586 LENTIBITLARIEiE. Utricularia. 



Order LXX. LENTIBULARIE^H. 



Aquatic or marsh herbs, with bilabiate calyx and corolla, the latter personate and 

 spurred or saccate on the lower side, only 2 stamens, their anthers confluently 

 1-celled, and the free ovary 1-celled, with a free central placenta. Ovules numerous, 

 anatropous. Capsule many-seeded, bursting irregularly. Seeds destitute of albu- 

 men : the embryo thick, almost entire, a mere notch for the cotyledons. Flowers 

 perfect, on a scape or scape-like peduncle. 



The principal genera are Pinguecula or Butterwort, inhabiting wet rocks, one species in Oregon, 

 and the rather large genus, — 



1. UTRICULARIA, Linn. Bladderwort. 



Calyx persistent, its lips entire. Corolla with very short tube and ample lips ; 

 the lower larger, 3-lobed, bearing a prominent and usually bearded palate, decid- 

 uous. Stamens borne in the base of the corolla, connivent : anthers approximate. 

 Style short : stigma 1 - 2-hpped. — The commoner species are immersed in still or 

 slow-flowing water, have branching stems, and capillary dissected leaves, and on 

 some of them bladders with a valvular opening, in which minute aquatic animals 

 are caught and retained. 



A genus of numerous species, widely distributed over the world, several in the Atlantic United 

 States, but only the following known in California, both ranging round the world. 



1 . IT. vulgaris, Linn. Stems 1 to 3 feet long, swimming free under water, beset 

 with twice or thrice pinnately-parted capillary leaves bearing many bladders : 

 peduncles rising out of the water 6 to 12 inches high : flowers 5 to 12 in a raceme, 

 (| inch broad) ; the conical curved spur rather shorter than the lower lip of the 

 corolla : pedicels nodding after flowering. 



Lakes and pools, in the Sierra Nevada and in the northwestern counties ; the var. Americana, 

 Gray, having a narrower and less blunt spur than in the European plant. 



2. U. minor, Linn. Stems a few inches long, slender, swimming free, branch- 

 ing, beset with short and 2 to 4 times forked leaves having linear-filiform divisions : 

 peduncle slender, rising out of the water, and bearing 3 to 8 flowers in a raceme : 

 corolla 3 lines long, with very short and blunt spur or sac : pedicels nodding after 

 flowering. 



Big Spring in Indian Valley, Lemmon. Collected by Watson in Nevada and Utah, but only 

 sterile. 



Order LXXI. BIGNONIACE.E3. 



"Woody plants, erect or climbing, with more or less bilabiate corolla, didynamous 

 ■or by abortion diandrous stamens, a free ovary with two parietal placentae but very 

 commonly 2-celled by a false partition, and numerous seeds with a flat embryo and 

 no albumen. Leaves various, but commonly opposite. Flowers usually large and 

 showy, perfect. Corolla 5-lobed, imbricated in the bud, the three lobes of the 

 lower lip covering the others. Stamens borne on the tube of the corolla alternate 

 with the lobes ; the anterior pair always fertile and rudiments of the 3 others 

 present, or 4 fertile, the uppermost rudimentary or wanting : anthers 2-celled. A 

 fleshy annular disk around the base of the ovary. Style single : stigma of 2 broad 

 lips. Ovules anatropous or amphitropous. Fruit mostly a capsule, opening by 2 



