420 



OROBANCHACEJE. 



1. UTRICULARIA L. Bladderwokt. 

 Leaves capillary divided and bearing little bladders which possess a 

 kind of valve-like opening. Scapes 1 to few-flowered. Calyx-lips 

 entire. Corolla with a projecting palate on the lower lip, often clos- 

 ing the throat; upper lip erect. (Latin utriculus, a little skin or 

 leathern bottle.) 



1. U. vulgaris L. Common Bladderwort. Immersed stems 

 1 ft. long or more, crowded with bi- or tri-pinnately parted leaves 

 bearing many bladders; scapes 5 to 12-flowered; pedicels recurved in 

 fruit; corolla 6 to 9 lines broad, with conical spur somewhat shorter 

 than the lower lip. 



Olema. Mrs. K. Brandegee; Suisun Marshes (?); Lower San 

 Joaquin, Mrs. K. Brandegee. The bladders have an entrance closed 

 by a valve opening inwards, so that small aquatic animals having 

 entered are unable to escape. 



89. OROBANCHACE/E. Broom-rape Family. 



Boot-parasitic herbs, destitute of .green color, with alternate scales 

 in place of leaves. Calyx persistent. Corolla tubular, more or less 

 bilabiate, the upper lip 2-lobed or entire, the lower 3-lobed. Stamens 

 4. didynamous, inserted on the tube of the corolla. Ovary free, 

 1-celled, pointed with a long style which is curved at the apex. 

 Capsule ovoid, 2 to 4-valved. each valve bearing on its face 1 or 2 

 placentae Seeds numerous, very small, with endosperm; embryo 

 minute. 



Calyx 5-cleft; anther-cells separated from below upward, mucronate at 

 base; capsule 2-valved 1. Aphyllon. 



Calyx truncate behind and before, or with 1 to 4 teeth in front; anther- 

 cells parallel, blunt; capsule 4-valved 2. Boschniakia. 



1. APHYLLON Mitch. Broom-rape. 

 Low commonly viscid-pubescent plants, with violet-purple or 

 yellow flowers. Calyx 5-cleft into acute or acuminate lobes. Corolla 

 tubular, curved, obscurely or manifestly bilabiate; upper lip erect or 

 arching inwards, in ours 2-lobed; lower lip 3-lobed, spreading. Sta- 

 mens included. Style deciduous; stigma peltate or with anterior and 

 posterior lobes. Placenta 1 4, 2 on each valve of the capsule. (Greek 

 prefix a. without, and phullon, leaf.) 



Flowers on long slender peduncles from a short more or less subterranean 

 eaudex, without bractlets; corolla obscurely bilabiate; placentae not 

 closely approximate in pairs. 

 Peduncles few or one; corolla bluish or purplish; calyx-lobes subulate . . 



1. .4. unijiorum. 



Peduncles many; corolla commonly yellow; calyx-lobes broader 



2. A. fasciculatum. 



Flowers in a raceme, or subspicate, or thyrsoid; flowers with 2 bractlets; 

 corolla manifestly bilabiate; placentae in contiguous pairs. 

 Herbage light colored or somewhat purplish; flowers pedicellate; calyx 

 equally cleft. 



Calyx-lobes nearly as long as tube of corolla 3. A. comosum. 



Calyx-lobes scarcely half as long as corolla 4. A. Californieum. 



