II.\XIJBOOK OK TlIKKS OF TlIK XoRTHKI.'.X StATKS AM) ('aXAI)A. 441 



pi'tals n. wiiitt'. siji-oadiiig. dccidiKnis : stamens nuiiicidiis. iiiscrtrd willi ilie pdals on the 

 calyx, with fi'ee iilifuria fUaiiiciits and oval 2-seeded antluM-s : i)istil s<ilitar.\ with l-rclled 

 ovary, single tcnninal stylo, capitate stigma: ovules 1*, suspended. I'ndl a l-seeded drupe 

 with horny comi)iessed jjit. the seed suspended : cotvledons fleshy. 

 The name is the ancient Latin name (.f the J'luin-trc-. 



Ki:V TO TIIIO SI'KCIKS. 

 a I'Mowers in axillary umbels expandin.u with or Itel'die tiie leaves: jiit more or less flattened 

 b Petioles rather slender and lonj; {Bird ClnrrKs) 

 c Fruit mostly K; in- or more in diameter 



Leaves pubescent beneath : fruit sweet P. Avium. 



lieaves glabrous ; fruit tart P. Cerasiis. 



c" Fruit about % in. in diameter, \-ery sour P. Pennsylvanica. 



b- Petioles stout and short il'liiiiis) 



c Fruit red or yellow and about 1 in. ov less lonu : leave; a!)ruptly acuminate ami 

 d (_)bovate-oblonK, thicUish, dull and \eins impressed : calyx-lojes 



(ilabrous inside : ])it much compressed P, nigra. 



Pubescent inside : pit turgid P. Americana. 



d- Ovate-lanceolate to lanceolate, thinnish : pit turgid: calyx-lobes 



Pubescent both sides; fruit austere with thickish skin... P. hortulana. 



Cilabrous ; fruit with thinnish skiu P. angustif olia. 



c" Fruit dark blue with blodin ; lea\-es ovate and petioles mostly without ulands. 



P. Alleghaniensis. 



a- Flowers in terminal corymbs appearing after the leaves P. Mahaleb. 



a' Flowers in racemes terminating leafy brauchlets; leaves linely serrate 



b With slender spreading teeth : leaves thinnish P. Virginiana. 



b- With incurved callous teeth : leaves thickish P. serotina. 



a' Flowers mostly solitary; leaves oblong-lanccdlali^ ; fruit velvety... P. Persica. 

 For .species see pp. .^<iJ-JS.i <ind the foUoiriiKj : 

 I'EACii. Pnonis Persica (L.) S. »S: Z. {Ainijydalus Persica L. ). The Peach was early 

 introduced into this country from Europe, coming originally it is thought from China, and 

 is found naturalized in localities from southern N. Y. southward. It is a small tree, occasion- 

 ally 1 ft. in diameter, with bark exfoliating in laminate scales. . Lea res lanceolate to lance- 

 oblong, 4-G in. long, tapering about equally to both ends, serrate, glabrous ; petioles stout, 

 i/t in. long. Floivers appearing before the leaves, solitary, pink, A'arying in size from 1-2-2 in. 

 broad, scaly-bracted. Fruit a subglobose grooved drupe, velvety-tomentose. with very hard 

 deeply' pitted stone. 



PULSE OR PEA FAMILY. LEGUMINOS.E. 



A very large and imiioitant family of trees, shrubs and herbs of wide distribution 

 throughout all temperate and tropical regions, generally free from obujxious properties and 

 many of its representatives of the greatest economic importance. There are about 7,000 

 species grouped in nearly 4."i() genera, and of these seventeen have arborescent representatives 

 in the United States. 



Leaves alternate, usually compound, with stipules. Floivers regular or papilionaceous 

 and usually perfect; stamens 10 or many, with diadelphous (sometimes distinct I filaments 

 and 2-celled anthers opening longitudinally ; pistil solitary, with one or several-celled superior 

 ovar\'. Fruit a legume. 



KEY TO THE GEXFUA. 

 a Flowers regular or imperfectl.v papilionaceous; lobes imbricated in a'stivat ion ; stamens 

 with distinct filaments; seeds albumeuous ; flowers 

 b Imperfectly papilionaceous, perfect; legume thin and flat: leaves simple. 



Cercis. 

 b" Regular, dion-ious or i)olygamous : leaves 



P»i])innate; calyx-tube elongated; stamens 1(»; peds tliiik Gyninocladiis. 



Both pinnate and bipinnate : stamens 3-.1 : pods thin Gleditsia. 



a- Flowers papilionaceous: seeds usually without albunien ; leaves oiice-iiinnate : stamens 



b ] >isi iuct ; flowers in long loose panicles Cladrastis. 



b- I)iadeli)hous ; pod thin and flat : stiiniles spinesceiit Robinia. 



THE RED-BUDS. Gkxu.s CERCIS L. 



Small trees and shrubs <if seven siie<ies. three of which are natives of North America 



and the (ithers of Fiircipe and Asia. Oi' the three Xnrth .Vmerican species one is a Californian 



shruh. aiKither is a small tree of the basin of the IJio Oraiide in Texas and southwaril. and 



the third is widely distributed in the middle and eastern states. 



L-ans simple, deciduous, broiul. with ."-7 promineiil vei 

 terete, slendi'r and enlarged near the leaf-blade; stipules 



