114 



KEY TO THE FAMILIES AND GENERA 



AA. Ch*aTy wholly superior : f r. oapi-nilar or baccate, 

 unknown in Saintpaulia. 

 B. Aniher-ooUsilistinct and parallel. 



c. Disk with a largp iH>sU'rior gland, other- 

 wise small or waiitint;- 



D. FilanieutJi* frtn* anions themselves 9. Episcia, 



DD. Filaments connate into a sheath which 

 is spUi on the posterior side. 



E. Anthers sopanile 10. AUnpltctus. 



EE. Anthers connate eross-Uke 11. Columnea, 



cc. Disk annuliir, clevatod, almost cup- 

 shapeil. 



D. Perfect stamens 2 12. Aofilmyla. 



DD. Perfect stamens 4 13. THchm- 



[porutn 



CCC. Disk obsolete 14. ^fitraria. 



BB. Anther-eells divaricate or diverging, rarely 

 sub-parallel, 

 c. DUk 0. 



D. Anthers free 15. Ramoiida. 



DD. Anthers cohering in a tube extending 



beyond the cells 16. Commdron. 



cc. Disk reduced to a posterior gland 17. Codonanlhe. 



CCC. Disk a ring (rarely dimidiate in Chirita), 

 E. Lvs. cauline. opposite. 



F. Stamens 4 18. Besleria. 



FF. Stamens 2 19. Chirita. 



EE. Lvs. basal (rarely opposite in Strep- 

 tocarpus). 



F. Stamens 4 20. IlahtrUea. 



FF. Stamens 2. [pus, 



O. Corolla-tube long 21. Strepiocar- 



GO. CoroUa-tube short 22. Snintpaulia. 



Additional genera described are: Acanthonema, Boea, 

 Corytfaoloma. Cyrtandra, Klugia, Lysionotus, Rhabdothamnua 

 and Roettlera. 



136. MARTYNIACEiE. 



A. CoroUa-tubes swollen above the short base 1. Martynia. 



AA. Corolla-lube very long, slender and cylindrical 



with a bell-shaped throat 2. Craniolarin. 



GG. Tube long, slender, scarcely 



swollen at apex 14. Cham;tr- 



[anthemum. 



DD. Stamens 2: oviiles in each cell 2 15. Eranthe- 



cc. Corolla bilabiate or sub-equally 4-cut. [mum. 



D. Ovules in each cell 3 or more l(i. Fhlogacan- 



i)». Ovules in each cell 2. [thus. 



E. Fls. with 2 or 4 bracts longer than 



calyx 17. Peristrophe. 



EE. Fls. without such bracts. 



F. Stamens 4, anthers all 1-celled. . . .18. Aphelandra^ 

 FF. Stamens 2, anthers 2-celled. 



G. Anther-cells unlike, one larger 

 or affixed liigher. (In Jaco- 

 binia cells often subequal.) 

 H. The lower anther cell usually 



spurred 19. Justicia. 



BH. The anther-cells not spurred, 

 sometimes equally mucron- 

 ate at base. 

 I. The corolla with short tube 



and ample lips 20. Adhatoda. 



II. The corolla-tube usually 



long and narrow 21. Jacobinia. 



GG. Anther-cells equal. 



H. Staminodes at base of fila- 

 ments small. 

 I. Corolla-lube swollen above; 

 posterior Up incurved, 

 anterior .spreading, 3-cut.22. Graptophyl- 

 II. Corolla-tube elongated; limb [lum, 



sub-bilabiate, 4-lobed. . . .23. Thyrsacan- 

 HH. Staminodes 0, [thus 



I. \'einsofIvs. white or colored.24. Fittonia. 

 II. Veins of lvs. green. 



J. Calyx-segms, Unear or 



bristle-hke 25. Schaueria. 



jj. Calyx small; lobes acute 



or acuminate 26. Anisacan- 



[thus. 

 The following genera are also treated: Anisotes, Beloperone, 

 Dianthera, Dicliptera, Duvernoia, Dyschoriste, Lepidagathis, 

 Micranthus, Pseuderanthemum, Rungia and Warpuria. 



137. PEDALIACE^. 



A. Caps, truncate at apex, the angles awned or 



homed 1. Ceratotheca. 



