KEY TO THE FAMILIES AND GENERA 



103 



EE. Stamens inserted on the 

 throat, rarely at base of 

 corolla: fr. capsular or 2- 

 berried: style-branches fili- 

 form 16. P.EOKKI < TRIBE. 



EEE. Stamens inserted at base of 

 corolla, rarely on throat: fr. 

 berry-like or indehiscent: 

 style entire or with long 



branches 17. ANTHOSPERMA 



(TRIBE. 



//. Key to the Tribes. 

 1. Nauclea Tribe. 



Calyx-tubes confluent: fr. a globose, fleshy syn- 

 carp: ovary 2-celled; ovules solitary, pendu- 

 lous 1. Cephal- 



[anthus. 



2. Cinchona Tribe. 



A. Corolla valvate. 

 B. Placenta ascending from the base of the 



septum, or erect 2. Manettia. 



BB. Placentae adnate to the middle of the sep- 

 tum. 



c. Caps, septicidal 3. Cinchona.. 



cc. Caps, loculicidal 4. Bouvardia. 



AA. Corolla imbricate; stamens inserted in the 

 throat. 



B. Sepals never bract-like 5. Luculia. 



BB. One of the sepals in some fls. in each infl. 

 developing into a large white persistent 



appendage 6. Emmenop- 



[terw 

 3. Condaminea Tribe. 



One calyx-lobe dilated into an ample colored 



blade 7. Piitckneya. 



4. Hedyotis Tribe. 



A. Calyx -lobes unequal: caps, loculicidal 8. Pentag. 



AA. Calyx-lobes equal: caps, loculicidal at the 



top 9. Houstonia. 



5. Rondeletia Tribe. 



Corolla imbricate, lobes equal or nearly so 10. Rondeletia. 



6. Musssenda Tribe. 



Infl. terminal, corymbose; ovary 1-2-eelled ; calyx- 

 lobes 5, 1 dilated and colored. 11. Musssenda. 



7. Hamelia Tribe. 



A. Corolla 5-ribbed: berry 5-celled 12. Hamelia. 



AA. Corolla 4-5-lobed: berry 2-3-celled 13. Hoffmannia. 



8. Gardenia Tribe. 



A. Infl. usually terminal. 



B. Corolla-tube short 14. Burchettia. 



BB. Corolla-tube long. 



c. Calyx 5-toothed 15. PotOQUeria. 



cc. Calyx-lobes large and leafy 16. Lepinctinn. 



AA. Infl. usually axillary. 



B. Style has a spindle or club-shaped stigma, 



entire or 2-toothed. 

 c. Seed-coat membranous. 



D. Calyx-limb various; ovary 2-celled 17. Randia. 



DD. Calyx-limb often tubular; ovary 1- 



celled 18. Gardenia. 



cc. Seed-coat fibrous or subfibrous. 



D. Corolla-tube long and slender 19. Oxyanthus. 



DD. Corolla-tube short. 



E. Calyx 5-parted 20. Milrio- 



EE. Calyx truncate or 5-toothed 21. Genipa. 



BB. Style-branches 2, distinct (except some- 

 times in Kraussia). 



c. Throat of corolla bearded 22. Kraussia. 



cc. Throat of corolla glabrous 23. Tricalysia. 



9. Chiococca Tribe. 



Corolla valvate: infl. axillary, racemose; anthers 

 dorsifixed; stigma club-shaped 24. Chiococca. 



10. Alberta Tribe. 



Infl. terminal; the 2-4 calyx-lobes dilated; 



anthers pilose on back 25. Alberta. 



11. Vangueria Tribe. 



A. Drupe 1-2-stoned 26. PUc/ronia. 



AA. Drupe 3-6-stoned 27. Vnnaaeria. 



12. Ixora Tribe. 



A. Fls. clustered in axils 28. Coffea. 



AA. Fls. in 2-3-forking corymbs. 



