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174

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174

344. P. laxiiisciila (Blytt) Lge. Fl. Dan. tab. 2946. P. aspera
var. laxiuscula Blytt Norg. Fl. I, p. 122, P. conferta(?) /3,
pur-purea Blytt 1. c. p. 124(?).

Inter P. glaiicam Vahl et P. laxam Haenk. fere medium
locum tenet; a priore differt culmis brevioribus et
graciliori-bns, minus strictis, laevissimis, vaginis laxioribus, colore vix
glauco, ligula protracta, obtusa, leviter lacera, ramis panicnlae
racemiformis brevissimis, laevibus, spiculis basi rotundatis,
palea inf. obsoletins 3—5-nervia; a posteriore distinguitur
foliis angustioribus, complicatis, rigidiusculis, ligula obtusa
(nec aeuta), palea inf. ad nervos sericeo-pilosa et basi longius
lanata; colore spicularum atroptirpureo. Cum vero P. laxa aut
in Groenlandia omnino desit aut ibi saltem rarissime occurrat,
non suspicari licet, nostram esse prolem hybridam, et cum
dilferentiae a P. glauca nimis graves sint, ut pro varietate
hujus habeatur, specifice distinguenda videtur. In Norvegiae
alpibus quoque occnrrit, nam speeimina omnino similia a
Bly tti o nomine P. Balfourii designata habeo (sed a P. Balfourii
Pam., see. descriptionem et speeimina authentica a cl.
Ba-b ing ton communicata valde differre videtur); et in Fries
herb. norm. exstat planta e Norvegia «P. aspera in P. laxam
transiens» designata, quam Blytt ad P. asperam laxiusculam
retulit. Denique P. eonfertam ß, purpuream Blytt ex specim.
auth. a nostra discernere nequeo, dum vero P. conferta
genuina Blyttii magis remota videtur.

Det eneste grønlandske Exemplar, jeg har set, er fundet ved
Holstensborg (Th. Fr.) !

Geogr. Udbr. Gronland, Norge.

Obs. P. laxam Hank. nec a Valilio, nec ab ullo alio in Groenlandia
lectam vidi. Indicatur quidem ex ins. Disco (Walker, see. J. D. Hook. in
Proceed. Linn. Soc. 1861, p. 85), sed cum speeimina non viderim, nescio,
an forte planta ibi lecta ad P. laxiusculam referenda sit.

346. P. uemoralis L. var. I) glaiicaiitha Blytt Norg. Fl. 1,
p. 118! P. nemoralis var. glauca Hink I. c. p. 115!

Glaucescens, 1 — IV2 pedalis; foliis pianis, scabriusculis,

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