Trees of .\< ir Yorl: State 381 



Leaves alUTiuitc. (k't'iduous, siiii|ilc, inaiiil.v cordate and inequilateral at 

 the base, serrate, long-petiolate. Flowers i)erfeet, pale yellow, fragrant, 

 uecturiforous, borne on slender clavate pedicels in axillary or terminal c-ynies, 

 the stalk uf the cyme in part adnate to the axis of a ligulate or oV>ovate, pale 

 green, membranoius bract; sepals 5; petals f), alternate with the sepals, creamy 

 white; stamens numerous, 5-adolphous, each cluster (in the American spe- 

 cies) united with a petal-like scale opposite each petal; filaments forked at 

 the apex, each fork bearing a half-anther; pistil consisting of a sessile, tomen- 

 tose, 5-celled ovary surnioimted by a columnar style and 5 spreading stigmatic 

 lobes. Fmit uut-like, woody, subglobose to ovate-oblong, 1-celled by abortion 

 and containing 1-2 albuminous seeds; cotyledons palmately o-lobed. 



KEY TO THE SPECIES page 



1. Leaves glabrous below T. americana 307 



1. Leaves pubescent or hoary-tomentulose below 2 



2. Leaves stellate pubescent below, with conspicuous axillary tufts of hairs. 



T. :\Iichauvii 3:)9 



2. Leaves hoary white-tomentulose below. . . .T. heterophylla, var. iSIichauxii 311 



GINSENG FAMILY. AKALIACEAE 



Trees, shrubs, or herl)s, with watery juice, alternate compound 

 leaves, racemose or panicletl umbels of flowers, and ])accate fruit. 

 A large family of about fifty genera and five hundred species, 

 mainh' confined to the tropics with a few genera extending into 

 tlie northern li('mis])liei'e. Aralia is rei)resented by four species 

 in New York State, one of which l)ecome.s a small tree. 



LeavLS alternate, deciduous, cohi[>omid, petiolat*, mainly stipulate. Flowers 

 perfect or polygamous, regular, 5-nierous, in racemose or panicled umbels; 

 calyx adnate to the ovarj', .5-lobed; petals 5 or 10, inserted on the margin of 

 the calyx; stamens 5 or 10, alternate with the petals; pistil consisting of an 

 inferior 2-5-celled ovary surmounted by 2-5 stj'les and simple stigmas; ovules 

 one to each cell. Fruit a 2-5-seeded, baccate drupe; seeds exalbuminous. 



HERCULES' CLUB. Genus ARALIA (Tourn.) L. 

 Aromatic spiny trees or shrubs with stout pithy branches, and 

 bristly or glabrous perennial herbs. The genus comprises about 

 thirty species and is confined to North America aild Asia. Aralia 

 spinosa L. is the only North American species which becomes 

 arborescent. 



Leaves alternate, pinnntely or ternately decompound, the petioles enlarged 

 and clasping at the base; stipules present. Flowers perfect or polygamous, 

 small, greenish white, 5-nierous, borne on slender, jointed pedicels in umbels 

 or panicled umbels; . calyx-tube adherent to the ovary, the lobes minute and 

 valvate; petals ovate, imbricated in the bud; stamens alternate Avith the 

 petals, with filiform filaments and oblong or ovate anthers, inserted with the 

 petals on the margin of the disk; pistil consisting of an inferior 2-5-celled 



