BOTANY. 
cclxxvii 
sinubus laciniarum majorum calycis inserta iisque sesquilongiora. Stamina fauci calycis 
inserta, indefinita, 30 plura. Filamenta subulata, glabra. Anthera ovata?, flavae, basi semi- 
bifidae, loculis parallelo-approximatis, longitudinaliter dehiscentibus. Pollen globosum, 
simplex. Ovaria indefinite numerosa, receptaculo subcylindraceo imbricato inserta, breve 
pedicellata, ab apice pedicellorum solubilia, hirsuta, pilis acutis strictis, monosperma, ovulo 
adscendente. Styli terminales, filiformes, subulati, glabri, stricti. Stigmata dilatata, obliqua, 
retusa, papulosa. 
Obs. This species is named in honour of Lieutenant James Ross, in whose well-preserved 
herbarium several plants were found not contained in the other collections. 
EXPLICATIQ TAB. C. 
Sieversia Rossn. 1, 2. Planta florida, magnitudine naturali. Sequentes auctse. 3 et 4, 
flos antice et postice visus. 5. flos petalis et staminibus orbatus. 6. petalum. 7. portio 
calycis cum staminibus respondentibus ejusdem 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 pedicellis. 15. 
achenium fere maturum. 16. id. longitudinaliter sectum. 17. id. transverse sectum. 
18. semen. 19. embryo. 
33. Potentilla pulchella, foliis pinnatis bijugis super villosis subter sericeis, foliolis 
pinnatifidis pari inferiori minore : lobis omnium lanceolato-linearibus, caulibus paucifloris 
(uniflorisve), stylo basi glanduloso-dilatata. 
Potentilla pulchella, Br. in Ross' voy. ed. 2. vol. 2. p. 193. 
Potentilla sericea? Grevillein Mem. Wern. soc. 3. p. 430. fide speciminis in herb, groen- 
landico D. Jameson. 
Obs. P. sericea Linn, facile distinguitur foliis 3 — 5-jugis, et lana elongata receptaculi, 
quod in P. pulchella pube brevi ovaria vix mquante instructum. Nostra planta affinitate 
propius accedit P. nivese, haud obstante hujus divisione ternata foliorum, quae nunc, rarissime 
quamvis, addito foliolorum pari nano similiter pinnata evadunt. 
34. Potentilla nivea. Linn. sp. pA. ed. 2. p. 715. Rottb. in act. Hafn. 10. p. 451, 
t. 7. n. 22. optima fig. var. a. Willden. sp. pi. 2. p. 1109. Pers. syn. 2. p. 56. 
Wahlenb. lapp.p. 146. Nestle r potent, p. 73. Lehman potent, p. 184. 
a. folia super villosiuscula viridia, subter niveo-tomentosa. 
/3. folia 'utrinque villosiuscula, paginis 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. 
2 m 2 
