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188 CTTLOrvTS MELVILLIANA.

��ccixivj DICOTYLEDONES.

RANUNCULACE^.

1. Ranunculus nivalis, foliis radicalibus elongato- petiolatis dilatatis lobatis : lobis subovatis ; caulinis subsessi- libus palmatis, caule erecto subiinifloro, petalis obovatis integerrimis longioribus calyce hirsutissimo, stylis rectius- culis ovaria glabra gequantibus.

Ranunculus nivalis, WaJdenb.lapp. p.lhQ. ScJdecJdencL TCinnncid. sect. post. jo. 14.

/3. folia radicalia basi cuneata vix ad medium lobata, lobo medio semiovato basi latiore, petala orbiculato-obovata calyce hirsutissimo sesquilongiora.

Ranunculus nivalis /3. Waldenh. lapp. p. 157 (exclus. syn. Martens spitzb.)

Ranunculus sulphureus, Soland. in FJupps voij, p. 202, (fide speciminis unici biflori absque foliis radicalibus, in Herb. Banks). Be Cand. syst. nat. p. 274 (exclus. syn. Martens spitzb., Laxmanni, Willdenovii et Smithii). Br. sjjitzb. pil. in Bcoreshys arct. reg. 1, append, p. 75. {Ante, p. 181) Richardson in FranMin'sjoicrn. j). 742.

y. folia radicalia basi subcuneata v. transversa alte lobata, lobo medio cuneato-obovato basi angustiorc.

Obs. Varietas y, cujus exemplaria duo tantum a nobis visa proxime accedit a quae, in Insula Melville baud obser- vata, sequentibus notis distinguenda.

a. folia radicalia reniformia alte lobata, lobo medio cuneato- obovato basi angustiore.

Ranunculus nivalis, Be Cand.syst. nat. I, p. 273, exclus. cit. ad Siv. in act. hohn. 1789, j??. 47, quae R. pygmgeus, et syn. Martens spitzb. ad var. /3 pertinente.

A R. nivali differt R. frigidus Willden. foliis radicalibus minus alte incisis lobulis pluribus, petalis obcordatis venis anastomozantibus, quae in R. nivali distinctae, et statura paulo majore.

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