96 NORTH AMERICAN FLORA [Volume 25 



mm. long, half united with the posterior ones, which are somewhat shorter, boot-shaped 

 and acute; pod clavate, acute, 15-18 mm. long, about 3 mm. wide. 



Type collected on Orizaba, Mexico, 1853, Fred. Muller (herb. Columbia Univ.). 



Distribution : Known only from the type locality. 



8. Impatiens turrialbana Donn. Smith, Bot. Gaz. 23 : 241. 1897. 



Annual ; stem glabrous, dichotomously branched, sulcate, leafy towards the ends of the 

 branches; leaves opposite ; petioles 1.5-3 cm. long; leaf-blades 5-7 cm. long, oblong-elliptic, 

 acute at both ends, remotely serrate above the middle or often entire, apiculate, paler 

 beneath ; inflorescence 2-4 cm. long, usually 2-flowered ; lateral sepals orbicular-ovate, apicu- 

 late, subcordate at the base, 8 mm. long, colored ; the posterior sepal 18 mm. long and broad, 

 purple, unspotted ; spur 8 mm. long, incurved, inflated at the apex ; anterior petal broadly 

 oblong, purple, the lateral and posterior ones united, forming an oblong-elliptic body with 

 2 oval or ovate lobes 4 mm. long ; capsule clavate, about 2 cm. long. 



Type locality : Crossing of the river Birris on the road ascending Volcan Turrialba, Prov. 

 Cartago, Costa Rica. 



Distribution : Known only from the type locality and vicinity. 



9. Impatiens Balsamina L,. Sp. PI. 938. 1753. ' 



Balsamina femina Gaertn. Fruct. 2 : 151. 1790. 

 Balsamina liortensts Desp. Diet. Sci. Nat. 3 : 485. 1805. 



Annual ; stem 3-10 dm. high, simple, more or less pubescent, especially on the younger 

 parts ; leaf-blades oblanceolate, acute, 5-15 cm. long, sharply serrate, sparingly hairy or 

 glabrous, gradually tapering into the short petioles, which bear prominent glands ; flowers 

 solitary or rarely geminate in the axils of the leaves ; pedicels 1-2 cm. long, puberulent ; 

 lateral sepals ovate, 2-3 mm. long ; posterior sepal rose or purple, broadly conic, 5-8 mm. 

 deep, 10-15 mm. wide, with an arcuate cylindric spur varying in length, usually thickened 

 at the very end ; anterior petal broadly obovate, about 8-10 mm. long ; lateral and pos- 

 terior petals obovate, 2-2.5 cm. long ; capsule ovoid, villous, 15-20 mm. long and about 8 

 mm. wide. 



Type locality : India. 



Distribution : Native of southern Asia ; cultivated and occasionally escaped in the United 

 States, from Pennsylvania south ; naturalized in the West Indies. 



Illustrations': Rumpf, Amb. 5: pi. 90; Rheede, Hort. Mai. 9: pi. 52. 



Excluded species 

 Impatiens Noli-tangere L. Sp. PI. 93S. 1753. This species has several times been 

 reported as introduced in America, but as far as known, erroneously so. The older botanists 

 confused /. pallida with /. Noli-tangere, and the specimens referred to the latter from the 

 Columbia River region belong to /. occidentalis. Lately it has been reported from Ottawa, 

 Ont., by Macoun, but a specimen distributed by him does not belong to /. Noli-tangere ; it 

 has opposite leaves and must belong to some Asiatic species, escaped from cultivation. No 

 specimens resembling it could be found in the North American herbaria examiued. 



1 Numerous synonyms are here omitted as they have no bearing on North American 

 botany. 