AA. Caps, obtuse or acuminate, unarmed 2. Sesamum. 



139. GLOBULARIACEiE, or SELAGINACE^. 



A. Calyx 5-cut; the2posterior lobes of thecorolla 



narrow or connate or deficient 1. Glohularia. 



AA. Calyx cut down one side; posterior lobes of 



corolla 4 2. Heben- 



[streitia. 



138. ACANTHACEiE. 



A. Corolla expanded into a single obovate lip. 

 B. Calyx of normal texture; posterior segms. 



3-5-nerved 1. Blepharis. 



BE. Calyx usually cartilaginous; posterior segm. 



3-5-nerved 2. Acanthus. 



Jk. Corolla with subequal limb, or 2-lipped. 

 B. The corolla contorted. 



c. Ovary with 2 collateral ovules in each 



cell, or by abortion 1 3. Thunbcrgia. 



cc. Ovary with 2 to many ovules in each cell, 

 in 1 series or alternately placed one 

 above another. 

 D. Filaments connate in pairs at the base. 



E. Caps, subterete 4. Ruellia. 



EE. Caps, compressed parallel to the 



septum 5. Ds^dnlacan- 



DD. Filaments equidistant or aubconnate [thus. 



at the base in pairs; calyx-lobes 



obtuse 6. Sancfiezia. 



DDD. Filaments crowded or connate at the 

 base on the posterior wall of the tube 

 or 2 posterior filaments affixed a 

 httle higher. 

 E. Calyxampie, membranous or colored. 7. Whitfuhlin. 

 EE- Calyx-segm.s. linear, not colored. 



F. Ovules 2 in each cell 8. Strobi- 



[Uinthes. 



FF. Ovules 3 to many in each cell 9. Uemigra- 



BB. The corolla not contorted. [jjhis. 



c. Corolla of 5 flat lobes, not bilabiate. 

 D. Stamens 4, 



E, The corolla-lobes variously imbri- 

 cated, lateral ones usually outer. 



F. Anthers ail 2-ceIled 10. linrUrin. 



FF. Anthers all 1-relled 11. Cronsandra. 



EE. The anterior corolla-lobe outside, 

 posterior one inrnde. 



F. Anthers all 1-celled 12. Stenan- 



FF. Anthers all 2-celled (in Chama;ran- [drium. 



themum, the posterior anthers 

 wjmetimes 1-ceIlcd), 

 o, Tulxj swollen into a long or 



broad throat 13. Aaj/slasia, 



140. PHRYMACEiE. 



The only genus Phryma. 



141. MYOPORACEiE. 



Corolla more or leas bell-shaped, rarely funnel- 

 shaped, with a subrcgular limb; ovary 2- or 

 more-celled; cells 1-ovuled, rarely 2-celled and 

 2-ovuled Myoporum. 



142. VERBENACEiE. 



A. Infl. centripetal. 

 B. Fls. sessile in the spike. 



c. Nutlets 2, or by abortion 1, l-seeded. 



D. Fr. a juicy berry 1. Lantana 



DD. Fr. drupaceous: calyx 2— 4-cut or 



-toothed 2. Lippia. 



DDD. Fr. dry: calyx 5-toothed 3. Stachytar- 



cc. Nutlets or cells of fr. 4, or by abortion [pketa 



fewer, l-.seeded 4. Verbena. 



BB. Fls. pedicelled. 

 c. Nutlets l-seeded. 



D. Number of nutlets 4 5. Amasonia. 



DD. Number of nutlets 2 or 1 6. Petrsea. 



CC. Nutlets 2-seeded, in pyrenes 2-5, 2-lo- 



cellate 7. Duranta. 



AA. Infl. centrifugal. 



B. Fr. drupe-like, entire or 4-lobed, exocarp 

 usually pulpy or fleshy, the endocaip en- 

 tire or 4-eelled, often separating into 4 

 nutlets. 

 c. Corolla regular; stamens as many as 



petals 8. CaUicarpa, 



cc. CoroMii-limb obli'pie. with anterior lobe 

 proilucci], fjr Hutj-bilabiate; 3tamena_4, 

 di'lynuinous or arelied under posterior 

 lobes. 

 D. Drupe with one 4-celled stone. 

 E. Corolla-tube cyhndrical, short 9. Vitex. 



