Onosmodium. BORAGINACEiE. 83 



Order LXXII. BORAGINACE.E. Jus*. The Borage Tribe. 



Calyx of five leafy persistent equal sepals, which are more or less united at the 

 base. Corolla regular, 5-lobed, often with a row of scales in the throat. 

 Stamens 5, alternate with the lobes of the corolla. Ovary deeply 4-lobed ; 

 each division with a single suspended ovule : style single, proceeding from the 

 base of the lobes of the ovary. Fruit consisting of four little nuts or achenia. 

 Seeds with little or no albumen : cotyledons plano-convex. — Herbaceous or 

 sometimes shrubby plants, with round stems and alternate usually rough leaves. 

 Flowers often in one-sided racemes which are spirally xevolute before expan- 

 sion, mostly without bracts. 



CONSPECTUS OF THE GENERA. 



* Nuts fixed to the receptacle. 

 t Throat of the corolla naked. 



1. Onosmodium. Calyx deeply 5-parted. Corolla tubular-campanulate ; the lobes i^ute, connivent. Style much 



exserted. Nuts ovoid, shining, not perforate at the base. 



2. Echitjm. Corolla irregular, somewhat campanulate ; the limb obliquely 5-lobed. Nuts tuberculate, not perforate at 



the base, obliquely acuminate. 



3. Pulmonaria. Calyx 5-parted, somewhat prismatic. Corolla (large) salver-funnclform. Nuts not perforate at the 



base, very smooth. 



4. Lithospermum. Calyx 5-parted. Corolla (small) funnelform. Nuts not perforate at the base, very smooth or 



rarely rugose. 



5. Batschia. Calyx deeply 5-parted. Corolla (large) salverform ; the limb nearly flat ; the tube closed at the base by 



a bearded ring. Nuts not perforate at the base, smooth and shining. 



ft Throat of the corolla more or less clothed with scales. 



6. Lycopsis. Calyx 5-clcft. Corolla funnel-shaped, with a curved tube. Nuts concave at the base. 



7. Myosotis. Calyx 5-cIeft. Corolla salver-shaped ; the throat half closed with convex scales. Nuts perforated at 



the base. 



8. Symphytum. Calyx 5-parted. Corolla cylindrical-campanulate ; the throat closed with subulate scales. Nuts 



rugous, perforated at the base. 



** Nuts fixed to the style or central column. 



9. Cynoglossum. Calyx 5-parted. Corolla funnelform ; the throat closed with convex scales. Nuts depressed, covered 



with rigid prickles. 



10. Echinospermum. Calyx 5-cleft. Corolla somewhat salverform ; the throat closed with convex scales. Nuts com- 

 pressed or angular, muricate on the margin. 



1. ONOSMODIUM. Michx. fl. 1. p. 132 ; Endl. gen. 3755. ONOSMODIUM. 



[ So named from its resemblance to Onosma, another genus of this order.] 

 Calyx 5-par f ed. Corolla tubular-campanulate, naked in the throat; the lobes acuta and 

 connivent. Style much exserted. Nuts ovoid, shining, fixed by a flat base to the receptacle. 

 — More or less hispid herbaceous plants, with the flowers in terminal leafy racemes. 



11* 



