94 NORTH AMERICAN FLORA [Volume 25 



Annual ; stem usually light-green, glabrous, 1-2 m. high, branched ; petioles 1-5 cm. 

 long ; leaf-blades thin, bright-green, somewhat paler beneath, oval or ovate, 3-15 cm. long, 

 2-9 cm. wide, crenate-dentate, with rounded or obliquely triangular, mucronate teeth ; inflo- 

 rescence 3-5 cm. long, 3-5-flowered ; bracts lanceolate, about 5 mm. long ; lateral sepals 

 broadly ovate, acuminate, light-green, 5-7 mm. long ; posterior sepal light sulfur-yellow, 

 usually unspotted or with minute reddish or brownish dots, broadly conic, about 15 mm. 

 long and fully as wide ; spur bent at a right angle, 3-8 mm. long, usually notched ; petals 

 of the same color as the spur or lighter, usually more dotted, the anterior one broadly obo- 

 vate, emarginate, 7-8 mm. long, about 10 mm. wide ; lateral petals oblong, nearly 1 cm. 

 long, half-united with the posterior ones, which are broadly obliquely spatulate and nearly 

 2 cm. long; pod clavate, acute at the apex, attenuate at the base, about 2.5 cm. long and 

 5 mm. thick. 



Type locality : Vicinity of Philadelphia. 



Distribution : River banks and wet grounds, from Nova Scotia to Georgia, Kansas, and Sas- 

 katchewan. 



Illustration : Britt. & Brown, 111. Fl. 2 : /. 23S9 (as /. aurea). 



2. Impatiens biflora Walt. Fl. Car. 219. 1788. 



Impatiens Noli-tangere ji Michx. Fl. Bor. Am. 2 : 149. 1803. 



Impatiens aurea Muhl. Cat. 26. 1813. 



Impatiens maailata Muhl. Cat. 26. 1813. 



Impatiens fulva Nutt. Gen. 1 : 146. 1818. 



? Impatiens montana Raf. Atl. Jour. 153. 1832. 



Impatiens fulva albiflora Rand & Redf. Fl. Mt. Desert 88. 1894. 



Annual ; stem 1-1.5 m. high, glabrous, often tinged with red, branched ; petioles 1-5 

 cm. long ; leaf-blades oval or ovate, 2-10 cm. long, 1-6 cm. wide, green or purplish ; in- 

 florescence 3-6 cm. long, 3-6-flowered ; bracts subulate, about 3 mm. long; lateral sepals 

 light-green or purplish, obovate, short-acuminate, 5-6 mm. long; posterior sepal orange, 

 or rarely pink, usually copiously spotted with red or purple, sometimes wholly unspotted 

 (/. aurea Muhl.), elongate-helmet-shaped (*. e., more gibbous than in the preceding), 

 15-18 mm. long, about 12 mm. wide; spur abruptly reflexed, cylindric or more or less 

 clavate, sometimes retuse at the apex, about 1 cm. long ; petals of the same color as the 

 posterior sepal, the anterior one nearly orbicularly obcordate, 6-7 mm. long, fully 1 cm. 

 wide ; lateral petals obovate, 7-8 mm. long, half-united with the posterior ones, which are 

 rounded-spatulate, 12-18 mm. long ; pod clavate, acute, about 2 cm. long and 4 mm. thick. 



Type locality : Carolina. 



Distribution : River banks and open moist woods, from Newfoundland to Florida, Alabama, 

 Idaho (?) and the Mackenzie. 



Illustrations: Sweet, Brit. Fl. Card. 1: pi. 43 ; Engl. Bot. pi. 2794 ; Reichenb. Ic. Exot. 2: 

 pi. 101; A. Gray, Gen. Ill.pl. 152, 153 ; Britt. & Brown, 111. Fl. /. 23SS. 



3. Impatiens occidentalis Rydberg, sp. nov. 



Impatiens pallida Hook. Fl. Bor. Am. 1: 117, in part. 1830.— Howell, Fl. NW. Am. 1: 111. 



1897. Not /. pallida Nutt. 1818. 

 Impatiens Noli-tangere Trel. in A. Gray, Syn. Fl. N. Am. I 1 : 369. 1897. Not /. Noli-langere L,. 



1753. 



Annual ; stem light-green or straw-colored, about a meter high, glabrous ; petioles 1-5 

 cm. long ; leaf-blades oval, thin, light-green, 2-10 cm. long, 1-5 cm. wide, acute at the 

 apex, from acute to subcordate at the base, crenate-dentate with obliquely triangular, mucro- 

 nate teeth, more or less fimbriate-laciniate at the base, with gland-tipped teeth ; inflo- 

 rescence 3-4 cm. long, 3-5-flowered ; bractsminute, subulate ; lateral sepals obovate, abruptly 

 acuminate, about 6 mm. long; posterior sepal conic-trumpet-shaped, somewhat curved, 

 about 2 cm. long, pale-yellow, unspotted, or with minute dots, gradually tapering into the 

 abruptly recurved spur, which is 8-10 mm. long, cylindric ; petals pale-yellow, the anterior 

 ones broadly obovate, emarginate, 7 mm. long, fully 10 mm. wide ; lateral ones obovate, 

 7 mm. long, half united with the rounded obovate-spatulate oblique posterior ones, which 

 are nearly 2 cm. long and fully 1 cm. wide ; pod clavate, acute, about 18 mm. long and 4 

 mm. thick. 



Type collected along streams in damp woods, North Fork of Nooksack River, Washington, 

 1890, W. N. Suksdor/960 (herb. N. Y. Bot. Card.). 



Distribution : Damp places from Washington to Alaska. 



