528 SCROPHULARIACEZ DIGITALIS 
CASTILLELA 
‘DIGITALIS L. sp. 621. (1753) 
Tall biennial or perennial herbs with alternate leaves-and large 
showy red, white or purple Howers in long terminal usually one- 
sided racemes. Calyx 5-parted, the segmentsimbricated Corolla 
declined, somewhat irregular, the tube contracted above the ovary, 
then rather abruptly expanded, longer than the 4- or 5-lohed 
slightly bilabiate limb: upper lip broadly emarginate or 2-cleft ; 
lower one 3-lobed, the middle lobe largest, the lateral ones exterior | 
in the bud. Stamens 4, didynamous, ascending, mostly included ; 
anthers approximate in pairs. Style slender, with 2-lobed stigma. 
Capsule ovoid, septicidally dehiscent. Seeds numerous, rugose. 
D. purpurEA L. Sp. 621. Pubescent: stems stout, 1-5 feet high: radi- 
cal and lower cauline leaves ovate or ovate-lanceolate, 6-10 inches long, 
slender-petioled, acute at the apex, narrowed at base, dentate: upper 
leaves’ similar but smaller, sessile: racemes a toot long or more, dense, 
one-sided : flowers various-colored, drooping: upper lobe of the calyx nar- 
rower than the 4 other foliaceous ones: corolla 1144-2 inches long, spotted 
within. Common in rich alluvial soil, especially along the coast, western 
Oregon to Brit. Columbia: Naturalized from Europe. 
Tribe vi Euphrasiew Benth. in DC. Prodr. x, 189. Corolla 
manifestly bilabiate: the wpper lip erect and. concave or galeate, entire 
or emarginate, rarely 2-cleft; the lower 3-lobed, mostly spreading, 
external in the bud. Stamens 4 and didynamous or rarely 2, a8- 
cending under the upper lip: anther-cells distinct, sometimes one 
abortive. or wanting. Style mostly filiform, with entire or 2-lobed. 
stigma. Oapsule loculicidally dehiscent. 
§ Anther-cells unequal or dissimilar, the outer one affixed by tts 
middle, the other pendulous from its upper end, mostly smaller, some- 
times sterile or deficient. Seeds with a loose reticulated coat. 
19 CASTILLEIA Mutis. L. f. Supp. 47. (1781) 
Herbs with alternate leaves and red, yellow, purple or white 
flowers in dense terminal leafy-bracted spikes, the bracts often 
brightly colored and much larger than the flowers. Calyx tubu- 
lar, laterally flattened, more or less cleft before or behind, or both, 
the lobes entire 2-cleft. Corolla tubular, very irregular, its tube 
not longer than the calyx, its limb bilabiate; upper lip (galea) 
arched, elongated, concave or keeled, laterally compressed. entire, 
enclosing the didynamous stamens: lower lip short, often very 
small, 8-toothed, 3-carinate or somewhat saccate below the short 
teeth. | 
* Annuals with fibrous roots: at least the upper part of the bracts 
and sometimes the calyx petaloid. 
C. minor Gray Bot. Cal. i, 573. Villous-pubescent: stem slender, 
strict, simple or with 1 or2 erect branches, 1-244 feet high: leaves all 
linear-lanceolate and entire, sessile, acuminate, 2-3 inches long: bracts 
similar to the leaves but smaller, red or red-tipped, very narrow, equalling 
or longer than the short-pédicelled flowers: calyx green, cleft on both 
sides to about the middle, the lobes lanceolate, acute, entire or 2-toothed : 
