26 American Midland Naturalist Monograph No. 2 



13. Leaflets 11-41, entire except for two or more coarse teeth at the base, 

 lanceolate or ovate-lanceolate, 7-15 cm. long; leaves 20-90 cm. long, 

 ill-scented; flowers small, greenish, polygamous, in erect panicles 

 10-30 cm. long; samaras 3-4 cm. long, twisted, with the compressed 



seed in the middle 92. SiMARUBACEAE 



13. Leaflets with numerous teeth. 



14. Stipules none; flowers greenish. 



15. Trees; staminate flowers in catkins; fruit a nut. ...40. JUGLANDACEAE 



15. Shrubs; flowers in panicles; fruit a drupe 98. AnacardiaceaE 



14. Stipules present (sometimes soon disappearing); flowers not green or in 



catkins 83. RosACEAE 



1 . Leaves 2-3-compound. 



16. Petioles and midribs often with small prickles; leaflets ovate, acute, serrate to 

 entire; flowers small, white, in umbels; drupes numerous, small, black, ovoid; 



shrub or small tree with prickly branches Aralla spinosa in 118. Araliaceae 



16. Petioles and midribs never spiny; fruit a legume. 



17. Leaflets 12-28, obtuse, 2-3.5 cm. long, remotely denticulate; trees, usually with 



spines on the trunk and branches Cleditsia in 84. Leguminosae 



17. Leaflets 30-60, acute, 4-8 cm. long, entire; trees without spines 



C^mnocladus in 84. LegUMINOSAE 



Section 14. Trees or Shrubs (Including Woody Climbers) 

 With Alternate Simple Entire Leaves 



1. Branches or stems more or less prickly or spiny. 



2. Leaves usually with a pair of tendrils at the base of the petiole 



Smilax in 31 . LiLIACEAE 



2. Tendrils absent. 



3. Leaves ovate or ovate-lanceolate, acuminate; twigs with sharp spines; flowers 

 small, greenish, dioecious; fruit yellow, as large as a grapefruit; trees with 



milky juice Madura in 44. MoRACEAE 



3. Leaves oblanceolate or lanceolate, often fascicled on short lateral branchlets. 

 4. Trailing or climbing shrub with arching or spreading light gray angular 



branches; flowers greenish purple; berries red, many-seeded 



Lyciitm in 1 36. Solanaceae 



4. Erect shrub or small tree; flowers white; drupe black, 1 -seeded 



122. Sapotaceae 



1. Plants without spines or prickles. 

 5. Plants prostrate or climbing. 



6. Stems prostrate; tendrils none 120. Ericaceae 



6. Stems climbing or twining. 



7. Tendrils usually present at base of petioles; flowers in umbels, greenish; fruit 



a berry Smilax in 31. LiLIACEAE 



7. Tendrils none; flowers axillary; leaves cordate; fruit a capsule 



49. Ari.stolochiaceae 



5. Plants erect; trees or shrubs. 



8. Leaves cordate, palmately veined, acute; pods 6-8 cm. long; shrub or small tree 



Cercis in 84. Leguminosae 



8. Leaves not cordate. 



9. Leaves bristle-tipped Qiiercii.s in 42. Fagaceae 



9. Leaves not bristle-tipped. 

 10. Stipules usually present. 



11. Flowers large, greenish or yellowish, solitary; trees 



60. Magnoliaceae 



1 1 . Flowers not as above. 



12. Mowers in catkins; fruit a capsule 38. SalicacEAE 



12. Flowers axillary; fruit a drupe 102. RhamnaceaE 



10. Stipules none. 



