KEY TO THE FAMILIES AND GENERA 



87 



10. BERBERIDACEiE. 



A. Venation or lobing pinnate; Ivs. penuiuerved, 

 pinnatisect, pinuately 2-3-ternate or decom- 

 poiind. 

 B. Ovules fen", erect from the base. 

 c. Plants are shrubs. 



D. Foliage-lvs. simple, often fascicled : 

 branches usually bearing reduced 



spine-lvs 1. Berberis. 



DD. Foliage-lvs. pinnate :evergreen branches 

 unarmed. 



E. Lfts. serrate: Ivs. simply pinnate 2. Mahonia. 



EE. Lfts. entire; Ivs. 2-3-pinnate 3. Nandina, 



cc Plants are herbs. 



D. Petals 6, reduced to small nectaries 4. Leontice. 



DD. Petals G, scarcely smaller than sepals 



and fiat 5. Leontice, § 



BB. 0\'ules placed ventrally in 2 series: herbs. {Bongardia. 

 c. Sepals 12-15; petals 0, reduced to nec- 

 taries 6. Vancouveria. 



cc. Sepals 8; petals 4, reduced to nectaries. ... 7. Epiftiediuni. 

 ccc. Sepals 7-S; petals 4, ahttle .smaller; flat... 8. AceranOmi*. 

 AA. \'enation or lobing palmate; Ivs. palminerved, 

 palmilobed, or 2-parted. 



B. Sepals 6; petahC: ovules in 2 series 9. Diphijlleia. 



BB. Sepals 6; petals 6-9: o\-ules in many series. ..10. Podophyl- 



[lum. 



BBS. Sepals 4; petals 8 11. Jeffersonia. 



BBBB. Sepals and petals 12. Achlys. 



The species of Caulophyllum may be expected in wild gardens. 



AA. Stigmas confluent: Ivs. alternate, ternately de- 

 compound: sepals 2; petals 4: phiccntie 

 remain attached to the margin of the valves. 

 B. Sepals coherent and covering fl. Uke a can- 

 dle-extinguisher 4. EschscholiZ' 



BB. Sepals separate. [ia, 



c. Lobes of stigma 2, erect 5. Dendrome~ 



[co/i, 



cc. Lobes of stigma 4, spreading 6. ffunne- 



AAA. Stigmas confluent: Ivs. alternate or mainly so: [mannia. 



fls. rarely 3-nierous: caps, dehiscing by pores 

 or valves, the placenta? remaining as a frame 

 alternate with and free from the valves. 



B. Caps, dehiscent by pores near the top 7. Papaver. 



BB. Caps, shortly dehiscing by valves. 



c. Stigmatic lobes radiating on the de- 

 pressed summit of a very short style. ... 8. Arjemone. 

 CC. Stigmatic lobes radiating on the club- 

 shaped top of a distinct style 9. Meconopsis. 



BBB. Caps, dehiscing by valves to the base or 

 nearly so. 

 c. The caps, long and linear. 



D. Seeds pitted '.10. Glaucium. 



DD. Seeds crested 11. Chelidon- 



cc. The caps, ovoid, oblong or cylindrical. (turn. 



D. Petals 4. 



E. Style distinct, but short 12. Styloph- 



[oTum. 



EE. Style long 13. Eomecon. 



DD. Petals 8-12 14. Sanginn- 



[aria, 

 DDD. Petals 15. Bocconia. 



Hypecoum is in the trade. 



11. LARDIZABALACE-ffi. 



A. Lvs. pinnate: upright shrub 1. Decaisjiea. 



AA. Lvs, digitate; twining shrubs. 

 B. Carpels 3, many-seeded, 

 c. Stamens monadelphous. 



D. Sepals 6; petals 6, much smaller 2. Lardizabala. 



DD. Sepals 6; petals 3. Slaiirtlonia. 



cc. Stamens free. 



D. Sepals 6; petals 6. 



E. Pedicels elongated; sepals acuminate; 



connective produced above the ^ 



anthers 4. Ilolbdllia. 



EE. Pedicels short; sepals rounded; con- 

 nective not produced; racemes very 



long 5. Sino/ranch- 



[etia. 



DD. Sepals 3; petals 6. Akebia. . 



BB. Carpels oo, 1-seeded; stamens free: lvs. 



deciduous. 7. Sargevto- 



[doxa. 



