SCROPHULARIACEAE (fIGWORT FAMILy) 



457 



segments crenulate or incised: spike dense, 1-2 dm. long: calyx 5-tooth'edj 

 nearly equaling the corolla-tube: corolla red or purplej'galea deourved againbt 

 the lower lip and upwardly recurved beyond it:' capsule obUquely ovate. 

 (Elephantella groenlandica Rydb. Mem. N. Y. Bot. Gard. 1: 360. 1900.)—^ 

 In swamps and wet meadows; throughout northern America. 



15. CASTILLE JA * Mutis , 



Herbs, with alternate leaves and red, yellow, purple, or white flowers in 

 dense, terminal, leafy-bracted spikes, the bracts oftSn brightly colored and 

 much larger than the faowets. Calyx tubular, laterally flattened, more or 

 less cleft above or below, or both, the lobes edtirfe, or 2-cleft. Corolla iu- 

 bular, very irregular, the tube not longer than the'calyX, the liiab bilabiate; 

 upper Up (galea) arched, elongated, concave or keelpd, laterkliy compressed, 

 entire. mclosing_ the didynamous staineiis; lower lip sn6rt,"6ften very small, 

 3-tootned, 3 carinate or somewhat saccate pelow the sliort teeth. ' ' , 



Annual . . . . ', ■. . • ' • "' • • • 1. C, exilis.,' 

 FereziniaU. ' :< .',''■ 



Calyx less deeply cleft above than below. 

 OdrbUa lone (4-5 cm.). 



Galea as long as the tube of the corolla . . . . 2. C. linariaefolia. 



; Galea shorter than the <(ube of the corolla . . . .'' 3.;C. sessiliflora. 

 Corolla sliort (2-3 cm.). 



Inflorescence bright' red or scarlet ..... 4; C. collina. 



5. C. brachyanth^i 



6. Cflava, , , 



7. C. mjuoiata. 



8. C. chromosa 



9. C. Haydenii. 

 10. C. Buffumil. 

 Jl. C. Integra. 



■'I Inflorescence greenish or yellow. 



Lip, of iCoroUa half as long as the galea . ,. . 

 Lip of corolla very short . . . ,,, . 

 Calyx equally^ or subeguall^y cleft abbve and beloW. 



Infloresceniee conspicuously red, scarlet, or purple. 

 , Galea longer than the tube of (he corolla or the two subequal, 



, , I Leaves glabratie; galea exserted . . , • 



' ' Leaved pubesjieht; galea partly .exserted . 

 Galea shorter than the tube of the corolla. 

 Stems low.'mo^tly less than 3 dm. high. 

 Floral bracts laciniately 3-5-cleft. 



Leaves entire or pinnately lobed .... 

 Leaves mostly equidly 3-cleft . . . . 

 Floral bracts entire or nearly so ... . 

 Stems taller, 3-5 dm. or more. ■ , _, 



Calyx with 4 Subequal lobes . . . ' . . . 12. C. confusa, 

 ' Cidyx with 2 primary lobes which are more orless cleft, 

 Floral bracts bright purple .... 



Floral bracts bright scarlet. 

 Stems in clumps, froin a woody caudex . 

 Stems single, spreading by creeping rootstocks 

 Inflorescence pale, greenish, or yellow. 



Galea equaling the tube of the corolla, or nearly so 

 . ,Galea shorter tjhan,the tube of the corolla. 

 ' Galea short, or 'not more than twice as long as the lip. 



Calyx cleft into i subequal lobes .... 

 { ; Calyx 2-cleft, the lobes bidentate or cleft. 

 . Inflore^denbe more or less pilose. 

 • ••' 'Friinary"calyx-lobes merely bidentate . . 



; Fiiiiary 'calyx-lobes 2-cleft 



13. C. lauta. 



14. 

 15. 



C. rhexifolia. 

 C; lancifolia; 



16. C. dubia. 



17. C. loBgiepica^ 



18. 

 19. 

 20. 



C. pilifiera. 



C. iasciculatai>'> 



C. pall^scen^. 



'! 



, , .Inflorescence ,c\nereous-puberulent, not pilose , . 

 Galea more than twice as long as the lip. 



Corolla and calyx subequal .' . , . . ',' 2l. C^ lineata. 

 I, Corolla distinbtly; surpassing the calyx. ; i I i,- . 'h''' li'^uji, . ,■ , 



. Low (l-2,dni.) . . . . ,. .;,.,. ,1 . 22. C.,occidentalis., 

 Taller (3-5 dm.) , ... . . . . . 23. C. sulphurea. 



1. Castilleja exilis A. Nels. Proc. Biol. Soo. Wash. 17: 100. 1904. ViUoiiB- 



Eubescent; stem slender, strict, simple or with 1 or 2 erect branches, 3^7 dm; 

 igh: leaves all linear-lanceolate and entire, sessile, acuminate, 4-8 cm. long: 

 bracts similar to the leaves but smaller, red or red-tipped, vfery narrow, 

 equaling or longer than the short-pediceled flowers: calyx green, cldlt on both 

 sides to about the' middle, the lobes lanceolate, acute,' entire or 2-toothed: 

 corolla yellow, 12-20 mm. long, the upper lip much longer than the small 



, * For other closely allied species coming into the borders of our range, see Bull. Torr. 

 Bot. Club 34: 35-41. 1907, where Rydberg characterizes thirteen additional species. 



