448 ORDER LXXXVII. BOKAGINACEiE. 



Genus II.— CYXOGLOS'SUM. L. 5—1. 

 (From kuon, a dog, and glossa, a tongue.) 



Calyx 5-parted. Corolla funnel-form, with a short tube and 

 5-lobed border ; orifice closed. Seeds depressed, affixed to the 

 style by their inner margin. 



1. C. Virgin'icum, (L.) Stem erect, hispid. Leaven large, oval, ob- 

 long, the upper ones amplexicaul, hairy. Flowers in terminal corymbs. 

 — Blue. if. May — June. In shady woods. 1 — 2 feet. 



Hound's Tongue. 



2. C. Moriso'ni, (D. C.) {Myosotis Virginiana, L.) Stem branching, hairy. 

 Leaves oblong-lanceolate, acuminate, scabrous above. Flowers in divar- 

 icate, dichotomous racemes. Nuts covered with hooked prickles. — 

 Blue. $ . June — July. Upper districts of Car. and Geo. 1 — 2 feet. 



Genus III.— ONOSMO'DIUM. Mich. 5—1. 

 (From onosma and eidos— like the Onosma.) 



Calyx 5-parted, with acute, ciliate segments. Corolla cam- 

 panulate, with a border 5-parted, ventricose. Stamens included. 

 Syle exserted. Nuts shining. 



1. 0. Carolinia'num, (A., D. C.) Villous. Leaves oblong-oval, cili- 

 ate ; bracts ovate-lanceolate ; lobes of the calyx ovate-lanceolate, 

 shorter than the tube of the corolla. Corolla glabrous ; lobes ovate, 

 acute. — White. If. Stony hills. 



2. O. his'pidum, (Nutt.) Stem obtusely angled, hispid, branched. 

 Leaves sessile, oblong-lanceolate, pubescent, entire. Flowers in simple 

 racemes. Calyx hispid, ciliate. Corolla pubescent. Seed angled on 

 the inner side. — Yellowish. If. May — June. Sandy soils. Common. 

 12 — 18 inches. 



Genus IV.— PULMONA'RIA. L. 5—1. 

 (From its supposed effect on the lungs.) 



Calyx small, 5-parted, persistent, prismatic. Corolla funnel- 

 form, obscurely 5-lobed. 



1. P. Virgin'ica, (L.) Stem erect, glabrous, branching. Leaves lan- 

 ceolate-ovate, glabrous, glaucous. Flowers in terminal fascicles. Co- 

 rolla several times as long as the calyx. Style slender, as long as the 

 stamens. — Violet-color. 2f. April — May. Mountains. 1 — 2 feet. 



Mertensia Virginica, D. C. 



Genus V.— HELIOTRO'PUM. L. 5—1. 

 (From 7ielio8, the sun, and trope, twining.) 



Calyx 5-parted, persistent. Corolla hypogynous, 5-parted. 

 Stamens 5, alternate with the segments of the corolla. Ovary 

 entire, 4-celled, with a pendulous ovule in each cell. Style 

 simple. Fruit drupaceous, easily separable into 4 pieces. 

 Seed solitary. Herbaceous plants, with alternate simple leaves. 

 Flowers in axillary or terminal spikes. 



