115. BORAGINAGEAE 209 



1. Flowers few or solitary on bractless scapes; calyx 5-cleft. 



3. Flowers 3-15; calyx-lobes triangular-lanceolate, shorter than 



the tube; parasitic on Artemisia and other Compositae; in 



sandy soil, locally in the northern counties 



O. fasciculata Nutt. 



3. Flower solitary; calyx-lobes subulate, longer than the tube; 



parasitic on various plants, not common. May-July. 



[Anoplarithus uniflorus (L.) Endl.] O. uniflora L. 



114. Martyniaceae Link — Martynia Family 



1 . Proboscidea Keller — Unicom Plant 

 P. louisianica (Mill.) Thell. River banks and waste ground, local. 

 July-Sept. [Martynia louisianica Mill.; M. proboscidea Glox.: P. 

 jussieui Keller]. 



115. Boraginaceae Lindl. — Borage Family 



1. Ovary undivided, the style terminal; corolla regular, blue or white, the 



stamens includfd 1. Heliotropium 



1. Ovary 4-lobed, the style arising between the lobes. 

 2. Corolla regular; stamens included, equal. 



3. Nutlets bearing barbed prickles; flowers blue, reddish, or white; plants 

 pubescent. 



4. Nutlets divergent, covered with short prickles 2. Cynoglossum 



4. Nutlets erect, prickly on the margin, rarely also on the back. 



5. Fruiting pedicels recurved or reflexed; style shorter than the 



nutlets; plants biennial or perennial 3. Hackelia 



5. Fruiting pedicels erect; style longer than the nutlets; plants 



annual 4. Lappula 



3. Nutlets not prickly. 



6. Receptacle conical; corolla yellow; pubescent weedy annuals 



5. Amsinckia 



6. Receptacle flat or convex. 



7. Plants glabrous, perennial; corolla blue (rarely whitish), tubular- 



funnelform ; nutlets wrinkled when dry 6. Mertensia 



7. Plants pubescent. 



8. Anthers connivent around the style; corolla blue, rotate 



12. Borago 



8. Anthers not connivent around the style. 



9. Scar of nutlets small, flat; nutlets smooth, glossy (except 

 Lithosperrnurn arvense). 

 10. Corolla salverform, the lobes obtuse, spreading. 

 1 1 . Racemes bractless. 



12. Corolla white with yellow throat 7. Allocarya 



12. Corolla blue or white 8. Myosotis 



1 1 . Racemes bracteate, each flower borne in the axil of a 

 bract; corolla yellow, or white, the tube cyHndrical, 



often elongate 9. Lithosperrnurn 



10. Corolla tubular or funnelform. 



