SCROPHULARIACEAE (FIG WORT FAMILY) 449 



sterile filament flattened toward the apex, glabrous. In the Uintah moun- 

 tains of Wyoming, the Wasatch of Utah, and the Humboldt of Nevada. 



48. Pentstemon sepalulus A. Nels. Erect, slender, and paniculately slen- 

 der branched above, 3-8 dm. high, very pale and glaucous throughout: leaves 

 lanceolate to linear, narrowed toward the base, entire: peduncles 1-2-flowered: 

 sepals remarkably small, ovate, mucronate: corolla violet-blue, 3-4 cm. long, 

 the expanded limb broad: anthers as in the preceding; sterile filament glabrous. 

 (P. azureus ambiguus Gray, Syn. Fl. 2: 272. 1886; P. heterophyllus Wats. 

 Bot. King's Exp. 222. 1871.) In the mountains of northwestern Colorado, 

 in adjacent Utah and Wyoming. 



6. CHIONOPHILA Benth. 



A high-alpine dwarf perennial with entire leaves mostly in a radical tuft 

 and a dense spike of cream-colored flowers. Calyx funnelform. Corolla 

 tubular, with slightly dilated throat and bilabiate limb ; upper lip erect, barely 

 2-lobed; lower with convex densely bearded base forming a palate, 3-lobed. 

 Anther cells divaricate and confluent. 



1. Chionophila Jamesii Benth. in DC. Prodr. 10: 331. 1846. Glabrous or 

 nearly so, 8-15 cm. high: leaves thickish, spatulate or lanceolate, tapering into 

 a scarious sheathing base ; those on the scape-like flowering stems few, paired 

 or alternate, linear: spike few to many-flowered, mostly secund, bracteate: 

 corolla about 1 cm. long, pale cream-color or greenish-white: sterile filament 

 small and short. Alpine regions of the mountains of Colorado and southern 

 Wyoming. 



7. GRATIOLA L. HEDGE HYSSOP 



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

 Pedicels solitary and axillary, a pair of bractlets close to the calyx and equal- 

 ing it. Corolla-tube cylindraceous, with subequal lips; the upper entire or 

 lobed; the lower 3-cleft. Anther-bearing stamens 2; the anterior pair sterile- 

 rudimentary; anther cells distinct. 



1. Gratiola virginiana L. Sp. PI. 17. 1753. Viscid-puberulent or pubescent, 

 often nearly glabrous below, divergently branched from the base, 1-2 dm. 

 high: leaves commonly glabrate, oblong-lanceolate, acute, entire to denticu- 

 late-serrate, mostly narrow at base: corolla 7-10 mm. long, with yellowish 

 tube and white limb, about twice as long as the calyx: anther-cells separated 

 by a broad connective: capsule ovoid. Wet soil; across the continent. 



8. SYNTHYRIS Benth. 



Perennial herbs with simple stems, mainly radical leaves, and rather small 

 purple, blue, or pink flowers in terminal spikes or racemes. Calyx 4-parted, 

 the segments oblong. Corolla oblong to short-campanulate, 4-cleft, more 

 or less irregular, rarely wanting. Stamens 2, exserted; filaments slender; 

 anther-cells parallel or somewhat divergent below, not confluent at the apex. 

 Style filiform, with small capitate stigma. Capsule compressed, obtuse or 

 emarginate. (Besseya Rydb.) . 



Corolla wanting . . . . . . . . . . 1. S. wyomingensis. 



Corolla present. 



Leaves more or less divided. 



Leaves pinnatifid 2. S. pinnatifida. 



Leaves laciniately cleft to the middle or less . . . .3,8. laciniata. 



Leaves undivided. 

 Flowers erect. 



Corolla violet or purple. 



Leaves oval or subcordate . . . . . . 4. S. alpina. 



Leaves oblong . . . . . . . . . 5. S. plantaginea. 



Corolla yellowish or white . 6. S. Ritteriana. 



Flowers reflexed . . . . . * . . . 7. S. reflexa. 



ROCKY MT. BOT. 29 



