ORDER LXXXVH. BORAGINACE^E. 447 



Genus IV— DICHON'DRA. Foster, 6—2. 

 (From dia, twice, and chondros, a grain, from the form of its capsules.) 



Calyx 5-parted ; segments spatulate. Corolla 5-parted, bell- 

 form, short. Stamens 5. Stigmas 2. Capsule 2-celled, formed 

 of 2 carpels, each 1 -seeded. Seeds globose. 



1. D. Carolines 'sis, (Mich.) Stem creeping, pubescent. Leaves 

 somewhat reniform, emarginate. Calyx ciliate, villous. — Purple. If. 

 June. Lou. 



Genus V.— CUSCU'TA. Tourn. 5—2. 

 (The ancient name of a parasitical plant.) 



Calyx 4-cleft. Corolla globose, urceolate ; limb 4 — 5-cleft. 

 Stamens 5, inserted into the corolla. Stigmas 2. Capsule 2- 

 celled, 2 seeds in each cell ; dehiscence transverse. 



1. C. America's a, (L.) Stem twining, filiform, resembling orange- 

 colored threads, springing first from the earth, afterward becoming 

 parasitic ; the root dying. Leaves none. Flowers in racemose clusters. 

 — White. 0. Through the summer. Common. 



Love-vine. C. compacta, Juss. 



Order LXXX VII. — BOR AGIN A'CEJS. (Borage Family.) 



Calyx 5-cleft, persistent. Corolla hypogynous, regular, 5- 

 cleft. Stamens inserted into the corolla, alternate with its seg- 

 ments. Ovary 4-lobed, 4-celled, with 4 suspended ovules. 

 Style simple, arising from the base of the lobes. Nuts 4, dis- 

 tinct. Herbaceous plants, with alternate, scabrous leaves. 

 Flowers in secund spikes or racemes. 



Genus I.— LITHOSPER'MUM. L. 5—1. 

 (From Uthos, a stone, and sperma, a seed.) 



Calyx 5-parted. Corolla funnel-form, small, 5-lobed. Sta- 

 mens included. Nuts shining. 



1. L. arven'se, (L.) Stem erect, hispid, branching. Leaves oblong- 

 obtuse or ovate. Flowers solitary, axillary, forming leafy racemes. 

 Calyx with long, linear, subulate segments. Nut* rugose. — White. 0. 

 April — May. Introduced. 12 — 18 inches. Corn Gromwell. 



2. L. hir'tum, (Leh.) Stem erect, hirsute, simple. Leaves hispid, ob- 

 long, somewhat oval, those of the flowers ovate. Calyx with long, 

 lanceolate segments, persistent. Corolla with 5 tubercles in the throat. 

 Flowers in terminal racemes. — Bright orange. It. April — May. Com- 

 mon. 10 — 16 inches. Batschia Gmelini, Mich. 



3. L. canes'cf.ns, (Leh.) Stem villous, erect, simple. Leaves oblong, 

 mucronate, obtuse, villous beneath. Flowers axillary, crowded near 

 the summit of the stem. Calyx with linear-lanceolate segments, short; 

 tube of the corolla double the length of the calyx. — Bright orange. U . 

 June — July. 8—12 inches. Fuccoon. 