12. NYMPH.«ACE-ffi:. 



A. Fl3. small OA-l in.). 



B. Stamens 3-6: submerged lvs. dissected 1. Cabomba, 



BB. Stamens 12-25: lvs. all peltate 2. Brasenia. 



A A. Fls. large and showy (IJ2-I2 in.); sepals 

 4-5; petals and stamens °°. 

 B. Carpels in pits in a top-shaped receptacle.. . . 3. Nelumbo. 

 BB. Carpels forming a distinct many-seeded 

 ovary. 

 c. Plants prickly. 



D. Stamens, inner ones, sterile 4. Victoria. 



DD. Stamens all fertile 5. Euryaie. 



cc. Plants not prickly. 



D. Ovary wholly free and superior 6. Nuphar, 



DD. Ovary with stamens and inner petals 



inserted on it 7. Nymph.ra 



13. SARRACENIACEiE. 



A. Style umbrella-shaped 1. Sarracenia. 



AA. Style 5-cut at apex 2. Darlino- 



[tonia* 

 Heliamphora may be expected in choice botanical collectionH. 



14. PAPAVERACE^. 



A. Stigmas distinct: lvs. mainly opposite or 

 whorled: sepals usually 3; petals usually 6, 

 in 2 series: placenta never separate from the 

 valves. 



B. Lvs. lobed 1. liomneya. 



BB. Lvs. entire. 



c. Filaments dilated: stigmas os, linear: 



fr. not capsular 2. Platyntemon. 



cc. Filaments slightly dilated; stigmas 3, 



broader; fr. capsular 3. Platyntigma, 



15. FUMARIACE.^. 



A. Corolla 2-spurred or bigibbous, the 2 outer and 

 larger (lateral) petals similar. 

 B. Seeds crestless: petals permanently united 

 into a subcordate persistent corolla which 



incloses the ripe caps 1. Adlumia. 



BB. Seeds mostly crested: petals less or slightly 

 united into a 2-spurred or bigibbous 



corolla 2. Dicentra. 



AA. Corolla with only 1 of the outer petals spurred 

 or gibbous by torsion becoming posterior: a 

 nectariferous spur from the base of the fila- 

 ments projects into the petal-spur. 



B. Style mostly persistent 3. Corydalia. 



BB. Style deciduous: fl. smaller 4. FumaTia. 



16. CRUCIFERiE. 



A. The silique transversely 2-jointed. 

 B. Lower joint indehiscent pedicel-shaped, the 



larger joint globose, 1-loculed, X-seeded. . . 1. Crambe* 

 BB. Lower joint dehiscent, 2-valved, many 



seeded 2. Morisia. 



AA. The silique not 2-jointed, indehiscent. 



B. Siliques in pairs 3. Senebiera. 



BB. Siliques not in pairs. 



c. Texture horny or bony 4. Isatis, 



cc. Texture leathery, or membranaceous. 



D. Shape straight 5. Raphanus. 



DD. Shape curved , . . 6. Sobolews/cia. 



ODD. Shape orbicular 7. Peltaria. 



AAA. The silique dehiscent for its whole length 

 (except that some Brassicas are not dehis- 

 cent at the apex). 

 B. Valves markedly concave, compressed con- 

 trary to the septum, which is often very- 

 narrow; sihque short. 

 c. Cotyledons accumbent. 



D. Sts. leafy 8. Iberis. 



DD. Sts. scapes 9. llutchinsia. 



CC. Cotyledons incumbent. 



D. The valves usually wingless. 



E. Fls. rosy or violet 10. lonopsid- 



[ium. 



EE. Fls. white 11. Lepidium. 



DD. The valves winged 12. jEthionema. 



BB. Valves (transversely septiferous in Anastat- 

 ica), flat or concave, not compressed con- 

 trary to the septum (Smelowskia and cer- 

 tain Vesicarias are laterally compressed): 

 septum as wide as the valves; sihque long 

 or short. 

 c. Cotyledons longitudinally conduplicate. 



D. Seeds in 1 series 13. BrafJica, 



DD. Seeds in 2 series 14. Eruca. 



CC. Cotyledons accumbent (sometimes incum- 

 bent or convolute in Cheiranthus). 

 D. Seeds in 1 series (except certain species 

 of Radicula and Arabis: siliques 

 long and narrow (except in Anastatica 

 and sometimes Radicula and 

 Parrya). 



