118 



RUTACE^ [Zanihoxylum, 



Hab. Canada. Lake Huron. I>r. TocW. About Montreal and Quebec ; iM!r5. Percttw/; itfrs, >SA^j?ar£?; 

 Mr, Cleghom; and as far north as the Saskatchawan. Dr, Richardson ; BrumnioiuL 



S. O- stricta; caule erecto folioso, pedunculis umbelliferis 2-6-fIoris folii circiter 

 loiigltudine, stipulis obsoletis, foliolis obcordatis, petalis integris, stylis staminum interi- 

 orum longitudine. — Linn, Sp. PL p, 694. Jacq, Ox, t 80, f. 2, Mich, Am, v, 2. p, 39. 

 Pursh^ Fl, Am, v, 1. p, 322. Elliott^ Carol, v. h p. 525. De Cand, Prodr, v. 1. p, 692. 

 Torrefy 12, of Un, St, v, I, p, 462. Bigel, PI. Bost, ed, 2, p. 258, 



Hab. Dry soils in upland woods in the interior, west of the Rocky Mountains. Douglas, 



* * AcetoseUce, DC, 



3. O. AcetoseUa ; acaulisj radice dentata repente, foliolis obcordatis puberulis, scape 

 folio longiore supra medium bibracteolato, petalis ovalibus obtusis, stylis stam. interiora 

 aequantibus aut superantibus, — Linn, Sp, PI, p, 700. Engl, Bat, t 762. Mich. Am, v, 2. 

 p. 38. Pursh, Fl, Am. v. \. p, 322. De Cand, Prodr. v, I, p. 700. Torrey, Ft. of Un. St. 

 V, 1. p, 461. Bigel Fl, Bost. ed. 2, p, 257. 



Hab. Canada. Pursh; Mrs. Sheppard; Mrs. Percivah Lake Huron. Dr. Todd. North -West coast 

 of America, in woods, frequent. Douglas; Dr. Scoule?; — The specimens from the North -West coast have 

 unusually long and branched subterraneous stems. 



4. O. trilliifoKum ; acaulis, pedunculis umbelliferis petiolum eequantibus, foliis ternatis 

 foliolis obcordatis glabris, stylis staminum interiorum longitudine. — O. macrophylla. 

 Douglas^ MSS. in Herb, Hart, Soc. (non Kunth.) 



Hab. " North -West America, on the summits of the high mountains near the ' Grand Rapids ' of 

 the river Columbia; and also in the vallies of the Rocky Mountains, on moist decayed vegetable soil." 

 Douglas. — *' Petiole equal on length with the scape, from 6-12 inches high. Leaves glabrous, very large, and, 

 when the plant is out of flower, they may almost be taken for those of Trillium grandiflorum." Douglas. 



Ord. XXV. RUTACE^. Juss, 

 Trib. DiosMEiE. De Cand. 



1. ZANTHOXYLUM. Humb. et Kunth. 



Flores hermaphroditi aut abortu dioici aut monoici. Cal, 3-9-lobus saepius 4-5-par- 



titus. Pet tot quot calycis lobi, interdum basi connata aut libera, abortu ssepe ad 



minorem numerum reducta imo interdum solitaria, matura bivalvia 1-3-sperma. Semen 



nitidum. [Gcertn,) — Frutices arboresve scBpe aculeati. Folia scepiua alterna, scepe pwnc- 



tato-glandulosa, DC, 



1. Z,fraxineum; foliis imparl-pinnatis 3-5-jugis, foliolis ovatis obsolete serrulatis basi 

 sequalibus, petiolis teretibus inermibus, aculeis stipularibus, umbellis axillaribus. DC, 

 Willd. Sp. PL V, 4. p, 757. Pursh, Fl. Am, v. 1. p, 210. De Cand. Prodr. v, 1. p. 727. 

 BigeL FL Bost ed. 2. p. 376.— Z. ramiflorum. Mich, Am. v, 2, p, 235. 



Hab. Canada. Michaua:. " La Grande Chaudie're." Pursh, 



2. Z,tricarpum; foliis impari-piimatis 3-5-jugis, foliolis petiolulatis oblongo-ovalibus 

 acuminatis serrulatis basi obliquiis, petiolis ramisque aculeatis, paniculis terminalibus. 



