HYDROPHYLLACE.E. 253 



bifid. Capsule globose, 2-valved, 1 -seeded, 3 other seeds 

 mostly abortive. 



* Sinuses of the calyx naked. 



1. H. Virginicum Linn. : stem nearly smooth ; leaves pinnatifid and 

 pinnate ; the lobes oval-lanceolate, with deep serratures ; clusters of flowers 

 crowded ; peduncles longer than the petioles; segments of the calyx lance- 

 linear, hispid-ciliate. 



Moist woods. Can. to Car. W. to Miss. June, July. ?].. Stem 12 18 

 inches high, often branched from the base. Leaves pinnately cut into 5 7 seg- 

 ments, on long petioles. Flowers blue and white, hi compact peduncled lateral 

 and axillary clusters. Virginian Waterleaf. 



2. H. Canadensc Linn. : somewhat hairy ; leaves angularly sub- 5-lobed, 

 mostly cordate at base, coarsely toothed ; flowers in crowded fascicles ; pe- 

 duncles shorter than the petioles; segments of the calyx narrow-linear, 

 slightly hairy. 



Shady woods. Can. to Car. W. to Ohio. June. Ij.. Stem 1218 inches 

 high. Leaves large and broad, somewhat palmate, about 5 7-lobed ; lobes 

 broad, cut and toothed. Flowers blue and white, in crowded clusters. 



Canadian Waterleaf. 



3. H. macrophyllum Nutt. : leaves oblong, pinnately divided at base, 

 with the segments towards the apex pinnatifid or subpinnate, hairy on 

 both sides ; the lobes ovate, with coarse ovate mucronulate teeth ; pedun- 

 cles very long and with the calyx hairy ; segments of the calyx ovate at 

 base, long- acuminate. (D. C.) Phacelia bipinnatijida Frank not of 

 Mick. 



Alleghany Mountains, Penn. ? Short. Ohio. Gray. Leaves a foot or more 

 in length. Corolla white, scarcely longer than the calyx. Large Waterleaf. 



** Sinuses oftlie calyx appendiculate. 



4. H. appendiculatum Mich. : stem hairy ; leaves hairy above, pubescent 

 beneath ; lower pinnately divided ; upper palmately 5-lobed ; sinuses of the 

 calyx with minute oval appendages. Nemophila paniculaia Spreng. 



Moist woods. Can. to Virg. W. to Miss. May. () ? Stem about a foot 

 high, branching at the summit. Leaves on long petioles, the lobes toothed. 

 Flowers blue, on short peduncles, in somewhat paniculate racemes. 



Hairy Waterleaf. 



2. PHACELIA. Juss. Phacelia. 

 (From the Greek ^>aXof, a bundle ; in allusion to its fascicled spike.) 



Calyx 5-parted, the sinuses naked. Corolla tubular-campan- 

 ulate, caducous, 5-cleft or half 5-cleft, with 10 plaits or scales 

 on the inside. Stamens often exserted. Style bifid. Capsule 

 ovoid, 2-valved. Seeds 4, oblong. 



P. bipinnatifda Mich. : stem somewhat erect, hairy ; leaves pinnately 

 divided, on long petioles; lateral segments 2 4, ovate^. acute, incisely- 

 lobed ; terminal one 3 5-cleft ; racemes elongated, mostly bifid ; lobes of 

 the calyx linear-acuminate, half as long as the corolla. 



