804 OROBANCHACEAE 



1. T. sedi (Suksd.) Rydb. Peduncles 1-3, slender, 5-10 cm. long, yellow or 

 straw-colored; scales 1 cm. long or less, ovate, usually short-acuminate; calyx- 

 tube conic-campanulate, 2 mm. long, glandular-puberulent; lobes subulate from 

 a broad base, 4-5 mm. long, attenuate; corolla not strongly curved; lobes oblong, 

 acutish or obtuse. Aphyllon sedi Suksd. Parasitic on Sedum: Ore. Mont. 

 B.C. Submont. My-Je. 



2. T. minuta (Suksd.) Rydb. Peduncles 1-4, slender, 2-8 cm. long; scales 

 1 cm. long or less, acute; calyx-tube campanulate, 2 mm. long; lobes subulate, 

 from a broad base, 4 mm. long; corolla hairy inside on the yellow folds; lobes 

 broadly oval, rounded at the apex, not spreading. A. minutum Suksd. Para- 

 sitic on Lithophragma, etc.: Ore. Mont. B.C. Submont. Ap-Jl. 



3. T. purpurea Heller. Peduncles 1-3, stout, 8-15 cm. high; scales broadly 

 ovate, obtuse, glabrous; calyx-tube campanulate, 3-4 mm. long; lobes lance-subu- 

 late from a broad base, 6-8 mm. long; corolla-lobes obovate or semiorbicular, 

 rounded or retuse at the apex, the lower ones usually more or less spreading. 

 Parasitic on bushes: Ore. Mont. Wash. Submont. My-Jl. 



4. T. fasciculata (Nutt.) Britton. Stem 2-10 cm. long; pedicels 3-12, 2-8 cm. 

 long; scales brownish, ovate, obtuse; calyx-tube 3-4 mm. long, campanulate; 

 lobes triangular-lanceolate, acuminate, 3-4 mm. long; corolla 2-3 cm. long. 0. 

 fasciculata Nutt. A. fasciculatum A. Gray. Parasitic on Artemisia, other Com- 

 posites, Eriogonum, Phacelia, &c.: Sask. Ind. N.M. Calif. Yukon; Mex. 

 Plain Subalp. My-Au. 



5. T. lutea (Parry) Rydb. Stem 5-10 cm. long, rather slender; scales ovate, 

 acute, glandular-puberulent; pedicels 2-5 cm. long; calyx-tube broadly campanu- 

 late, 3 mm. long; lobes triangular or lance-triangular; corolla about 2 cm. long; 

 lobes elliptic. A. fasciculatum luteum A. Gray. Parasitic on grasses: Neb. 

 Wyo. Ariz. Plain. Ap-Jl. 



Family 120. MARTYNIACEAE. UNICORN-PLANT FAMILY. 



Annual or perennial herbs, with branching stem. Leaves opposite, 

 rarely alternate, with broad blades. Flowers perfect, irregular. Calyx 4- 

 or 5-lobed. Corolla gamopetalous, bilabiate; tube more or less curved; upper 

 lip 2-lobed, exterior in the bud; lower lip 3-lobed. Stamens 4, didynamous, 

 all anther-bearing, or the posterior two without anthers: filaments elongate. 

 Gynoecium of 2 united carpels; ovary 1-celled, with 2 parietal placentae; 

 style slender; stigmas 2. Fruit a beaked capsule. Seeds flattened; endo- 

 sperm wanting. 



1. MARTYNIA L. UNICORN-PLANT. 

 Characters of the family. 



1 . M . Lo uisiana M ill. A densely viscid annual ; stem with spreading branches, 

 2-9 dm. long; leaves petioled; blades suborbicular or rounded-ovate, 5-30 cm. 

 broad, sinuate, cordate at the base; calyx cleft on the lower side; corolla white 

 or pink, spotted with yellow and purple within; pod 8-15 cm. long, strongly 

 curved, separating into two elastically spreading valves; the beak longer than 

 the body. M. proboscidea Glox. Waste places and banks: Me. Ga. Tex. 

 Colo. Neb. 



Family 121. PLANTAGINACEAE. PLANTAIN FAMILY. 



Annual or perennial herbs. Leaves basal or alternate. Flowers per- 

 fect, monoecious, or dioecious, bracteate. Sepals 4, persistent, often scarious- 

 margined, slightly united. Corolla campanulate or tubular, with 4, erect or 

 spreading lobes, scarious, nerveless, persistent. Pistil solitary; ovary super- 

 ior, 1-4-celled; stigma single, filiform. Stamens 2 or 4; filaments adnate to 



