72 



TEREEINTHACEiE. XVII. Rhus. 



24 R. Java'nica (Lin. spec. 380.) leaflets 5-7 pairs, ovate- rooting ; leaflets large, entire or rarely toothed, ovate. R, Toxl- 



oblong, acuminated, blunlly-tootbed, tomentose beneath; pe- 

 tioles submarginate ; panicle terminal, tomentose. 1? . G. Na- 

 tive of Japan and China, but introduced to Java. R. semial^ta, 

 A-ar. ft, Osbeckii, D. C. prod. 2. p. 67. 

 Java Sumach. Clt. 1799. Tree 30 feet. 



25 R. Chike'nsis (Mill. diet. no. 7.) leaves with 3 or 4 pairs 

 of leaflets ; petioles membranous, and are, as well as the 

 branches, clothed with downy villi; leaflets ovate, bluntly-ser- 

 rated. T2. G. Native of China. 



Chinese Sumach. Clt. 1800. Shrub 5 to G feet. 



26 R. Ame'la (D. Don, prod. fl. nep. 248.) leaves with 6-7 



codendron, var. a, vulgare, Pursh. fl. amer. sep. 1. p. 205. 

 Sims, bot. mag. t. 1806. Duh. ed. no v. 2. t. 48. Toxico- 

 dendron vulgare, Mill. diet. 



with 



the 



quality of not 



This plant having in common 



without the support of 



rismg 



a wall, tree, or hedge ; it is called in some parts of Ame- 

 rica creeping ivy. It will climb to the top of high trees in 

 woods, the branches every where throwing out fibres, which 

 penetrate the trunk of the tree which it grows on. When the 

 stem is cut it emits a pale-brown sap, of a disagreeable scent, 

 and so sharp that letters or marks made upon linen cannot be 

 got out again, but grows blacker the more it is washed. Like 



pairs of leaflets ; petioles with a narrow wing ; leaflets ellip- R, venenata it is poisonous to some persons, but in a less degree. 



tical, acuminated, serrated, sessile, odd one only stalked, all Kalm relates of two sisters, one could manage the tree without 



covered with greyish-down beneath, 



at Narainhetty. R. Bucki-ameh 



^2 . F. Native of Nipaul, being aflfected by its venom, while the other felt its exhalation 



Roxb. hort. beng. p. 22. as soon as she came within 3 feet of it, or even when she stood 



Flowers dioecious, disposed in large terminal panicles. Rerries to windward of it, at a greater distance ; that it had not the least 



Leaves 1-2 feet long. Buchi-amcla is the vernacular 

 name of the tree. 



silky. 



Biichu-Aviela Sumach. Clt. 1823. Tree 40 feet. 



effect upon him, though he had made many experiments upon 

 himself, and once the juice squirted into his eyes; but that on 

 another person's hand, which he had covered very thick with it, 

 27 R. PAUciFLORA (Lin. fil. suppl. 183.) leaves pinnate; pe- the skin a few hours afterwards became as hard as a piece of 



tanned leather, and peeled off* afterwards in scales. 



Var. ft, volubilis (D. C. prod. 2. p. C9.) stem climbing, 

 scarcely rooting ; leaflets ample, ovate. Toxicodendron volu* 

 bile, Mill. diet. 



Var. y, microcdrpa (D. C, prod. 2. p. G9.) leaflets oblong- 



tloles winged, covered with very fine villi ; leaflets alternate, 



wedge-shaped, serrated at the apex ; panicles sessile, few-flow- 



ered. 17. G. Native of the Cape of Good Hope. Thunb, fl. 

 cap. 2. p. 225. 



Allied to /?. 2>^^cijli)ra. 



Oi/i^ywe-leafletted Sumach. 

 29 



Clt. 1825. Shrub G feet. 



R. alaVa (Thunb. fl. cap. 2. p. 225.) leaves pinnate ; 

 petioles winged, tomentose ; leaflets alternate, ovate, serrated at 

 the apex ; peduncles axillary. l^ • ^' Native of the Cape of 

 Good Hope. 



/r//;^uc/-petioled Sumach. Clt. 1824. Shrub 10 feet, 

 30 It. coi'AllIxa (Lin. spec. 380.) leaves of 5-7 pairs of leaf- 

 lets, which are smooth above, and rather pilose beneath ; petioles 



Clt. 1640. 



Few-JloTvered Sumach. Shrub 6 feet. 



28 R. OBLfauA (Thunb. fl. cap. 2. p. 224.) leaves with many ovate, with long taper 'points ; fruit much smaller than in the 

 pairs of smooth, ovate, quite entire, dimidiate leaflets. Tj . G. two preceding varieties. R* Toxicodendron microcarpon, Pursh. 

 Native of tlie Cape^of Good Hope. Flowers and fruit unknown. fl. sept, amer, 1. p, 205. — Dill. elth. t. 291. f. 375. 



