Impatiens. RUTACE^. 369 



I. aurea, Muhl. (Pale Touch-me-not.) Sometimes 5 or 6 feet high, mostly light green : 

 leaves often 3 to 4 inches long, mostly exceeding their petioles, paler below, elliptical, 

 coarsely crenate-serrate, rounded or acute at base, the apex and some teeth occasionally 

 mucronate : bracts ovate, acute : flowers rather large, pale yellow, usually little mottled, ex- 

 ceptionally pinkish or white : the saccate sepal broadly conical, scarcely longer than broad, 

 its slender spur short (2 to 3 lines in length), abrupt, refracted at base, the end notched. — 

 Cat. 26. /. pallida, Nutt. Gen. i. 146; Torr. & Gray, Fl. i. 208; Trelease, 1. c. 99. —Canada 

 to the Saskatchewan, south to Kansas and North Carolina ; also in Oregon, Lyall. 



I. biflora, Walt. (Spotted Touch-me-not.) Two to four feet high, somewhat orange- 

 or purple-tinted and a little glaucous : leaves smaller, usually 2 or 3 inches long : bracts 

 narrow : flowers orange or occasionally pinkish, usually copiously mottled with reddish 

 brown : the saccate sepal evidently longer than broad, its slender spur long (4 to 5 lines), 

 rather abrupt, flexuously recurved : otherwise resembling the last. — Car. 219 ; Willd. Spec. 

 i. 1175; Pursh, Fl. i. 171 ; Rcem. & Schult. Syst. v. 349; Ell. Sk. i. 304. I. fulva, Nutt. 

 Gen. i. 146; Hook. Fl. Bor.-Am. i. 117 ; Torr. & Gray, Fl. i. 209; Gray, Gen. 111. ii. 135, 

 t. 152, 153 ; Trelease, 1. c. 99. /. waculata, Muhl. Cat. 26. /. nolitangere, 0, Michx. Fl. ii. 

 149. — Newfoundland to Washington, south to Kansas and Mississippi. (Introd. into 

 England.) 



I. nolitangere, L. (The true Touch-me-not.) Leaves larger, often more strikingly serrate, 

 sometimes cordulate : flowers clearer yellow : saccate sepal larger and still more elongated, 

 gradually tapering into the long recurved spur which usually is not notched at tip. — Spec. 

 ii. 938; Eeichenb. Ic. Fl. Germ. v. t. 198 b; Ett. & Pok. Physiotypia PI. Austr. x. t. 925.— 

 Noosack River, Washington, Suksdorf. (Introd. from Eu.) 



Oeder XXXIII. RUTACE^. 



By a. Gray ; the genera Citrus and Amyris revised by L. H. Bailey and B. L. 



Robinson respectively. 



Woody or rarely herbaceous plants, punctate with oil-glands in the form of 

 pellucid or dark dots in the leaves, petals, &c., or as pustules, these charged with 

 essential oil (graveolent, pungent, or aromatic). Leaves destitute of stipules, 

 except prickles. Flowers 4-5-merous, mainly regular and mostly symmetrical. 

 Stamens as many or twice as many as the sepals (imbricated in the bud) and 

 petals or occasionally more numerous, inserted on or mostly around a hypogynous 

 disk. Anatropous or amphitropous pendulous ovules two or more in each cell 

 or carpel. Embryo straight or curved, either filling the seed or large in propor- 

 tion to the albumen. — Order largely represented in the tropics and in the 

 southern hemisphere, feebly so in North America, and the larger tribes absent. 

 The characteristic dots are obsolete or wanting in one or more coriaceous-leaved 

 species of Xanthoxylum. 



RuTA GRAVEOLENS, L., the commou Rue, of the Old World, a familiar denizen of gardens, 

 is of a group represented in N. America by Thamnosma. 



DictAmnus Fraxinella, L., of Europe, which has somewhat irregular flowers and a 

 5-lobed ovary, in fruit becoming as many nearly separate and 2-valved carpels, is common in 

 old gardens. 



Tribe I. RUTE^. Heavy-scented herbs or suffruticose plants, with strictly her- 

 maphrodite flowers. Ovules several (3 to 20) in each cell or carpel. Embryo 

 surrounded by fleshy albumen, more or less curved, except in Dictamntis. 



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