112 



KEY TO THE FAMILIES AND GENERA 



130. SOLANACEiE. 



A,. Stamens didynamous. tho tifih (;\nd some- 

 times also one of the pairs) smaller, abor- 

 11%*? or missii));. 

 B. Number of perfect stamens usually 5. 



c The stamens affixed at middle of tube or 



lower 1. Petunia. 



oc The stamens affixed at apex of tube 2. Nierem- 



BB. Number of perfect stamens usually 4 or 2. [bergia. 



c Corolla-tuoe cylindrical; limb oblique; 



perfect stamens 2 3. Schisanthus. 



OC Corolla oblit]viely funnel-shaped; perfect 



stamens 4. ilidynamous 4. Salpigloaau. 



OOC Corolla-tube cylimlrical, straight; anthers 

 of the 2 short stamens dimidiate, of tho 



longer ones 2-celled 5. Browallia. 



CCCC CorolTa-tubet wasted; anthers as in Browal- 



Ua 6. Streptosolen. 



CCCCC. CoroUa-tube long, not twisted, sHghtly 

 widene<l at apex; 4 perfect anthers with 



confluent cells 7. Briuifehia. 



AA. Stamens all perfect not didynamous, nor- 

 mally 5. 

 B. Seeds little, if at all, flattened. 



c. Fr. a few-seeded berry 8. Cestrum, 



OC. Fr. a many-seeded caps. 



D. Corolla with a narrow tube and short 



spreading lobes 9. Fabiana. 



DD. Corolla funnel- or salver-shaped; Umb 



equal or oblique 10. Sicotiana. 



BB. Seeds flattened. 

 C. Fr. a caps. 



D. Corolla-lobes plicate. 



E. Caps. 4-ceUed, and 4-valved (some- 

 times indehiscent) 11. Datura. 



EE. Caps, circumscissile above the middle. 12. Scopolia. 



DD. Corolla-lobes imbricate 13. llyoscya- 



CC. Fr. berry-like, or at least indehiscent. [mua. 



B. Limb of corolla subequally plicate or 

 di\ided into valvate or indupUcate 

 lobes. 

 E. Anthers longer than filament, con- 

 nivent connate in a cylinder or 

 cone, acuminate at apex or dehis- 

 cent by 2 apical pores. 

 F. Connective variously thickened on 



back 14. Cyphoman- 



TT. Connective slender or obsolete. \dra. 

 G. The anthers acuminate, hollow 

 at tip, dehiscing by a longi- 

 tudinal crack 15. Lycopersi- 



GG. The anthers opening by an [ciim. 



apical pore which is sometimes 

 continued into a longitudinal 



crack 16. SolnnuTn. 



EE. Anthers free, with parallel cells, and 



dehiscing by a longitudinal crack. 



r. Stamens affixed above middle of 



tube 17. Salpickroa. 



FF. Stamens affixed near the base of 

 tube. 

 G. Corolla nearly rotate or broadly 

 bell-shaped. 

 H. Fruiting calyx hardly .en- 

 larged 18. Capsicum. 



HH. Fruiting calyx inflated or 

 bladdery. 

 I. Calyx cut shortly or to mid- 

 dle 19. Physalis. 



II. Calyx parted to base 20. Nicandra. 



GO. Corolla tubular or narrowly fun- 

 nel-shaped 21. lochroma. 



DD. Limb of corolla more or less imbricate, 

 flat and distinct or connected by 

 indupUcate sinuses. 

 E. The lobes imbricated from the base, 

 not plicate. 

 r. Plants woody. 



0. Berry with 4 stones, each 1-2- 



seeded 22. Grabowakia. 



GG. Berry with 2 cell3, each l-oo- 



se^ed 23. Lycium. 



FT. Plants herbaceous 24. Airopa. 



EE. The nouses of the corolla indupUcate 

 between the lobes. 



F. Calyx long and tubular 25. Solandra. 



FT. Calyx leafy, 5-fid, increasing in fr. .26. Mandragora. 



131. NOLANACE.^. 



Sincle genus. 



Nolana. 



132. SCROPHULARIACE^. 



Series 1. P**F-t-DOftOLAXfc.«:. Lvs. all alternate: infl. simple, 

 ientrir>*'tal; corolla hardly if at aU bilabiate; the 2 posterior looes 

 external in the bud. 



\. Corolla-tube short, somewhat bell- 

 shaped : American species 1. Leucophtllom 



(Tribe. 

