it.; 



ORDER XXXVI. ACERACE.E MAI'I.K-THIHK. ORDER XXXIX. KIIVMNACKfi BUOKTHOBN-TBIBE. 



common petiole winged , flower* greenish, In thynol.l, sessile, terminal pani- 

 cles ; drupes red, hairy, add. A smaller shrub thin tin* last, In rocky, barren 

 grounds. July. 



4. R. yenenata. Doytcood, Poison Sumach. 



Ycrjr glabrous; leaflets T IS, mostly oral, entire, abruptly acuminate; 

 common petiole not winged, ro.l ; flowers very small, green, mostly dtodons, 

 In loose, axillary, pedunculate panicle* ; drupes subglobose, smooth, greenish, 

 u large ai pea*. A very elegant shrub. In swamp*, with loaves of a shining 

 greea, 1015 feet high, and exceedingly poisonous to most persona, producing 

 eruptions on the akin, when touched, and In tome cases even when approached 

 very nearly. June. 



5. R. toxicodendron. Poison-Oak, Poison-Ivy. 



Stem erect, or decumbent ; leaves pubescent, tcrnst* ; leaflet! broad-oval, or 

 rhomboid, acuminate, entire, or plnnately-toothcd ; flowers green, In racemose, 

 axillary, snbaesstlfl panicles; drupes subgloboec, smooth, pale brown. A low 

 ahrnb 18 feet high, poisonous, but less so than the last 



Tar. Radlcana, Leaflet! entire, mostly smooth ; stem long, climbing by 

 radicle", often SO 30 feet, or more. This variety, by some authors considered 

 a species. Is very distinct in habit, and In N. Eng. Is by far the most common 

 fnrm, If Indeed the other be found there at all. Junr. 



6. R. Cotinus. Smoke-tree. 



Leaves obovate, entire; flowers mostly abortive, minute, In terminal com- 

 pound panicles ; pedicels finally elongated, and clothed with long hairs. A 

 shrub 6 feet high, not uncommon in cultivation, chiefly remarkable fur the 

 peculiar appearance of Us panicles, which cause the plant to look, at a distance, 

 as If enveloped in a cloud of smoke. 



ORDER XXXVI. Aceracess. Maple-tri!><. 

 i. ACER. 



Flowers mostly polygamous. Calyx 5-cleft. Petals 6, or 

 none. Stamens 7 10, rarely 6. Styles 2. Samaras 2, wiugcd, 

 united at base, by abortion 1-seeded. 



1. A. rrtbrum. Red Maple. 



Leaves palmate, 8 5-lobed, mostly cordate at base, unequally or indsely- 

 toothed, whitish, and nearly or quite smooth beneath ; lobes acute or acumi- 

 nate ; sinuses acute ; flowers crimson, rarely yellowish, on short pedicels, aggro- 

 gate, about 5 together; pedicels In fruit elongated and pendulous; fruit red, 

 with wings about 1' long. A tall, handsome tree, common In low grounds and 

 swamps. It makes a splendid appearance In April, before tho leaves come out, 

 when covered with Its numerous crimson flowers. 



2. A. dasycarpum. Wftite Maple. 



Leaves deeply 5-lobed, mostly truncate at base, sometimes cordate, white, 

 and smooth benca'i; sinuses obtuse; lobes acute, or acuminate, unequally or 

 Ineisely-tootlied, entire toward the base; flowers small, yellowish-green, In 

 crowded, simple umbels ; pedlIa short and thick; petals none; fruit tomcu- 

 toM when young, nearly smooth when old, with very large upwardly dilated 

 diverging wing*; pedicels elongated In fruit. Distinguished from the hut, 

 which It much resembles, by Its larger leaves and fruit, and yellowish short- 

 pedlcclled flowers. Wood while, soft Bap less sweat than that of the Sugar 

 Maple. April 



3. A. saccharinum. Sugar Maple. 



Leaves palmately-lobcd, cordate at base, or truncate, glaucous, pubescent or 

 smooth beneath ; sinuses obtnne and shallow ; lobes acuminate, with a few 

 coarse, repand teeth ; flowers pal* yellow, on long, pendulous, filiform, vll- 

 l<m pedicels; sepals bearded Inside; petals none; fruit yellowish, with wings 

 I' long. A noble tree of the most elegant foliage and growth, very often culti- 

 vate.! a* a shade Inc. Its sap yields that universal favorite, Maple Sugar. 

 Rocky woods. Jfay. 



