-^ 383 



Die europäischen Poa-Arten. * 



Von Victor V. Janka. 



1. Spicula solitaria culmum terminans vel spiculae paucissimae in 

 pedicellis brevibus strictis Cpedicellis spiculis ipsis brevioribus): 



Poa Balbisii Pari. 

 Spiculae nunierosiores in pedicellis longioribiis 2. 



2. Annua v. biennis; palea inferior obtusa et erosula: P. annua L. 



Perennes; palea inferior plus minus acutata integerrima. 3. 



3. Culnii et vaginae a basi ad apicem usque complanato-compressi 

 subancipites. 4. 



Culmi vaginiscum teretes vel quandoque basi compressiusculi, 

 sed nunquam ancipites. 7. 



4. Herbae robustae bipedales et ultra; folia late linearia sublance- 

 olato-linearia ; paniculae patentes v. diffasae, spiculae ovato- 

 lanceolatae, flosculi haud regulariter distichi; palea inferior acuta 

 V. subacuminata. 5. 



Humilior, gracilis; folia angustiora,panicula erectasubcontracta; 

 spiculae lanceolatae; flosculi subregulariter distichi: 



P. compressa L. 



5. Folia omnia vel salteni inferiora apice cucullato-constricta. 6. 



Folia omnia sensim attenuato-acutissima : P. hybrida Gaud. 



6. Paniculae rami basi brevi tractu nudi; spiculae ovali-oblongae: 



P. sudetica Presl. 

 Paniculae rami longissime nudi, apice tantum spiculigeri; spi- 

 culae lanceolato-ovatae: P. remota Fr. 



7. Folia latiuscule linearia, sublineari-lanceolata, plerumque brevia, 

 semper plana. 8. 



Folia anguste linearia, plana, plicata vel convoluta. 10. 



8. Paniculae rami sub-5 semiverticillati ; folia elongata culmum 

 subaequantia: P. Bivonae Pari. 



Paniculae rami subgemini; folia breviora. 9. 



9. Rhizoma breviter repens; folia sensim in mucronem attenuata: 



P. insular is Pari. 

 Rhizoma fibrosum caespitosum; folia abtusa abruple mucronata: 



P. alpina L. 



10. Glumae late ovales spiculas aequantes. 11. 



Glumae plus minus angustiores spiculis breviores. 12. 



11. Spiculae ovatae; folia anguste linearia: P. laxa Haenke. 



Spiculae lanceolatae; folia subsefacea. 



P. stenant/ia Irin. (P. subtilis Schur?) 



12. Paniculae rami typice subgemini, rarissime plures. 13. 



Paniculae rami subquini semiverticillati. 23. 



13. Rhizoma repens stoloniferum,stolones elongati; distiche foliati. 14. 



Rhizoma fibrosum caespitosum. 15. 



14. Paniculae ramilaeves; folia angustissima: P. arctica R. Er. 



Paniculae ramisrabriusculi v. scabri; folia latiora. P. cenisia All. 

 P. media S chur, P. psychropkila B. et H.) 



27 * 