B. Style-branches 2, short, rarely connate: 1 vs. 



leathery 29. Ixora. 



BB. Style very far exserted, the slender spindle- 

 shaped stigma usually long: Ivs. usually 

 membranous 30. Pavetta. 



13. Morinda Tribe. 



A. Fls. confluent in heads, which are many-fld., 



solitary or umbellate 31. Morinda. 



AA. Fls. free; calyx-limb 4-5-fid; corolla villous at 

 throat ; stigma club-shaped, 2-4-lobed : 



drupe 1-4-stoned: infl. axillary 32. Damna- 



[canthus. 

 14. Galium Tribe. 



A^ Corolla funnel-shaped or somewhat tubular. 

 B. Fls. 4-merous, with or without bracts, but 



no bractlets; style-branches subequal 33. Asperula. 



BB. Fls. 4-5-merous, bracted and with 2 



bractlets; style-branches unequal 34. Crucianella. 



AA. Corolla rotate or rotate-campanulate. 



B. Fls. 5-merous 35. Rubia. 



BB. Fls. 4-merous 36. Galium. 



15. Psychotria Tribe. 



Infl. terminal; calyx usually 5-toothed; corolla 



5-lobed, rarely 4-lobed; tube usually short 37. Psychotria 



16. Paederia Tribe. 



A, Ovary 2-celled; stigma 2, capillary, twisted: 



f r. drupaceous : twining plant 38. Psederia. 



AA. Ovary 5-celled: fr. a caps.: small upright 



shrubs 39. Leptodermis. 



17. Anthosperma Tribe. 



A. Stamens inserted in throat; style-branches 4. ...40. Mitchella. 

 AA. Stamens inserted at or near base of corolla. 



B. Fls. bisexual; style shortly 2-cut: shrub. . . .41. Serissa. 

 BB. Fls. unisexual or bisexual; style 2-parted 

 to the base or near it. 



c. Plants are creeping herbs 42. Nertera. 



cc. Pl&nts are shrubs or small trees 43. Coprosma. 



Other genera incidentally described are: Catesbcea, Cephaelia. 

 Rxostemma, Fernelia, Guettarda, Oldenlandia, Plocama, and 

 Siircocephalus. 



104. VALERIANACEjE. 



A. Stamens 4 1. Patrinia. 



AA. Stamens 1, rarely 2: corolla-tube spurred, the 



limb spreading 2. Centranthus . 



A A A. Stamens 2; corolla-tube spurred, the limb 



2-lipped 3. Fedia. 



AAAA. Stamens usually 3. 



B. Calyx-limb finally pappiform 4. Valeriana. 



BB. Calyx -limb various but not pappiform 5. Valerianella . 



105. DIPSACACE-ffi. 



A. Stigma terminal, straight: fls. densely 

 crowded in the axils of the floral Ivs., form- 

 ing whorls after the manner of the mint 



family 1. Morina. 



A A. Stigma oblique or lateral, rarely straightish: 



Ms. in terminal heads. 



B. Bracts of involucre generally herbaceous; 

 chaff of receptacle rigidly awl-shaped- 

 acuminate or spinescent ; corolla 4-fid 2. Dipaacus. 



BB. Bracts and chaff rigidly paleaceous, rarely 



sub-herbaceous; corolla 4-fid 3, Cephalaria. 



BBB. Bracts leafy, in about 2 series; chaff short, 

 or very narrow or abortive; corolla 45- 

 cut 4. Scabiosa. 



106. COMPOSITE. 



/. Summary ef Tribes. 



Series 1. TUBUUFLOR.E. Corollas tubular and regular in all 

 the bisexual fls. 



A. Heads composed entirely of disk-fls., 

 which are all perfect and never truly 

 yellow. 



B. Style-branches awl-shaped, acute, 

 minutely hairy: Ivs. generally al- 

 ternate: anthers sagittate ;it Im-o.... 1. YF.HNONIA TRIBE. 



