^"«0 TEREBINTH ACE^. 127 



# * 



Foliis trifoliolatis, foliolo medio petiolato. 



4. K radicans; caule radicante, foliis 3-foliolatis, foliolls ovato-rotundatis rhomboi- 

 deisve acutis seu acuminatis glabris integris.— Zzwn. Sp. PL p. 381. Elliott^ Card, v, hp. 

 363. BipeL Med. Bot. t 42, FL Bost ed. 2. p. 120. De Cand, Prodr. v. 2. p, 69.— R. Toxi- 

 codendron, «. MicL Am, v. 1. p, 183. Pursh, B. Am. v. 1. p, 205.— R. Toxicodendron, 

 fi. Torrey, Fl. of Un, SL v. 1. /?. 322. 



xxn^a. -imuuguuuL v^auHua, xo lue oasKaicnawan. jjr. 



on " Mount Hood," and the " Blue Mountains." Douglas, 



America 



5. R, Toxicodendron; caule erecto debili, foliis 3-foliolatis, foliolis ovato-rotundatis 

 subrhomboideis acutis seu acuminatis iuciso-angulatis. — Linn, Sp. PL p, 381. Elliott, 

 CaroL v, 1. p. 363. De Cand. Prodr. v. 2. p, 69.— «. Torrey, Fl. of Un. St, v. 1. p. 323. 



-j8. quercifolia. Mich. Am. v. I, p. 183. Pursh, Fl. Am. v. \. p. 205. 



Hab. Canada; and, I believe, in the same localities as the preceding, Pursk; Mr. ClegJium; Dr. Rich' 

 ardson; Drummond; Douglas. — American Botanists are at variance with regard to the distinctive characters 

 of this and the preceding species. Nuttall says they are certainly different; but most other authors either 

 unite them, or speak with doubt as to the value of their presumed marks of distinction. 



6. R. iobata; caule stricto, ramulis brevibus folfosis, foliis trifoliolatis, foliolis ovatis 

 obtusissiinis varie lobatis, lobis obtusis, sinubus acutis, pamculls liixis petiolo longioribus. 

 (Tab. XLVI.) 



Frutex erectus, 3-4-pedalis, ramis teretes, junioribus solummodo pubescentibus, ramulis numerosis, 

 brevibus, pateutibus, folio&is. Folia longe petiolata, trifoUolata, foUoUs ovatis, unciam ad duas uocias longis, 

 obtu^simis, membranaceis, basi nunc acutis, nunc rotuudatis truucatisve, subtus praecipue pubescentibus, 

 profuude et varie lobatis, terminal! sublouge petiolulato, utnnque subsequaliter lobato, lobis prsecipuis sub- 

 tribus, foliolis lateralibus margine extcriori magis profuude lobato. Flores (masculiui) flavi, in racemis laxis, 

 folio brevioribus, petiolo longioribus. Bracteas ad basin ramulorum oblongse, ciliabe. Cah profuude 5-partitus, 

 laciniis oblongis. Petala 5, calycis laciniis multo loogiora, obovata, basi in unguem sensim atteuuata, dorso 

 venosa. Stamina 5, erecta, petalis parum brevkH*a. Filainenta subulata, Antherm majuscube, ovatse, 

 pallide flavae, leculis subappositis. Stylus parvus, e centro disci pateriformis, in fundo calycis siti, margine 

 elevato crispato. 



Hab. Common on the outskirts of woods, in dry soils of North -West America. Plentiful at Fwt -Van- 

 couver. Douglas. — Although nearly allied, as this assuredly is, to the two preceding species, I nevertbelesB 

 venture to consider it distinct. Its general habit is very different, having erect straight stemsy and numerous 

 smally leafy branches. The leaflets^ besides that they are deeply lobed, with acute sinuses, are truly ovate, 

 very obtuse, and greatly smaller than in any state of R. Toxicodendron , or R. radicans which I have seen : 

 the panicles, too, are exceedingly numerous, and large in proportion to the size of the leaf. 



Tab. XLVI. Fig. 1, Outside view o^a male flower; ///. 2, View of the upper side of^a male flower; Jfg. 

 3, Stamen; fg. 4, Petal; ^g. 5, Disk from the bottom of the calyx, aud style from the male flower:— 

 viagnijied. 



Sect. II. Lobadium. Raf 



7. R. aromatica ; foliis trifoliolatis, foliolis sessilibus inciso-crenatis subtus pubeiicen- 

 tibus, intermedio rhombeo, lateralibus ovato-rliombeis, floribus in amentis compactis 

 dispositis.— ^lY. Hort. Kew. ed. 1. v. h p. S67. Mich. Am. v. 1. p. 184. Pursh, FL Am. 

 V. 1. p. 205. Elliott, Carol v. 1. p, 364. Turpin^ in Ann, du Mm. v. 5. p. 445. t 30. 

 Torrey, FL of Un, St v. h p, 324. 