These two last varieties possess the same poisonous qualities 

 as the first, but in a less degree. 



Rooting Poison-oak or Sumach. Fl. June, July. 



Shrub creeping or climbing. 



33 R. toxicode'ndron (Lin. spec. 381.) leaflets deeply 

 angled or sinviated, pubescent. Tj . H. Native of North Anie 

 rica, along with R, radicans. R. Toxicodendron quercif^lium 

 Michx. fl. bor. amer. 1. p. 182. Pursh. fl. sept. amer. 1. p. 205. 

 Toxicodendron pvib^scens, Mill. diet. no. 2. According to 

 Nuttal, this is a truly distinct species from the preceding. P^^" 

 haps the T. serratum. Mill. diet, is a variety of this plant. 



The juice of this tree is milky when it nrs^ 



> 



winged, jointed ; leaflets elliptic, quite entire. J^ . H. Native of 

 North America, in dry fields and woods, particularly in a sandy 

 soil, from New Jersey to Carolina. Jacq. hort. schoenb. 341. 

 Pluk. aim. t. 5G. f. 1. Root stoloniferous. Flowers dioecious, 

 yellowish-green. Berries red. The leaves of this species chan'^e 



Flowers greenish. 



to purj)le in the autumn, and are used as tobacco by the Indians 

 of the Missouri and Mississippi. 



Var. ft^ IcuchUha (Jacq. schoenb. t. 342.) root not stoloni- 



exudes, but becomes jet black by exposure to the air. 

 poisonous to the touch. It was first tried as a medicine by D^; 

 Alderson of Hull, in imitation of experiments of M. Fresnoi, 

 with the Rhih radicans. He gave it in four cases of paralysis Ji^ 

 doses of half a grain or a grain three times a day, and all his 

 patients recovered to a certain degree the use of their hnibs. 

 The first symptom of amendment was always an unpleasan 

 feeling of prickling or twitching in the paralytic limbs. l^J' 

 Duncan has given it in larger doses without experiencing tn^ 

 31 R. TRi'juGA (Poir. diet. 7. p. 508.) leaves with 3 pairs of same success; it was not however inactive. In one case the 



patient discontinued its use on account of the disagreeable p^ick* 



feious ; flowers white ; panicles more contracted. 

 tivc of North America. 



I2.H. Na^ 



Leaflets many pairs, narrow. 

 Gum Copal'lUcc or Lentiscus-leaved Sumach. Fl. July, Aucr. 

 Clt. 1(JS8. Shrub 8 feet. 



coriaceous ovate leaflets, which are pubescent beneath ; petioles 

 flat, striated. ^ . S. Native of Brazil, at Rio Janeiro. Fruit 

 globose, shining. 



Tlirec-pairedAotiXQfi Sumach. Tree. 



' § 2. Toxicodendron (from rolUoy, toxikon^ poison, and t£v- 

 ^nov, dendron, a tree ; tree very poisonous). Totirn. inst. t. 381. 



ing it occasioned, and in general it operated as a gentle laxative, 

 notwithstanding the torpid state of the bowels of such patients. 



Common Poisou'trce or Poison-oak. Fl. June, July. ^'^* 

 1640. Shrub creeping upon walls or trees. ^ % 



34 R. Bahame'ksis; leaflets ovate, acuminated, entire, later 

 ones oblique at the base, pubescent beneath, especially on tn 



Mcrnch. mcth. 73. hut not of G<ertn. nor Thunh.—Pocophorum, """=* ^^^"i"? ^ '''^ .^^' puoesceni neneam, e.peca-, v,. 

 KrcL ehm. no. 9G4. Leaves mnnatelv trifoliate, nnth th. n.id. "^^^'^^ ' 1?^^'^^^^ ^^^ branches hairy; racemes axillary, ra 



Neck. clem. no. 9G4. Leaves pinnatehj trifoliate^ with the mid- 

 die leaflet stalked. 



32 R, RAPfcANS (Lin. spec. 381.) leaflets ovate, smooth, 

 entire. ^ . H. Native of North America, from Canada to 

 Georgia, common in all woods, fields, and along fences. Ber* 

 ries white. Flowers dioecious, greenish. 



Var. a, vufgdris (D. C, prod. 2. p. C9.) plant climbing and 



compound. Tj 



Native of the Bahama Islands. The plant 



is poisonous like the two preceding. 

 Bahama Poison-tree. ""' " 



Shrub cr. or c1. 



35 



^.. w^^. *-. Jun^, — J. , . 



R. LixEATiFOLiA (Ort. dcc. p. 89.) leaflets ovate, aciiminajj 

 ed, toothed, quite entire at the base, lined, with the edges ratne 

 villous, lateral ones on short stalks, middle one on a long stalK j 

 racemes axillary ; berries striped, f^ . S. Native of the Isian 



