i 4 o SNAPDRAGON ORDER 



or none, stigma 2-lobed, fruit a capsule ; flowers solitary or in racemes on 

 naked stems, flower stalks with small bracts ; leaves basal and tufted, or 

 borne on floating branching stems, or reduced to minute scales ; aquatic or 

 on moist ground. 



Utricularia Linne 1753 Bladderwort 



(Lat. utriculus, bladder, from the leaf bladders) 



PL 22, fig. 5. 



Sepals 2, united, petals 5, purple or yellow, united into a 2-lipped 

 corolla, upper lip erect and entire, lower lip larger, 3-lobed, spurred at the 

 base, stamens 2 on the corolla, ovary 1 -celled, fruit a capsule; flowers in 

 racemes or solitary at the summits of slender leafless stems, the flower- 

 stalks with 2 little bracts ; leaves finely divided ; herbs floating in the water 

 or rooting in the mud, the floating species with stems bearing finely divided 

 leaves and covered with minute bladders. 



1. Corolla 12-15 mm. wide; leaf-bladders 4-5 mm. U. vulgaris 



2. Corolla 4-6 mm. wide ; leaf-bladders 1-2 mm. U. minor 



OROBANCHACEAE BROOM-RAPE FAMILY 



Sepals 4-5, united, petals 5, united into a more or less 2-lipped corolla, 

 the tube cylindric or expanded above, stamens 4 in pairs, on the tube of the 

 corolla and alternate with its lobes, a fifth rudimentary one occasionally 

 present, ovary 1 -celled, style slender, stigma disk-like, 2-lobed or sometimes 

 4-lobed, capsule 1-celled, 2-valved ; flowers in terminal spikes, or solitary in 

 the axils of the scales; erect brown, yellowish, purplish or nearly white 

 root-parasites with leaves reduced to alternate appressed scales. * 



1. Flower-stalk or calyx with 1 or more bracts; 



flowers nearly sessile in spikes Orobanche 



2. Flower-stalk and calyx without bracts ; flowers 



solitary on long stalks Thalesia • 



Orobanche Linne 1753 Broom-rape 

 (Gr. orobos, vetch, anchonc, strangler, from its parasitic habit) 



Sepals 2-5, united into a calyx split both above and below nearly or 

 quite to the base, the divisions 2-cleft or rarely entire, or 2-5-toothed, petals 

 5, reddish, yellowish, violet or nearly white, united into a 2-lipped corolla, 

 upper lip erect, notched or 2-lobed, lower lip spreading, 3-lobed. stamens 4 

 in pairs on the tube of the corolla, included, ovary with 1 cavity, style 

 slender, commonly persistent until after the splitting of the capsule, stigma 

 shield- or funnel-shaped, entire or 2-lobed ; flowers in spikes or racemes ; 

 leaves reduced to scattered scales the color of the flowers ; root parasites. 



