BOTANY. 19 



sinubus laciniarum majorum calycis inserta iisque sesquilongiora. Stamina fauci calycis 

 inserta, indefinita, 30 plura. FUamenta subulata, gUn. jlnMrn? ovate, flavae, basi semi- 

 bifida, loculis parallelo-approximatis, longitudinaliter dehiscentibus. Pollen globosum, 

 simplex. Ovaria indefinite numerosa, receptaculo subcylindraceo imbricato inserta, breve 

 pedicellata, ab apice pedicellorum solubilia, hirsnta, pilis aeutis stnetis, monosperma, ovulo 

 adscendente. Styli terminal**, filiforn.es, subulati, gkbri, strict!. Stigmata dilatata, obliqua, 

 retusa, papulosa. 



Obs. This species is named in honour of Lieutenant James Ross, hi whose well-preserved 

 herbarium several plants were found not contained in tbe other collections. 



EXPLICATIO TAB. C. 



Sieveesta Rossii. 1, 2. Planta florida, magnit 1 e at i 1 Seq ?s auct*. 8 at 4, 

 flos antice et postice visus. 5. flos petalis et staminibus orbatus. (>. pelalum. 7. portio 

 calycis cum staminibus respondentibus ejusdeni basi insertis. 8, 9. stamen antice et postice 

 visum. 10. pollen 200-ies auctum. 11. pistillum. 12. id. longitudinaliter sectum. 13. 

 pistilla receptaculo insidentia. 14 receptaculum commune pistillorum cum poclieellis. 15. 

 achenium fere maturum. 10. id. longitudinaliter sectum. 17. id. transverse sectum. 

 18. semen. 19. embryo. 



33. Potentilla PCLCHEi.i.A, foliis pinnatis bijugis super villosis subter sericeis, foliolis 

 pinnatifidis pari inferior! minore: lobis omnium lanccolato-linearibus, caulibus paueifloria 

 (uniflorisve), stylo basi glanduloso-dilatata. 



Potentilla pulchella, Br. in Ross" voy. ed. 2. vol. 2. p. 193. 



Potentilla sericea ? Greville in Mem. Wcrn. soc. 3. p. 430. fide speciminis in herb, groen- 

 landico D. Jameson. 



Obs. P. sericea Linn, facile distinguitur fobis 3— 5-jugis, et lana elongata receptaculi, 

 quod in P. pulcliella pube brevi ovaria vix a?quante instructum. Nostra planta affinitate 

 propius accedit P. nivea", baud obstante hujus divisione ternata foliorum, qua; nunc, rarissime 

 quamvis, addito foholorum pari nano similiter pinnata evadunt. 



34. Potentilla nivea. Linn. sp. pi. ed. 2. p. 715. Rottb. in act. Hafn. 10. p. 451, 

 i. 7. n. 22. optima fig. var. a. Willden. sp. pi. 2. p. 1109. Pers. syn. 2. p. 56. 

 Wahlenb. lapp. p. 146. Nestler potent, p. 73. Lehman potent, p. 184. 



o. folia super villosiuscula viridia, subter niveo-tomentosa. 



fi. folia utrinque villosiu-c ula. pa»ini.-> concoloribus. 



Potentilla nivea /3. Wahlenb. lapp. p. 147. 



Potentilla Groenlandica, Br. in Ross' voy. ed. 2. vol. 2. p. 193. 



Potentilla frigida? Greville in Mem. Wern. soc. 3. p. 430. see exempl. in herbario 

 D. Jameson. 



Potentilla verna, Hooker in Scoresby's greenl. p. 413. 



