216 



SCROPHULARIACEAE. 



VOL. III. 



5. Castilleja sessiliflora Pursh. Downy 

 Painted-cup. Fig. 3837. 



Castilleja sessiliflora Pursh, Am. Sept. 738. 1814. 



Perennial, cinereous-puberulent all over; 

 stems stout, simple, or branched from near 

 the base, 6'-i5' high, densely leafy. Leaves 

 sessile, i'-2 f long, the lowest commonly linear, 

 obtuse and entire, the others laciniate into 

 narrow, entire or cleft segments ; bracts green, 

 similar to the upper leaves, shorter than the 

 sessile flowers ; calyx deeper cleft on the lower 

 side than on the upper, its lobes linear-lanceo- 

 late, acute ; corolla yellowish, i4' long, the 

 upper lip about twice as long as the lower, the 

 lobes of the latter linear; capsule oblong- 

 lanceolate, acute, 6"-8" long. 



On dry prairies, Illinois to Manitoba, Sas- 

 katchewan, Nebraska, Wyoming and Texas. May- 

 July. 



32. ORTHOCARPUS Nutt. Gen. 2 : 56. 1818. 



Annual or rarely perennial herbs, mostly with alternate leaves, and yellow white or pur- 

 plish flowers, in bracted usually dense spikes, the bracts sometimes brightly colored. Calyx 

 tubular or tubular-campanulate, 4-cleft, or sometimes split down both sides. Corolla very 

 irregular, the tube slender, the limb 2-lipped; upper lip little if any longer than the 3-lobed 

 i-3-saccate lower one. Stamens 4, didynamous, ascending under the upper lip ; anther-sacs 

 dissimilar, the outer one affixed by its middle, the inner pendulous from its upper end, com- 

 monly smaller. Style filiform; stigma entire. Capsule oblong, loculicidally dehiscent, many- 

 seeded. Seeds reticulated. [Greek, erect-fruit.] 



About 30 species, natives of America, mostly of the western United States, i or 2 Andean. 

 Type species : Orthocarpus luteus Nutt. 



i. Orthocarpus luteus Nutt. Yellow Ortho- 

 carpus. Fig. 3838. 



Orthocarpus luteus Nutt. Gen. 2: 57. 1818. 



Annual, rough-pubescent or puberulent; stem strict, 

 erect, branched above, or simple, 6'-i8' high, densely 

 leafy. Leaves erect or ascending, linear or lanceolate, 

 entire, or sometimes 3-cleft, l'-ii' long, i"-2" wide, 

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

 ceolate, broader and snorter than the leaves, entire or 

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

 flowers bright yellow, 4"-s" 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. 



33. SCHWALBEA [Gronov.] 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, io-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 cylindric, 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 monotypic genus of eastern North America. 



