KEY TO TREES AND SHRUBS. 



Coiie-bearing plants, or the so-called "evergreens" (li. 



Plants not cone-bearing; usually deciduous 4. page 



1. Leaves needle-shaped, 2-o in a sheath Finns. 17 



1. Leaves not in a sheath, very many in a cluster, deciduous Laiix. 17 



1. Leaves scale-like and adnate or free, and awl-shaped ;2 . 



I. Leaves not as above, scattered 3 . 



2. Leaves 2-ranked, fruit a cone with few scales Thuya. 18 



2. Leaves not 2-ranked, fruit a berry-like cone .Juniperous. 18 



:>. Leaves green both sides, 2-ranked Ta.vu.s. 18 



o. Leaves whitened beneath, petioled Tsiiiin. 18 



4. Leaves simple 25 . 

 4. Leaves cojupound o . 



5. Leaves of 2 leaflets and a branched tendril: tall climber Bignoiiia. 109 



T). Leaves tri-foliate or pinnately compound 7 . 



•^. Leaves palmately compound ;t> . 



(). Tree, leaves opposite, fruit large, dry ^^_^ .'Esciiliis. 1\) 



0. Vine, leaves alternate, fruit small berries.-. ^»Axt-!V.x.»*<«f T -.<?^ . -i^:«!«>'g I^rin's. 80 

 (i. Half shrub stems biennial , leaflets )! or .') Riibiis. (i4 



7. Leaves all trifoliate 9;. 



7. Leaves pinnate a few of them may be trifoliate 11 . 



7. Leaves hipinnate or decompound (a few may be simply pinnate ;s . 



8. Shrubs or small tree, the umbels in a large panicle 4ralia. Mi 



8. Tree, thornj-, leaflets small, leaves often pinnate Gleditschia. 09 



8. Tree not thorny, leaflets large, leaves very large Gymtiocladus. 09 



9. A climbing vine, sometimes small and erect; leaves alternate Rhus. 75 



9. A climbing vine; fruit plumose; leaves opposite Cleviatis. 4(i 



9. Half shrub biennial , trailing or nearly erect; leaflets o lor 5 Ruhiis. (U 



9. A straggling bush, leaves aromatic when crushed; leaflets ciU- 



toothed . Rh us. 75 



9. Strictly upright shrubs 10. 



1(1. Leaves opposite, fruit a bladdery pod, flowers in drooping 



racemes, white: branches greenish-striped..' Staph vlea. 77 



10. Leaves alternate, fruit surrounded by a wing; flowers in 



cymes ; branches not as above Piclca. 73 



II. More or less thorny or prickly 12 . 

 11. Not at all thorny or prickly 14 . 



12. Shrub; bark, leaves and pods aromatic, leaflets .5-9 Xauthoxyhiiii. 73 



12. Bark, etc., not pungent-aromatic 13 . 



13. Large tree with large mostly-branched thorns, fruit a po([. . .(j'l<di/schia. ()9 



13. Small trees or shrubs, prickly spines for stipules, fruit a pod Robiiiia. 71 



13. Shrubs with conspicuous adnate stipules, fruit fleshy rose-hip Rosa. (17 



13. Half shrubs biennial stems, fruit a blackberry or raspberry Ruhus. 64 



