PRODROMUS MONOGRAPHLE GEORUM. 3 
GENERIS DETERMINATIO. 
GE U M Linn. 
Calyeis persistentis tubus turbinatus vel hemispheericus, apice quin- 
que-bracteolatus, rarissime nudus; laciniæ quinque, imbricate vel valvatæ. 
Petala quinque, orbicularia vel obovata, laciniis calycinis sæpissime majora. 
Stamina plurima, sæpissime confertim pluriseriata, filamentis liberis filiformi- 
bus. Discus tubum ovarii vestiens, levis vel radiatim costatus. Pistilla 
numerosa, carpophoro brevi vel elongato clavato inserta; stylus filiformis, 
rectus vel geniculatus, stigmate minuto; ovulum solitarium, adscendens. 
Carpella parva in calyce sessilia vel toro stipitata, sicca, stylo elongato 
filiformi vel longe subulato recto vel geniculatim inflexo, nudo vel longe 
piloso terminata. Semen erectum, testa membranacea; cotyledones oblongæ; 
radicula infera. — Herbs, rhizomate perenni, interdum stoloniferæ. Folia 
radicalia conferta, lyrato-vel impari — pinnatipartita vel pinnatisecta, laciniis 
alternis sæpe minoribus, terminali maxima; caulina pauca, sæpissime trifida 
vel bracteiformia. Stipulæ basi petioli vaginantis adnate. Flores in scapo 
vel caule solitarii vel seepius corymbosi, majusculi, ampli, albi, flavi vel rubri. 
Geum Linn. gen. plant. N:o 636. Benth. et Hook. gen. plant. I pars 
2 p. 619: 
Adamsia Fisch. 
Buchavea Reich. 
Calligeum Endl. 
Caryophyllastrum Ser. 
Caryophgllata Tournef., Lam., Ser. 
Laxmannia Fisch. 
Oreogeum Ser. 
Sieversia Willd. 
Stictogeum Ser. 
Stylipus Raf. Neog. (1825) ex Torr. et Gray flora of North Amer. 
p. 422. 
