Vol. III.] FIGWORT FAMILY. 181 



i. Orthocarpus luteus Nutt. Yellow 

 Orthocarpus. (Fig. 3323.) 

 Orlhocarpus luteus\$ixM.. Gen. 2:"^j. 1818. 



Annual, rough-pubescent" or puberulent; stem strict, 

 erect, branched above, or simple, 6 / -iS / high, densely 

 leafy. Leaves erect or ascending, linear or lanceolate, 

 entire, or sometimes 3-cleft, i / -i}4 / long, i // 2 // wide, 

 sessile, long-acuminate; bracts of the dense spike lan- 

 ceolate, broader and shorter than the leaves, entire or 

 3-cleft, acute, green, mostly longer than the flowers; 

 flowers bright yellow, 4 // ~5 // long; calyx-teeth acute, 

 shorter than the tube; corolla about twice as long as 

 the calyx, puberulent without, its upper lip ovate, ob- 

 tuse, about as long as the saccate 3-toothed lower 

 one; capsule about as long as the calyx tube. 



On dry plains and prairies, Manitoba to Minnesota and 

 Nebraska, west to British Columbia and California. July- 

 Sept. 



28. SCHWALBEA L-. Sp. PI. 606. 1753. 



A perennial erect finely pubescent and minutely glandular, simple or sparingly branched, 

 leafy herb, with sessile entire 3-nerved leaves, and rather large yellowish-purple flowers in a 

 terminal bracted spike. Calyx tubular, somewhat oblique, 10-12-ribbed, 2 bracteolate at the 

 base, 5 -toothed, the upper tooth much the smallest, the 2 lower ones partly connate; corolla 

 very irregular, the tube cyliudric, the limb 2-lipped; upper lip arched, concave, entire; lower 

 lip somewhat shorter, 3-lobed, 2-plaited. Stamens 4, didynamous, ascending within the upper 

 lip of the corolla; anther sacs equal. Style filiform. Capsule oblong, many-seeded. Seeds 

 linear, with a loose reticulated testa. [Named for C. G. Schwalbe, of Holland, who wrote 

 ("1719) on Farther India.] 



A rnonotypic genus of eastern North America. 



Schwalbea Americana L. 



seed. (Fig. 3324.) 



Chaff- 



Schwalbea Americana L. Sp. PI. 606. 1753. 



Stem slender, strict, i-2 high. Leaves ob- 

 long or ovate-oblong, entire, acute at both ends, 

 i / -i^ / l n g. 2 // -8 // wide, the upper gradually 

 smaller and passing into the bracts of the rather 

 loose spike; flowers very nearly sessile, \'-i%' 

 long, longer than the bracts; bractlcts at the base 

 of the calyx linear, shorter than its tube; corolla- 

 tube slightly exceeding the lower lobes of the 

 calyx, these connate to near their apices; capsule 

 enclosed by the calyx. 



In wet sandy soil, eastern Massachusetts to 

 Florida and Louisiana, near the coast. May-July. 



29. EUPHRASIA I,. Sp. PI. 604. 1753. 



Annual or perennial low mostly branched herbs, parasitic on other plants, with opposite 

 dentate or incised leaves, and small blue yellow or white flowers in terminal leafy-bracted 

 spikes. Calyx not bracteolate at the base, campanulate or tubular, 4-cleft (rarely 5-cleft 

 with one of the lobes much smaller than the others). Corolla very irregular, 2-lipped, the 

 upper lip erect, scarcely concave, 2-lobed, its margins recurved; lower lip larger, 3-lobed, 

 spreading, its lobes either emarginate or obtuse. Stamens 4, didynamous, ascending under 

 the upper lip of the corolla; anther-sacs equal and parallel, mucronate at the base. Cap- 

 sule oblong, loculicidally dehiscent, many-seeded. Seeds oblong, longitudinally ribbed. 



[Greek, delight.] 

 > 



About no species, natives of temperate and cold regions of both the northern and southern 



hemispheres. Besides the following, another occurs in northwestern North America. 