 AA. Corolla subrotate: Old World Species... 2. Verbascum TmsE. 



Series 2. Antirrhinide.k. Lvs. prevailingly opposite, at least 

 the lower: infl. simple or compound, partially centrifugal, i.e., the 

 peduncle cyniosoly few- to several-fld. ; posterior lip or lobes of 

 corolla generally external in the bud. 



A. Corolla bilabiate; Ups inflated, concave. 3. Calceolaria 

 A A. Corolla bilabiate or nearly regular; ITribe. 



Ups nearly plane. 

 B. Corolla saccate or spurred. 



c. Tube wanting 4. Hemimbris Tribe. 



CC. Tube present 5. Antirrhinum 



BB. Corolla-tube not saccate nor spurred. ITribb 



c. Infl. centrifugal, cymose, usually 



compound, rarely sub-simple. .. . 6. Che lone Tribe. 

 CC. Infl. centripetal. 



D. Anthers 1-celled 7. Manulea Tribe. 



DD. Anthers 2-celled 8. Gratiola Tribe. 



Series 3. Rhinanthide.«. Lvs. various: infl. simple or com- 

 pound; corolla-lobes variously imbricated, the anterior or lateral 

 ones usually exterior. 



A. Anthcr-cells contiguous at apex and 



usually confluent; plants not parasitic. 9. Digitalis Tribe. 

 AA. Anther-cells everjrwhere distinct: plants 

 often root-parasitic. 

 b. CoroUa-lobes all flat, usually spread- 

 ing 10. Gerardia Tribe. 



BE. CoroUa with posterior Up erect, con- 

 cave or galeate; anterior Up often 

 spreading 11. Euphrasia Tribe. 



1. Leucophyllum Tribe. 



Corolla-lobes 5, subequal, spreading 1. Leucophyl- 



[lum. 



2. Verbascum Tribe. 



A. Stamens 5 2. Verbascum. 



AA. Stamens 4 3. Cdsia. 



3. Calceolaria Tribe. 



The only genus 4. Calceolaria, 



4. Hemimeris Tribe. 



A. Corolla more or less rotate, resupinate, the 



grooves inconspicuous or obsolete 5. Alonsoa. 



AA. CoroUa spread out flat, swoUen or saccate 



under anterior lip 6. Angelonia. 



AAA. Corolla flat or concave, with 2 basal spurs or 



pouches 7. Diascia. 



AAAA. Corolla-tube short with 1 spur or sac on the 



anterior side 8. Nemesia. 



5. Antirrhinum Tribe. 



A. Throat has a prominent palate. 



b. Corolla spurred 9. Linaria. 



BB. Corolla saccate or gibbous at base 10. Antir- 



AA. Throat has no palate. [rhinum. 



B. Caps, opens by 2 apical pores which are 



sometimes confluent 11. Anar- 



BB. Caps, opens by transverse holes or irregu- [rhinum. 



larly. 



C. Calyx ample, membranous 12. Rhodochiton. 



CC. Calyx smaUer, herbaceous 13. Maurandia. 



6. Chelone Tribe, 



A. Staminode often elongated. 



B. Caps. locuUcidally dehiscent 14. Tetranema, 



BB. Caps, septicidally dehiscent. 

 c. Fls. bilabiate. 



D. Anterior lip with middle lobe folded 



upon itself and inclosing the stamens. 15. Collinsia. 

 DD. Anterior Up of 3 flat spreading lobes. 



E. Seeds winged 16. Chelone. 



EE. .Seed not winged 17. Pentstemon. 



CO. Fls. with all the lobes flat, spreading and 



subequal 18. Russelia. 



AA. Staminode usually in the form of a scale at 



apex of corolla-tube 19. Scrophu- 



AAA. Staminode small, minute or 0. [laria 



B. Stamens usually exserted. 



c Calyx 5-parted: caps, tardily dehiscent. . .20. Phygelius. 



CC. Calyx cup-shaped: berry indehiscent 21. Ilalleria. 



BB. Stamens included; calyx 5-cut. 



c. Fr. an indehiscent berry 22. Teedia. 



cc. Fr. a loculicidal caps 23. Paulownia. 



7. Manulea Tribe. 



A. Calyx bilabiate or 2-parted 24. Zaluzian- 



[skya. 

 AA. Calyx 5-parted 25. Chitnoatoma* 



