SCEOPHULARIACE^E. (FIGWOKT FAMILY.) 281 



7. GR ATI OLA, L. HEDGE HYSSOP. 



Soft-herbaceous and diffusely branching plants, from a creeping base, 

 growing in wet soil : pedicels solitary and axillary, with a pair of foliaceous 

 bractlets close to the calyx and equalling it. 



1. G. Virginiana, L. Viscid-puberulent or more pubescent, or below 

 nearly glabrous, divergently branched from the base, a span or less high : 

 leaves commoulv glabrous, oblong-lanceolate, acute, from entire to denticu- 

 late-serrate, mostly narrow at base : corolla 4 or 5 lines long, with yellowish 

 tube barely twice the length of the calyx ; lobes nearly white, the two upper 

 emarginate. Across the continent. 



8. LI MO SELL A, L. MUDWORT. 



Small, glabrous plants, with fibrous roots and a cluster of entire fleshy 

 leaves at the nodes of the stolons, and short scape-like naked pedicels from 

 the axils, bearing a small and white or purplish flower. 



1. L. aquatica, L. Tufts an inch or two high : clustered leaves longer 

 than the pedicels, when scattered on sterile shoots alternate, in the typical 

 form with a spatulate or oblong blade on a distinct petiole ; this in mud rather 

 short, in water elongating to the length of 2 to 5 inches. From Hudson's 

 Bay to S. Colorado, and westward to the Sierras. 



9. SYNTHYRIS, Benth. 



Leaves largely radical and petioled ; those of the simple stem or scape and 

 the bracts alternate : flowers small, purplish or flesh-color, in a simple spike 

 or raceme. In ours the flowers are in a dense spike terminating a stouter 

 leafy scape or stem. 



* Leaves laciniately cleft or divided, all radical: corolla cylindraceous, 1-deft to 



the middle. 



1. S. pinnatifida, Watson. Tomentulose-pubescent and glabrate : leaves 

 slender-petioled, from round-reniform to oblong in outline, from palmately to 

 pinnately 3 to 7-parted or below divided, and the divisions again laciniately 

 cleft or parted : scape sparingly bracteate, a span high : spike narrow : corolla 

 whitish. Bot. King Exp. 227. In the Wahsatch Mountains of Utah and 

 probably extending eastward in the mountains. 



* * Leaves undivided, merely crenate or crenulate : scape or stem leafy-bracteate. 

 - Corolla mostly 2-parted, rarely 3-parted, and stamens inserted on its very 



base. 



2. S. alpina, Gray. A span or only an inch or two high, early glabrate 

 except the very lanuginous inflorescence : radical leaves oval or subcordate, an 

 inch or so long on a longer petiole : base of scape naked : bracts and lanceolate 

 sepals very long-woolly-villous at margins : corolla violet-purple ; its broad upper 

 lip twice the length of the calyx, the 2 to 3-parted lower one small and included. 

 Am. Jour. Sci. u. xxxiv. 251. In the alpine region of the Colorado Rocky 

 Mountains. 



