PARSLEY FAMILY 231 



(b) Fruits 8-16 mm. long; leaves ternate, 



then pinnate 

 x. Fruit 10-12 mm. long; wings narrow, 



ribs inconspicuous L. bicolor 



y. Fruit 8-16 mm. long; wings more thaji 

 half as broad as carpel ; ribs thread- 

 like L. Grdyi 

 (2) Plant hairy, at least when young; fruits 

 usually hairy also 



(a) Leaves finely dissected, ternate then pin- 



nate L. foeniculdceum 



(b) Leaves 1-2-ternate L. platycdrpum 

 2. Flowers white 



a. Fruit oblong, 6-20 mm. long ; bracts of the in- 



volucel not papery-margined L. macrocdrpum 



b. Fruit oval to round, 4-6 mm. long; bracts of 



the involucel papery-margined L. nudicaule 



MUSINEUM Rafmesque 1820 



(A Greek name for fennel) 



PI. 35, fig. 17. 



Sepals 5, united and grown to the ovary, teeth prominent, petals 5, 

 yellow, stamens 5, ovary 2-celled, stylopodium low, fruit ovate to oblong, 

 somewhat flattened laterally, each carpel flattened dorsally with thin nar- 

 row ribs, oil-tubes usually 3 in the intervals, 2-4 on the commissure side ; 

 leaves ternate or pinnate, usually much dissected ; low or stemless perennial. 



1. Stems 6-10 in. high; leaf segments mostly oblong 



to ovate M. divaricdtum 



2. Plant stemless ; leaf segments narrowly linear M . tenuifolium 



OREOXIS Rafinesque 1830 



(Gr. or os } oreos, mountain, perhaps from the habitat) 

 PL 35, fig. 11. 



Sepals 5, united and grown to the ovary, teeth prominent, petals 5, 

 yellow, stamens 5, ovary 2-celled, stylopodium none, fruit globose, each 

 carpel with thick equal corky ribs, oil-tubes 1-3 in the intervals, 2 on the 

 commissure side; leaves pinnate; the leaflets cleft into narrow segments; 

 tufted alpine perennial. 



1. Plants smooth or nearly so; oil-tubes more than 1 



in the intervals 0. humilis 



2. Plants finely hairy ; oil-tubes 1 in the intervals 0. alpina 



