6 BUTTERCUP ORDER 



1. Fruiting spike bristly from the long-beaked 



achenes M. aristdtus 



2. Fruiting spike smooth, the achenes short-beaked M. minimus 



PULSATILLA Adanson 1753 PASOUE FLOWER 

 (Lat. diminutive of pulsatus, shaken, hence wind-flower) 



PL 3, fig. 5. 



Sepals 5-7, usually 6, petal-like, blue, purple or whitish, petals none, 

 stamens many, pistils many, fruits 1-seeded achenes, the styles long and 

 plumy in fruit ; flowers regular, single ; leaves 3-divided and cleft ; perennial. 



Flowers cup-shaped, then expanded ; fruiting styles 

 2.5-4 cm. long P. hirsutissima 



RANUNCULUS Linne 1753 BUTTERCUP, CROWFOOT 

 (Lat. rana, frog, -unculus, little, frorfi the amphibious habitat of some) 



PL 3, fig. 3, 6. 



Sepals 5, green or petal-like, petals regularly 5, yellow or white, rarely 

 red, with a nectary at the base, stamens many, pistils many, achenes com- 

 pressed, rarely cylindric, 1-seeded; flowers regular, single or somewhat 

 racemose; leaves various, simple and entire to lobed and dissected, or com- 

 pound ; annual or perennial. 



I. Petals yellow or yellowish ; land plants, rarely sub- 

 merged 

 1. Leaves simple, entire to divided or dissected 



a. Leaves entire, at most finely toothed R. fldmmula 



(1) Plants erect alismifolius 



(2) Plants creeping reptans 



b. Leaves, or at least some of them, coarsely 



toothed, lobed or divided 



(1) Achenes nerved lengthwise R. cymbaldria 



(2) Achenes not nerved lengthwise 



(a) Some of the leaves entire R. ellipticus 



(b) All the leaves lobed or cleft, or at least 



coarsely toothed 



x. Pedicels and sepals densely brown-hairy R. Macduleyi 



y. Pedicels and sepals not densely brown- 

 hairy 



