66 THE FLORA OF THE ALPS 



7. LiMNANTHEMUM, Gmel. 



Flowers yellow, in umbels ; *calyx 5-toothed; corolla- 

 lobes and stamens 5-8; ovary i -celled; leaves cordate or 

 peltate, floating. Aquatic plants. 



L. peltatum^ Gmel. ( Villarsia nymphcsoides^ Vent.) ; 

 ponds and slow streams, very rare ; reported from Bale. 



Order LVL— POLEMONIACE^. 



Flowers in terminal dichotomous cymes; calyx-teeth, 

 corolla-lobes, and stamens 5 each; ovary 3-celled; stig- 

 mas 3; seed-vessel a many-seeded 3-celled capsule. A 

 small order, chiefly American, with very few European 

 species. 



I. POLEMONIUM, L. 



Leaves pinnate ; flowers in dense corymbose cymes. 



P. coenileuin^ L., Jacob's Ladder; flowers large, j-i 

 in., drooping, violet or white, leaves of a large number of 

 lanceolate leaflets ; bushy places, rare ; Bale, Bern, Jura, 

 Tirol, Carniola, Pyrenees. 



Order LVH.— CONVOLVULACE.E. 



Flowers regular ; sepals, petals, and stamens 5 each ; 

 filaments often unequal and dilated at the base ; ovary 

 2-4-celled, ovules few in each cell; seed-vessel a 1-4- 

 celled capsule; leaves, when present, large and simple. 

 A large order of twining or climbing, or of leafless para- 



