144 Flora of the Palouse Region 



237. NEMOPHILA. 



Diffuse and tender annual herbs: leaves opposite or partly alter- 

 nate, pinnatifid or lobed: peduncles terminal or lateral, i-flowered, 

 slender: calyx enlarging more or less in fruit, 5-parted, with a re- 

 flexed appendage at each sinus: corolla rotate or nearly campanu- 

 late, deeply 5-lobed, the throat appendaged more or less with 10 

 internal scales or plates: stamens and style shorter than the corolla: 

 ovules 4 or many: capsule similar to the preceding, ripening 1-16 

 seeds. 



N. breviflora Gray. Whole plant sparsely hirsute, erect when young, 

 later prostrate: stems 5-40 cm. long: leaves alternate, 1-2 cm. long pinnately 

 3-5-parted, the divisions oblong-lanceolate, acute, entire: peduncles about 

 equalling the petioles: calyx appendages much smaller than the proper lobes, 

 both ciliate: corolla campanulate, white, shorter than the calyx lobes; inter- 

 nal appendages cuneate, fringed at the summit: ovules four; seed solitary 

 nearly filling the capsule. Summit of Cedar Mountain. 



238. PHACELiA. 



Perennial or mostly annual herbs: leaves simple, lobed or divid- 

 ed, alternate, or the lowest opposite: flowers in one-sided raceme- 

 like cymes: calyx deeply 5-parted, the lobes usually narrow and 

 similar: corolla from almost rotate to narrow-funnelform, com- 

 monly with appendages inside of the tube, consisting of 10 vertical 

 plates in pairs between the bases of the filaments: stamens equally 

 inserted low down or at the base of the corolla: ovary with narrow 

 parietal placentae; ovules and seeds 4-numerous. 



Corolla violet: ovules 12-16. P. menziesii. 



Corolla white: ovules 4. P. circixata. 



P. menziesii Torr. Annual, 10-50 cm. high, simple below the inflores- 

 cence; whole plant rough-hairy, usually with some shorter white pubescence: 

 leaves sessile, linear or lanceolate, entire or cleft into 2-5 narrow lobes: in- 

 florescence usually branched, consisting of spike-like racemes; pedicels short: 

 calyx-lobes linear, hispid-ciliate: corolla violet-blue, nearly rotate, 12-15 

 mm. broad; appendages 10, narrow, free from the filaments: stamens equall- 

 ing the corolla; filaments sparsely hairy: style 2-cleft; capsule shorter than 

 the calyx; ovules 12-16; seeds pitted-reticulate. Stony soil, commou in 

 Snake River canyon. 



P. circinata Jacq. f. Biennial, erect, .5-1.5 m. high, rough-hairy and 

 canescent throughout: leaves lanceolate, acute, simple or with 1-2 pairs of 

 small lateral leaflets, the lower petioled, the upper nearly sessile: inflores- 

 cence compound, of racemosely arranged spikes, much coiled when in bud: 

 calyx-lobes linear or lanceolate, very hispid: corolla white or whitish, 5- 

 lobed, exceeding the calyx; appendages 10, broad, united at base to the fila- 

 ments: stamens much exserted, the filaments sparsely hairy: capsule ovate, 

 acute; ovules 4; seed-coats pitted and honey-comb-like. Very variable. Our 

 form has been named P. heterophylla Pursh. 



