XCV. BOEAGlNEiE. 297 



* Ovary undivided ; style terminal. 



Tribe 1. CoEDiEiE. St^'le twice forked at the summit, rarely 0. Fruit 

 succulent, 4-seeded. Cotyledons plaited. — Shrubs. 

 Calyx tubular, ^-S-toothed. Corolla funnel- or 



salver-shaped 1. Coedia. 



Tribe 2. Eheetie^. Style 2-lobed at apex. Fruit succulent, 4-seeded. 

 Cotyledons flat. — Shrubs, 

 Stamens exserted. Style 2-fid ; stigma capitellate. 



Berry fleshy or nearly dry 2. Ehretia. 



Stamens hicluded ; style short ; stigma entire or 



2-lobed ; fruit of 2 separable carpels or 4-parted 3. Tofrnefortia. 



Tribe 3. Heliotrope.^, Style simple, terminal. Fruit nearly dry, se- 

 parable into 2 parts. — Shrubs or herbs. 

 Corolla salver-sliaped, with open throat. Nuts 4, 



at length separating 4. Heliotropium. 



Corolla salver-shaped, wath a constricted, 5-rayed 



throat 5. Heliophttum. 



** Ovary deeply 4:-lobed; style simple, rising from the base of the lobes. 



Tribe 4, Boragej^-. Ovary consisting either of 2 separate 2-celled car- 

 pels or deeply 4-lobed, Style springing from tlie base of the lobes. — Shrubs 

 or herbs. 

 Nuts not united to the style or style-base. 



Corolla more or less irregular, funnel-shaped, 

 nude or with small scales at the origin of the 

 filaments. Nuts imperforate at base. 

 A small hairy-edged scale at the base of each 



stamen 6. Lobostemon. 



No scale at the base of the stamen .... 7. Echium. 

 Corolla regular, nude or usually with scales or 

 prominences in the throat, opposite the lobes. 

 Nuts hollowed out (perforate) at base. Corolla- 

 tube closed by rough scales. 

 Corolla-lobes erect. Calyx 5-angled ; lobes 



ovate : — an undershrub 8. Stomatechium. 



Corolla-lobes spreading. Calyx 5-parted or 



-cleft 9. Anchusa. 



Nuts not hollowed (imperforate) at base. 



Corolla open-mouthed. Stigma capitate. 



Nuts ovate 10. Lithospermum. 



Corolla closed with scales. Stigma obtuse. 



Nuts compressed 11. Mtosotis. 



Nuts inserted on a flat, more or less lateral area, 

 united with the style or style-base, not perfo- 

 rate at base. Corolla regular, with or without 

 scales in tlie throat. 

 Calyx not enlarged in fruit. Corolla-lobes blunt. 

 Corolla salver-shaped. Nuts margined, with 



hooked bristles 12, Echinospermum:. 



Corolla funnel-sliaped. Nuts not marghied, 



irregularly covered with hooked bristles . . 13. Cynoglossum. 

 Calyx enlarged, its segments and those of corolla 



taper-pointed 14, Trichodesma. 



