, and Ice Sound. The speci- 
mens are 10 inches high, and resemble in every respect the Scandi- 
navian alpigena, except that the top leaf of the stalk is broader and 
flatter. 
84. P. cenisia (All), Fre; Anders. Gr. Scand: p. 37.—This is the 
most common Poa. It is found both on the west and north coast, ex- 
tending along the mountain sides up to the snow-line. ~- Seven Island, 
Nordenskiöld. The principal forms of this variable species are—1. 
Poa arctica, R. Br.; Poa flexuosa, Blytt ; P. cenisia, var. depauperata, 
Fr. Hrb. Norm. iii. 93: Found in the north, and extending to the 
snow-line. 2. P. sa, Wbg.; P. cenisia flexuosa, Anders., Hrb. 
Norm. iii. 24; P. flexuosa elongata, Blytt. On rich soil, under the 
bird-cliffs, up to Brandywine Bay ; 1 ft. or more high. ~ 3- P. flexuosa 
eivipara.-- A luxuriant form of the last variety, with a greenish, com- 
pact, and often viviparous panicle. I have observed transition forms 
between all these; they belong doubtless to the same species. Poa 
gelida, Roemer, specimens of which from Horneman are in the Riks 
Museum, is a luxuriant form of P. flexuosa, Wbg., with rather larger 
spikelets. This form is found in Spitzbergen. 
85. P. stricta, Lindeb., Blytt; P. laza, var. vivipara, Anders. ; P. 
stricta prolifera, Fries, Herb. Norm. xv., 0. 94; P. alpina vivipara, 
Vahl, according to Vahl’s specimens from Magdalen Bay and Bellsund, 
in the Museum Kongl. Vet. Akad.; P. cesta (Sm.), J. D. Hook., and 
P. casia, var. vivipara, J. D. Hook., Proceed. Linn. Soc. vol. i. 1856, 
p- 118, according to specimens from Beechy Island; P. laza, Hook.— 
Much confusion exists regarding this extremely variable plaut. Smfit. 
and Vahl make a viviparous form with broad leaves Poa alpina vivi- 
para, and as erroneously refer the smaller viviparous form, with softer 
and narrower leaves, the most common in Spitzbergen, to P. lara, 
Hàünke, var. vivipara. Hooker has erroneously referred the Beechy 
Tsland plant, which is not always viviparous, to P. cesia, Sm. The 
‘specimens from Beechy Island are identical with those in Herb. Norm. 
