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 nympheoides, Vent.) ; 
ponds and slow streams, very rare; reported from Bale. 
Order LVI.—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. ceruleum, ., Jacob’s Ladder; flowers large, 7-1 
in., drooping, violet or white, leaves of a large number of 
lanceolate leaflets; bushy places, rare; Bale, Bern, Jura, 
Tirol, Carniola, Pyrenees. 
Order LVII.—CONVOLVULACE:. 
Flowers regular; sepals, petals, and stamens 5 each; 
filaments often unequal and dilated at the base; ovary 
2-A4-celled, ovules few in each cell; seed-vessel a I-4- 
celled capsule; leaves, when present, large and simple. 
A large order of twining or climbing, or of leafless para- 
