MIMULUS SCROPHULARIACE^ 523 



GBATIOLA 



long, entire or sparingly toothed toward the apex, glabrous below, pilose 

 above with long white jointed hairs: peduncles filiform, erect, 1-2 inches 

 long, usually only one to each plant : calyx tubular-campanulate, about 3 

 lines long, its triangular acute teeth nearly equal : corolla golden yellow, 

 3-4 lines long, its nearly equal lobes barely emarginate. In mountain 

 marshes, southern Oregon to California. 



M. pilosus Watson Bot. King 225. Iferpestis pilosa Benth. Pilose- 

 pubescent throughout with soft white hairs : stem terete, 3-12 inches high, 

 paniculately branched from the base : root annual : leaves lanceolate or 

 narrowly oblonar, sessile, entire, 1-3 inches long: peduncles slender, 1-2 

 inches long : calyx eampanulate, 5-cleft, the tube not prismatic nor angled, 

 almost nerveless, becoming enlarged in fruit, the 5 lobes almost subulate, 

 very acute, pomewhat unequal : corolla bright yellow, 3-4 lines long, rather 

 obscurely bilabiate, usually with a pair of brown spots on the 16wer lip: 

 capsule oblong-ovate, acute. On sandy bars along streams, Washington 

 to California and the Rocky Mountains. 



13 GRATIOLA L. Sp. 17. (1753.) 



Erect or diffuse herbs with opposite entire or dentate leaves, 

 and yellow or whitish flowers solitary in the axils of the upper 

 leaves. Calyx 5-parted, the segments narrow, slightly unequal. 

 Corolla irregular, with cylindric tube and more or less bilabiate 

 limb: upper lip entire, emarginate or 2-cleft; lower one 3-lobed. 

 Antheriferous stamens 2, the posterior pair, the anterior pair rep- 

 resented by rudiments or wanting : filaments filiform : anther-cells 

 distinct, transverse and separated by a broad connective, or par- 

 allel and contiguous. Style filiform, with dilated slightly 2-lobed 

 stigma. Capsule loculicidally and septicidally dehiscent, ovoid 

 or globose, 4-valved. Seeds numerous, longitudinally and trans- 

 versely striate. 



G. Yirginiana L. Sp. 17.. Puberulent and somewhat glandular, or 

 below glabrous : stem erect, at length widely branching from the base, 3-10 

 inches high, from an annual root : leaves commonly glabrous, oblong or 

 oblong-lanceolate, sessile, narrowed at both ends, denticulate, 1-2 inches 

 long : peduncles slender, glandular, shorter than or equalling the leaves, 

 2-bracteolate under the calyx; bractlets as long as the calyx or longer: 

 sepals lanceolate, acute, about 3 lines long : corolla 4-5 lines long, with 

 yellowish tube barely twice the length of the calyx, and whitish lobes; 

 the 2 upper emarginate: sterile filaments minute or none: anther-cells 

 transverse, separated by a broad connective : capsule ovate, about equalling 

 the calyx. In wet or muddy places, California to Brit. Columbia and 

 across the Continent. 



G. ebracteata Benth. DC. Prodr. x. 595. Nearly glabrous and ob- 

 scurely glandular : stem stout, 1-6 inches high, branching and flowering 

 from the base : leaves lanceolate, entire or sometimes sparingly and sharp- 

 ly denticulate, sessile by a rather broad base : peduncles slender, as long as 

 or shorter than the leaves, ebracteate: sepals foliaceous, lanceolate, at 

 length 4-6 lines long, equalling the yellowish corolla: capsule globose, 

 somewhat 4-angled, much shorter than the calyx. On the margin of pools, 

 California to Brit. Columbia. 



14 ILYSANTHES Raf. Ann. Nat. 14. (1820.) 



Glabrous annual or biennial herbs with opposite sessile leaves 

 and small purplish flowers solitary in the axils of the upper leaves. 

 Calyx 5-parted, the segments linear, not subtended by bractlets. 



