a prominent incurved 2-horned beak; exocarp fleshy, separating in age from 

 the woody reticulate-sculptured or spinose endocarp; seeds 4 or many, the testa 

 corky-tuberculate or membranous-reticulate; endosperm none; embryo straight; 

 cotyledons large and fleshy. 



About 20 species in 5 genera, native to the Western Hemisphere. 



1. Proboscidea Schmid. Unicorn-plant. Devil's Claw. Cinco 



Llagas 



About 12 species, most of which are confined to North America. 



1. Proboscidea louisianica (Mill.) Thell. Unicorn-plant, common devil's claw, 

 ram's horn. 



Coarse viscid-pubescent annual with prostrate or ascending opposite branches 

 to 1 m. long; leaves opposite or the upper ones subalternate, with densely short- 

 pubescent petioles to 2 dm. long and 5 mm. thick, orbicular-reniform to broadly 

 ovate, cordate at base, with entire or sinuate margins, to 3 dm. wide and slightly 

 shorter; flowers 8 to 20 in an open raceme; pedicels 2-3 cm. long in anthesis, 

 45 mm. in fruit; pedicel bracts linear, 5-10 mm. long; calyx bracts oblong-falcate 

 to ovate, 1 cm. long or less; calyx to 2 cm. long, the 5 lobes acutish to obtuse, one 

 half the length of the calyx, thick and green or somewhat membranous and 

 yellowish; corolla to 55 mm. long and nearly as wide, dull-white or somewhat 

 purplish or pinkish throughout, mottled or blotched with reddish-purple and yellow 

 or occasionally nearly clear reddish-violet, conspicuous reddish-purple spots ex- 

 tend internally the entire tube length, the cylindrical portion of the tube short (5 

 mm. or less), the remainder broadly campanulate, 15-25 mm. long, 15-17.5 mm. 

 wide at orifice, ventricose, the lobes 1.5-2 cm. long and 1.5-3 cm. wide; filaments 

 glabrous or sparsely villous or tomentose below their point of attachment, glandu- 

 lar on the arcuately curved portion; fruit body stout, to 1 dm. long, 3 cm. thick, 

 the horns one and one half to three times longer than the body. P. Jussieui 

 Schmid., Martynia louisianica Mill. 



In wet or dryish meadows, playa lakes, waste places and on stream banks, mostly 

 in cen. and n.e. Tex., Okla. (Waterfall) and N.M. (Chaves, Guadalupe and 

 Union cos.), June-Sept.; nat. to s. U.S. but spontaneous northw.; sometimes 

 cult, for its young pods which are made into pickles. 



Fam. 121. Lentibulariaceae Rich. Bladderwort Family 



Aquatic, amphibious or terrestrial annual or perennial plants, commonly 

 possessing traps and insectivorous or carnivorous; leaves alternate, cauline or in 

 a basal rosette, simple or dissected; flowers 1 to several on an erect scape; calyx 

 bilabiate, 2- or 5-lobed; corolla deeply bilabiate, the lower lip often 3-lobed, 

 spurred at base in front and with a conspicuous palate; stamens 2; ovary free, 

 1 -celled, the placentation free-central; capsule ovoid to globose, 2- or 4-valved, 

 often bursting irregularly; seeds minute. 



About 170 species in 4 genera that are worldwide in distribution. 

 1. Plants mostly aquatic, rarely amphibious or terrestrial; leaves filiform-dissected 

 and usually bladder-bearing; flowers yellow or purplish in U. pur- 

 purea; calyx 2-lobed 1. Utricularia 



1. Plants terrestrial in moist soil; leaves entire, in basal rosette, not bladder- 

 bearing; flowers whitish or pale-violet; calyx 5-lobed 



2. Pinguicula 



1510 



