BOTANY. 
cclxxvii 
slnubus laclniarvim majorum calycis inserta iisque sesquilongiora. Stamina fauci calycis 
inserta, indefinita, 80 plura. Filamenta subulata, glabra. Antherce. ovate, flavse, basi semi- 
bifidee, loculis parallelo-approximatis, longitudinaliter dehiscentibus. Pollen globosum, 
simplex. Ovaria indefinite niimerosa, receptaculo subcylindraceo imbricato inserta, breve 
pedicellata, ab apice pedicellorum solubilia, liirsuta, 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-presei*ved 
herbarium several plants were found not contained in the other collections. 
EXPLICATIO TAB. C. 
SiEVEUSiA Rossii. 1, 2. Planta florida, magnitudine naturali. Sequentes aucte. 3 et 4, 
flos antice et postice visus. 5. flos petalis et staminibus orbatus. 6. petalum. 7. portio 
calycis cum staminibus respondentlbus ejusdem basi ihsertis. 8, 9. stamen aritlce et postice 
visum. 10. poUen 200-ies auctum. 11. pistillum. 12. id. longitudinaliter sectum. 13. 
pistilla receptaculo insldentia. 14. receptaculum commune pistillorum cum pedicellis. lo. 
achenium fere maturum. 16. id. longitudinaliter sectum. 17. id. transverse sectum. 
18. semen. 19. embryo. ' ■ 
83. PoTE^^TiLLA PULCHELLA, foliis pinnatls bijugis super vlllosls subter sericels, follolls 
pinnatifidis pari inferior! mlnore : lobis omnium lanceolato-linearibus, caulibus pauclfloris 
(uniflorisve), stylo basi glanduloso-dilatata. 
PotentiUa pulchella, Br. in Ross' voy. ed. 2. vol. 2. p. 193. 
Potentilla sericea.^ Greville in 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 sequante instructum. Nostra planta affinitate 
propius accedit P. niveae, baud obstante hujus divisione ternata foliorum, quae nunc, rarissime 
quamvis, addito foholorum pari nano similiter plnnata evadunt. 
34. Potentilla nivea. Linn. sp. pi. ed. 2. p. 715. Rottb. in act. Hafn. 10. p. 451, 
t. 7. 71. 22. optima fig. var. a. Willden. sp. pi. 2. p. 1109. Pers. syn. 2. p. 56. 
JVahlenb. lapp.p. 146. Nestle?' potent, p. 73. Lehman potent, p. 184. 
a. folia super villosluscula viridia, subter niveo-tomentosa. 
folia utrinque villosluscula, 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. 430. see exempl. in herbario 
D. Jameson. 
Potentilla verna, Hooker in Scoresby’s greenl. p. 413. 
2 m 2 