4. A Pcnnaylvanicum. Moose-wood. 



Love* snbcordato at base, g-l<>bed at summit, sharp y and doubly scrrato, 

 smooth; lobe* acuminate; flowers large, yellowish-green, In simple, nodding 

 nctmus; p*UI* oborale ; fruit la long clusters, glabrous, with pale green, di- 

 verging wings. A small tree, 10 IB feet high, the bark striped with green and 

 Common In V.vtliem N. Kng n.l N. Tnrk, rare further South. May. 



5. A. Bpicatum. Mountain Maple. 



Leaves pubescent beneath, somewhat cordate at base, 8 5-lobed. dental* 

 small, rough ; lobes acuminate ; flowers very numerous, minute, gro. 

 erect, compound racemes; petals llncar-spatnlatc ; fruit almost smooth, with 

 wings slightly diverging, In pendulous racemes. A shrub. A 10 feet high, 

 found In about the same localities as the last Juiu. 



ORDER XXXVII. ]Ii|i|)ocastanace8B. Horse- 



< 1 li, \-linit-f\linily. 







Calyx campanulate, tubular, 6-toothed. Petals 4 5, more or 

 less unequal. Otherwise as in the character of the order. 



1. ./E. Ilippocastanum. Horse-Cliestnut. 



Leaves digitate ; leaflets T, obovate, abruptly acute, serrate ; flowers large, 

 In pyramidal thyrses or racemes, pink and white ; stamens and styles longer 

 than the petals; fruit large, dark chestnut colored, not eatable. A noble tree, 

 4080 feet high, admired for It* elegant growth and foliage, as well as for in 

 showy flowers. Jtitif. 



ORDKR XXXVIII. Celastracesa Staff-tree- 

 family. 



1. CKLASTBUa 



Flowers sometimes dioecious or polygamous. Sepals 6, united 

 below into a very short tube. Petals 6, sessile. Capsule snbglo- 

 bose, 2 3-celled. Seeds arilcd, 12 in each cell. 



1. C. scandens. 



Shrubby liitd r?v - 1. 



Stem woody, twining; leaves oval, or somewhat obovate, acuminate, ser- 

 rate, alternate, stipulate, smooth ; flowers small, greenish-white, In nearly sim- 

 ple racemes; seeds reddish-brown, covered with an aril, which at first Is 

 orange, but afterwards becomes scarlet A climbing, woody plant, In woods, 

 thickets, and along stone walls. Jam. 



ORDKK XX XIX. EUuunnAoeffi. Jitii-'kihorn- 



fribe. 



1. RHAHNTJS. 



Calyx urceolatc, 4 5-clcft, Petals 4 6, cmarginate, pcrigy- 

 nous. Ovary free from the calyx, 2 t-celled. Styles 24, 

 more or less united. Fruit drupaceous, containing 24 inn-. 



1. R. cutharticus. liuckthorn. 



Leaves orate, doubly serrate, acute, strongly veined, nearly smooth, alter- 

 nate. In bsdcles at the ends of the branches. In young, rapidly-growing shoots, 

 often somewhat opposite ; flowers polygamous, In axillary fascicles, mostly te- 

 trandrons ; sepals at length rcflexod ; petals entire ; fruit black, globose, nau- 

 seous, and cathartic. A shrub, 10 IS feet high, with opposite branchea 

 splnose at summit Not uncommon In Eastern N. Eng. Road-sides. Jutw. 



2. R. alnifulius. .!/'/< r-lm ml Buckthorn. 



Erect, unarmed; leaves oval, acuminate, serrate, pubescent on the veins 

 beneath ; peduncle* 1-flowered, solitary or aggregate, arising from tue upper 

 part of the young shoots; flowers yellowish-green, mostly pentandrous and 

 apetalons; sepala acute, *pccadlng ; si) les 8, united, very short; fruit turblnate, 

 black, as latgo as a currant, S-seeded. A low shrub, 8 feet high, In dens* 

 swamps, not uncommon In the northern parts of N. 1 ng. and N. York. Jlfoy 



J. CEANdTlM I 



Calyx cmnpnnulatc, 5-cleft; the upper portion nt length 

 separating in a transverse line. Petals 5, longer than tliv cnlyx, 

 saccate and arched, with long claws. Stamens exscrt. siyl<> 

 mostly 3, united as far as the middle, separate alrav. Krnit 

 dry, coriaceous capsule, obtusely triangular, 3-celled. 3-seeded. 

 snrmunil"l ' ''''*" by Hie persistent calyx-tube. 



