PRODROMUS MONOGRAPHLE GEORUM. 53 
32. GEUM TRIFLORUM Pursh, foliis radiealibus interrupte pinnatipartitis , 
laciniis lateralibus cuneatis, inciso-dentatis, pilosis; foliis caulinis duo- 
bus supra mediam partem caulis, pinnatifido-laciniatis; petalis oblongis 
purpureo-albis, calycem atro-purpureum campanulatum | subzeqantibus; 
carpellis pilosis; stylis continuis villosis. 
e 
nA 
2 
. G. triflorım Pursh Fl. Amer. sept. 2, p. 736. —- Poir. Eneyel. suppl. V, p. 574. — 
Dec! Prodr 2, p. 553. — Tor. et Gray El. of North Amer. I, p. 423. — A. 
Gray Man. of the North Unit. Stat., p. 152. 
G. ciliatum Pursh. Fl. Amer. sept. 1, p. 352. 
G. Grahami Steud. Nomencl. 
Sieversia triflora Spreng. Syst. veg. 2, p. 543. — Richs. Appx Frank. jour. ed. 
p- 21. — Curt Botan. Magaz. vol. 55, t. 2858 
Sieversia rosea Grah. New-Edinbg phil. journ. NIT, 193. 
m" 
Habit. in America septentrionali, ut in Louisiana superiore, ubi Bradbure de- 
texit, Wisconsin, Milwaukee (J. A. LAPHAM in herb. FRIES), Labrador, New-Found- 
land, Saskatehavan ete., Canada, White-Mountains of New-Hampshire, Watertown, 
New-York, Banks of Ohio, Illinois, Missouri and the vallies of the Rocky-Mountains 
(Torr. et Gray l.-e.) (v. v.). 
Puleherrima species, forsitan elegantissima omnium Georum, ab omnibus di- 
stinctissima, floribus G'ewm rivale in memoriam revocans. — Radix lignosa, subfusi- 
formis, complures radieulos emittens. Folia radiealia 5 vel 6 uncias longa, rosulata, 
laciniis basin versus decrescentibus; petioli dilatati, pilosi et suleati. Caulis simplex, 
triflorus, plerumque pedalis, teres, purpureus, pubescens, supra medium duo folia 
caulina vel bracteas duplo pinnatifidas, basi eonnatas gerens; umbella triflora termi- 
nalis. Flores suberecti, duo laterales bracteis duabus in medio pedunculo instrueti, 
flos vero centralis his caret. Calyx purpureus, erectus, campanulatus; laciniæ ovate, 
erectæ, bracteolæ angustiores, lanceolate, patentes. Petala oblonga alba, margine 
purpureo. Styli carpellorum longissimi villosi. Carpophorum conicum sessile, ut 
etiam in reliquis omnibus Sieversiis. 
Obs. 1. Quomodo TRATTINNICK hane plantam potuerit fingere affinem Geo 
montano, non video. 
Obs. 2. Geum triflorum et G. ciliatum Pursh esse unam eandemque speciem 
nersuasum habeo nee dubito @. ci/iatum afferre ut synonymon G. triflori, his præcipue 
nisus rationibus: 1) diaguosis Pursui usque ad singula verba transferri potest in G. 
trilorum; 2) G. ciliatum dicitur esse species elegantissima floribus Gei rivalis simi- 
libus; 3) A. Gray observat in Flora of North Amer., in Purshii herb. proprio G. cilia- 
tum non adesse atque in Purshii herbario canadensi hoc nomen adseriptum esse spe- 
eiminibus G. triflori! Quare Geum ciliatum, quod dicunt habitare ad ripas fluminis 
Kooskoosky, speciem jam diu dubiam delendam esse censeo. — Diagnosin G. ciliati 
videas in Dec. Prodr. et Pursh Fl. Amer. septentr. 
