HYDROPHYLLE^E. 255 



P. etrg-inica Linn. : smooth ; stem erect ; radical leaves obovate- 

 oblong, obtuse ; stem leaves narrower ; flowers in terminal racemes 

 or fascicles ; calyx much shorter than the tube of the corol ; seg- 

 ments lanceolate, acute. Lithospermum pulchrum Lehm. 



HAB. Wet grounds. N. Y. to Car. W. to Miss. May. U- 

 Stem 6 12 inches high. Leaves smootli and a little glaucous. 

 Flowers large, bright blue, in terminal racemes. Plant turning 

 black by drying. Lungwort. 



ORDER LXXXVI. HYDROPHYLLE^. Lind. 



Calyx 5 10-divided, persistent. Corol monopetalous, 

 regular, or nearly so, 5-lobed, with 2 lamellae towards the 

 base of each constituent petal. Stamens alternate with the 

 lobes of the corol ; anthers ovate, 2-celled, versatile, bursting 

 longitudinally. Ovary free, simple, 1-celled ; ovules definite 

 or indefinite, suspended ; style terminal, bifid ; stigmas 2. 

 Placentae 2, parietal, or on stalks from the base of the cavity. 

 Fruit capsular, few, or many-seeded, invested with the per- 

 manent calyx. Seeds definite or indefinite ; embryo taper, ly- 

 ing at the end of a copious cartilaginous albumen $ radicle su- 

 perior. 



Hispid herbs. Leaves opposite, or alternate and lobed. 



1. HYDROPHYLLUM. Linn. 



Calyx 5-parted. Corol campanulate, 5-cleft, with 5 longi- 

 tudinal margined melliferous grooves on the inside. Stamens 

 5, exserted ; filaments bearded in the middle. Stigma bifid. 

 Capsule globose, 1-celled, 2-valved, 1-seeded, 3 other seeds 

 mostly abortive. Pentandria. Monogynia. 



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

 pinnate ; segments oval-lanceolate, with deep serratures ; clusters of 

 flowers crowded ; peduncles larger than the petioles. 



HAB. Woods. Can. to Car. June. It. Stem 18 inches high. 

 Flowers white and blue, in compact lateral and axillary clusters. 



2. H. canadense Linn. : somewhat hairy ; leaves angularly sub-5- 

 lobed, cordate at base ; remotely serrate ; flowers in crowded fascicles j 

 peduncles shorter than the petioles. 



HAB. Mountains. Can. and N. S. June. 1. Stem 18 inches 

 high. Leaves large and broad, somewhat palmate, about 5 7-> 

 lobed. Floioers blue and white, in clusters. 



2. NEMOPHILA. NutL 

 Calyx 10-parted ; alternate lobes reflexed. Corol subcam 



